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| author | bnewbold <bnewbold@robocracy.org> | 2014-08-27 17:36:11 -0400 |
|---|---|---|
| committer | bnewbold <bnewbold@robocracy.org> | 2014-08-27 17:42:22 -0400 |
| commit | 34b766c9d5f778762069938c71e052fa40455d1c (patch) | |
| tree | 3a2b77e636b222fecff6366218cf7845029afecf /docs/source/libmaple | |
| parent | 746d6fecf86572c9fe95dbbffdf541a8d3875dd0 (diff) | |
| parent | add7e54ccaf61859874527feda2b51ea172ce697 (diff) | |
| download | librambutan-34b766c9d5f778762069938c71e052fa40455d1c.tar.gz librambutan-34b766c9d5f778762069938c71e052fa40455d1c.zip | |
merge libmaple docs ("leaflabs-docs") into ./docs
In the past, libample documentation was forked out of this repository
because the documentation had increased in scope. For the librambutan,
and the rambutan project in general, we will try to keep documentation
closer to the source code, so the librambutan-specific documentation
should live here. Other sections of leaflabs-docs will be culled in a
following commit.
This merge attempts to maintain history by using a subtree strategy.
Followed directions at:
http://nuclearsquid.com/writings/subtree-merging-and-you/
Full history for files should be accessible using the "--follow" flag to
git log, eg:
git log --follow docs/source/adc.rst
It should be possible to pull patches from leaflabs-docs with:
git pull -s subtree leaflabs-docs master
... at least until the docs in this repository diverge significantly.
Diffstat (limited to 'docs/source/libmaple')
30 files changed, 5618 insertions, 0 deletions
diff --git a/docs/source/libmaple/api/adc.rst b/docs/source/libmaple/api/adc.rst new file mode 100644 index 0000000..2f06926 --- /dev/null +++ b/docs/source/libmaple/api/adc.rst @@ -0,0 +1,231 @@ +.. highlight:: c +.. _libmaple-adc: + +``<libmaple/adc.h>`` +==================== + +:ref:`Analog to Digital Conversion <adc>` (ADC) support. + +A common API for basic ADC functionality is available, but the +characteristics of the ADC peripherals vary slightly across +targets. To manage this, each target defines a small set of datatypes +expressing its capabilities (namely :ref:`adc_extsel_event +<adc-adc_extsel_event>`, :ref:`adc_smp_rate <adc-adc_smp_rate>`, and +:ref:`adc_prescaler <adc-adc_prescaler>`). + +.. contents:: Contents + :local: + :depth: 2 + +Devices +------- + +The individual ADC peripherals have the following device struct. + +.. doxygenstruct:: adc_dev + +The available ADC peripherals vary by target. The complete list is +``ADC1``, ``ADC2``, and ``ADC3``. + +.. doxygenvariable:: ADC1 +.. doxygenvariable:: ADC2 +.. doxygenvariable:: ADC3 + +Functions +--------- + +Activation and Deactivation +~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +``adc_enable_single_swstart()`` is simple, portable function, which +enables an ADC and sets it up for its basic usage: performing single +conversions using :ref:`adc_read() <adc-adc_read>`. + +.. _adc-adc_enable_single_swstart: +.. doxygenfunction:: adc_enable_single_swstart + +The precise software sequence used varies by target, so this is a good +function to use if your program needs to support multiple MCUs. By +default, Wirish calls ``adc_enable_single_swstart()`` on all available +ADCs at ``init()`` time, so Wirish users don't have to call this +function. + +There are several other lower-level routines used for activating and +deactivating ADCs: + +.. _adc-adc_init: +.. doxygenfunction:: adc_init +.. _adc-adc_enable: +.. doxygenfunction:: adc_enable +.. _adc-adc_disable: +.. doxygenfunction:: adc_disable +.. _adc-adc_disable_all: +.. doxygenfunction:: adc_disable_all + +ADC Conversion +~~~~~~~~~~~~~~ + +``adc_read()`` is a simple function which starts conversion on a +single ADC channel, blocks until it has completed, and returns the +converted result. Don't use the ADC device for any other purpose while +it's running. + +.. _adc-adc_read: +.. doxygenfunction:: adc_read + +To use ``adc_read()``, the device must be configured appropriately. +You can do this with :ref:`adc_enable_single_swstart() +<adc-adc_enable_single_swstart>`. + +Note that for an ADC device to perform conversion on a GPIO input +(which is the usual case; the notable exception being taking +temperature reading), the pin must be configured for analog +conversion. Do this with :ref:`adc_config_gpio() +<adc-adc_config_gpio>`. + +Other routines helpful for ADC conversion: + +.. _adc-adc_set_reg_seqlen: +.. doxygenfunction:: adc_set_reg_seqlen +.. _adc-adc_set_extsel: +.. doxygenfunction:: adc_set_extsel + +.. _adc-adc_extsel_event: + +The last of these, :ref:`adc_set_extsel() <adc-adc_set_extsel>`, takes +a target-dependent ``adc_extsel_event`` argument. + +STM32F1 Targets ++++++++++++++++ + +.. doxygenenum:: stm32f1::adc_extsel_event + +STM32F2 Targets ++++++++++++++++ + +.. doxygenenum:: stm32f2::adc_extsel_event + +ADC Clock Prescaler +~~~~~~~~~~~~~~~~~~~ + +``adc_set_prescaler()`` is available for setting the prescaler which +determines the common ADC clock rate. (Wirish sets a sensible default +for this, so Wirish users ordinarily don't need to call this +function.) + +.. warning:: Increasing the ADC clock rate does speed conversion time, + but the ADC peripherals have a maximum clock rate which must not be + exceeded. Make sure to configure your system and ADC clocks to + respect your device's maximum rate. + +.. _adc_adc_set_prescaler: +.. doxygenfunction:: adc_set_prescaler + +.. _adc-adc_prescaler: + +ADC prescaler values are target-dependent. + +STM32F1 Targets ++++++++++++++++ + +.. doxygenenum:: stm32f1::adc_prescaler + +STM32F2 Targets ++++++++++++++++ + +.. doxygenenum:: stm32f2::adc_prescaler + +.. _adc-adc_set_sample_rate: + +ADC Sample Time +~~~~~~~~~~~~~~~ + +You can control the sampling time (in ADC cycles) for an entire ADC +device using ``adc_set_sample_rate()`` [#fchansamp]_. This function +**only controls the sample rate**; the total conversion time is equal +to the sample time plus an additional number of ADC cycles. Consult +the reference manual for your chip for more details. + +.. warning:: Decreasing ADC sample time speeds conversion, but it also + decreases the maximum allowable impedance of the voltage source you + are measuring. If your voltage source has a high impedance + (e.g. you're measuring Vcc through a potentiometer), and your + sample time is too low, you will get inaccurate results. Consult + the datasheet for your target for more details. + +.. note:: Wirish sets a sensible default sample rate to allow for + high-impedance inputs at ``init()`` time, but Wirish users who know + what they're doing may want to call this function to speed up ADC + conversion. + +.. doxygenfunction:: adc_set_sample_rate + +.. _adc-adc_smp_rate: + +The ``adc_smp_rate`` argument to :ref:`adc_set_sample_rate() +<adc-adc_set_sample_rate>` is target-dependent. + +STM32F1 Targets ++++++++++++++++ + +.. doxygenenum:: stm32f1::adc_smp_rate + +STM32F2 Targets ++++++++++++++++ + +.. doxygenenum:: stm32f2::adc_smp_rate + +Miscellaneous +~~~~~~~~~~~~~ + +.. FIXME [0.0.13] why don't adc_config_gpio()'s docs show up? + +.. _adc-adc_foreach: +.. doxygenfunction:: adc_foreach + +.. _adc-adc_config_gpio: +.. doxygenfunction:: adc_config_gpio + +STM32F1 only +~~~~~~~~~~~~ + +The following routines are available only on STM32F1 targets. + +.. _adc-adc_set_exttrig: +.. doxygenfunction:: adc_set_exttrig + +``adc_calibrate()`` performs calibration necessary on STM32F1 before +using an ADC. Note that on STM32F1 targets, +:ref:`adc_enable_single_swstart() <adc-adc_enable_single_swstart>` +calls ``adc_calibrate()``, so there's no need to do it separately. + +.. _adc-adc_calibrate: +.. doxygenfunction:: adc_calibrate + +Register Maps +------------- + +Individual ADC peripherals have the following register map. The base +pointers are ``ADC1_BASE``, ``ADC2_BASE``, and ``ADC3_BASE``. + +.. _adc-adc_reg_map: +.. doxygenstruct:: adc_reg_map + +On **STM32F2 targets**, there is an additional common set of registers +shared by all ADC peripherals. Its base pointer is +``ADC_COMMON_BASE``. + +.. _adc-adc_common_reg_map: +.. doxygenstruct:: stm32f2::adc_common_reg_map + +Register Bit Definitions +------------------------ + +.. TODO [0.0.13] + +TODO + +.. rubric:: Footnotes + +.. [#fchansamp] Per-channel sample time configuration is possible, + but currently unsupported. diff --git a/docs/source/libmaple/api/bitband.rst b/docs/source/libmaple/api/bitband.rst new file mode 100644 index 0000000..768f678 --- /dev/null +++ b/docs/source/libmaple/api/bitband.rst @@ -0,0 +1,15 @@ +.. highlight:: c +.. _libmaple-bitband: + +``<libmaple/bitband.h>`` +======================== + +Bit-banding support. + +Functions +--------- + +.. doxygenfunction:: bb_sram_get_bit +.. doxygenfunction:: bb_sram_set_bit +.. doxygenfunction:: bb_peri_get_bit +.. doxygenfunction:: bb_peri_set_bit diff --git a/docs/source/libmaple/api/bkp.rst b/docs/source/libmaple/api/bkp.rst new file mode 100644 index 0000000..4f0115b --- /dev/null +++ b/docs/source/libmaple/api/bkp.rst @@ -0,0 +1,79 @@ +.. highlight:: c +.. _libmaple-bkp: + +``bkp.h`` +========= + +Backup register (BKP) suport. + +.. contents:: Contents + :local: + +Types +----- + +.. doxygenstruct:: bkp_dev +.. doxygenstruct:: bkp_reg_map + +Devices +------- + +.. doxygenvariable:: BKP + +Convenience Functions +--------------------- + +.. doxygenfunction:: bkp_init +.. doxygenfunction:: bkp_enable_writes +.. doxygenfunction:: bkp_disable_writes +.. doxygenfunction:: bkp_read +.. doxygenfunction:: bkp_write + +Register Map Base Pointers +-------------------------- + +.. doxygendefine:: BKP_BASE + +Register Bit Definitions +------------------------ + +Data Registers +~~~~~~~~~~~~~~ + +.. doxygendefine:: BKP_DR_D + +RTC Clock Calibration Register +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: BKP_RTCCR_ASOS_BIT +.. doxygendefine:: BKP_RTCCR_ASOE_BIT +.. doxygendefine:: BKP_RTCCR_CCO_BIT + +.. doxygendefine:: BKP_RTCCR_ASOS +.. doxygendefine:: BKP_RTCCR_ASOE +.. doxygendefine:: BKP_RTCCR_CCO +.. doxygendefine:: BKP_RTCCR_CAL + +Backup control register +~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: BKP_CR_TPAL_BIT +.. doxygendefine:: BKP_CR_TPE_BIT + +.. doxygendefine:: BKP_CR_TPAL +.. doxygendefine:: BKP_CR_TPE + +Backup control/status register +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: BKP_CSR_TIF_BIT +.. doxygendefine:: BKP_CSR_TEF_BIT +.. doxygendefine:: BKP_CSR_TPIE_BIT +.. doxygendefine:: BKP_CSR_CTI_BIT +.. doxygendefine:: BKP_CSR_CTE_BIT + +.. doxygendefine:: BKP_CSR_TIF +.. doxygendefine:: BKP_CSR_TEF +.. doxygendefine:: BKP_CSR_TPIE +.. doxygendefine:: BKP_CSR_CTI +.. doxygendefine:: BKP_CSR_CTE diff --git a/docs/source/libmaple/api/dac.rst b/docs/source/libmaple/api/dac.rst new file mode 100644 index 0000000..55c8faf --- /dev/null +++ b/docs/source/libmaple/api/dac.rst @@ -0,0 +1,123 @@ +.. highlight:: c +.. _libmaple-dac: + +``dac.h`` +========= + +Digital to Analog Conversion (DAC) support. + +.. contents:: Contents + :local: + +Types +----- + +.. doxygenstruct:: dac_dev +.. doxygenstruct:: dac_reg_map + +Devices +------- + +.. doxygenvariable:: DAC + +Functions +--------- + +.. doxygenfunction:: dac_init +.. doxygenfunction:: dac_write_channel +.. doxygenfunction:: dac_enable_channel +.. doxygenfunction:: dac_disable_channel + +Register Map Base Pointers +-------------------------- + +.. doxygendefine:: DAC_BASE + +Register Bit Definitions +------------------------ + +Control register +~~~~~~~~~~~~~~~~ + +**Channel 1**: + +.. doxygendefine:: DAC_CR_EN1 +.. doxygendefine:: DAC_CR_BOFF1 +.. doxygendefine:: DAC_CR_TEN1 +.. doxygendefine:: DAC_CR_TSEL1 +.. doxygendefine:: DAC_CR_WAVE1 +.. doxygendefine:: DAC_CR_MAMP1 +.. doxygendefine:: DAC_CR_DMAEN1 + +**Channel 2**: + +.. doxygendefine:: DAC_CR_EN2 +.. doxygendefine:: DAC_CR_BOFF2 +.. doxygendefine:: DAC_CR_TEN2 +.. doxygendefine:: DAC_CR_TSEL2 +.. doxygendefine:: DAC_CR_WAVE2 +.. doxygendefine:: DAC_CR_MAMP2 +.. doxygendefine:: DAC_CR_DMAEN2 + +Software trigger register +~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: DAC_SWTRIGR_SWTRIG1 +.. doxygendefine:: DAC_SWTRIGR_SWTRIG2 + +Channel 1 12-bit right-aligned data holding register +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: DAC_DHR12R1_DACC1DHR + +Channel 1 12-bit left-aligned data holding register +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: DAC_DHR12L1_DACC1DHR + +Channel 1 8-bit left-aligned data holding register +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: DAC_DHR8R1_DACC1DHR + +Channel 2 12-bit right-aligned data holding register +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: DAC_DHR12R2_DACC2DHR + +Channel 2 12-bit left-aligned data holding register +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: DAC_DHR12L2_DACC2DHR + +Channel 2 8-bit left-aligned data holding register +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: DAC_DHR8R2_DACC2DHR + +Dual DAC 12-bit right-aligned data holding register +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: DAC_DHR12RD_DACC1DHR +.. doxygendefine:: DAC_DHR12RD_DACC2DHR + +Dual DAC 12-bit left-aligned data holding register +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: DAC_DHR12LD_DACC1DHR +.. doxygendefine:: DAC_DHR12LD_DACC2DHR + +Dual DAC 8-bit left-aligned data holding register +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: DAC_DHR8RD_DACC1DHR +.. doxygendefine:: DAC_DHR8RD_DACC2DHR + +Channel 1 data output register +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: DAC_DOR1_DACC1DOR + +Channel 1 data output register +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.. doxygendefine:: DAC_DOR2_DACC2DOR diff --git a/docs/source/libmaple/api/delay.rst b/docs/source/libmaple/api/delay.rst new file mode 100644 index 0000000..d11496b --- /dev/null +++ b/docs/source/libmaple/api/delay.rst @@ -0,0 +1,11 @@ +.. highlight:: c +.. _libmaple-delay: + +``<libmaple/delay.h>`` +====================== + +Provides a simple busy-loop delay function. Note that this function +does not account for time spent in interrupts, so actual delay times +may vary depending on your application. + +.. doxygenfunction:: delay_us diff --git a/docs/source/libmaple/api/dma.rst b/docs/source/libmaple/api/dma.rst new file mode 100644 index 0000000..a9893e2 --- /dev/null +++ b/docs/source/libmaple/api/dma.rst @@ -0,0 +1,215 @@ +.. highlight:: c +.. _libmaple-dma: + +``dma.h`` +========= + +Direct Memory Access (DMA) support. + +.. contents:: Contents + :local: + +Types +----- + +.. doxygenstruct:: dma_reg_map +.. doxygenstruct:: dma_dev +.. doxygenstruct:: dma_handler_config +.. doxygenenum:: dma_mode_flags +.. doxygenenum:: dma_xfer_size +.. doxygenenum:: dma_channel +.. doxygenenum:: dma_priority +.. doxygenenum:: dma_irq_cause +.. doxygenstruct:: dma_channel_reg_map + +Devices +------- + +.. doxygenvariable:: DMA1 +.. doxygenvariable:: DMA2 + +Functions +--------- + +.. doxygenfunction:: dma_init +.. doxygenfunction:: dma_setup_transfer +.. doxygenfunction:: dma_set_num_transfers +.. doxygenfunction:: dma_set_priority +.. doxygenfunction:: dma_attach_interrupt +.. doxygenfunction:: dma_detach_interrupt +.. doxygenfunction:: dma_get_irq_cause +.. doxygenfunction:: dma_enable +.. doxygenfunction:: dma_disable +.. doxygenfunction:: dma_set_mem_addr +.. doxygenfunction:: dma_set_per_addr +.. doxygenfunction:: dma_channel_regs +.. doxygenfunction:: dma_is_channel_enabled +.. doxygenfunction:: dma_get_isr_bits +.. doxygenfunction:: dma_clear_isr_bits + +Register Map Base Pointers +-------------------------- + +.. doxygendefine:: DMA1_BASE +.. doxygendefine:: DMA2_BASE + +Register Bit Definitions +------------------------ + +Interrupt status register +~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: DMA_ISR_TEIF7_BIT +.. doxygendefine:: DMA_ISR_HTIF7_BIT +.. doxygendefine:: DMA_ISR_TCIF7_BIT +.. doxygendefine:: DMA_ISR_GIF7_BIT +.. doxygendefine:: DMA_ISR_TEIF6_BIT +.. doxygendefine:: DMA_ISR_HTIF6_BIT +.. doxygendefine:: DMA_ISR_TCIF6_BIT +.. doxygendefine:: DMA_ISR_GIF6_BIT +.. doxygendefine:: DMA_ISR_TEIF5_BIT +.. doxygendefine:: DMA_ISR_HTIF5_BIT +.. doxygendefine:: DMA_ISR_TCIF5_BIT +.. doxygendefine:: DMA_ISR_GIF5_BIT +.. doxygendefine:: DMA_ISR_TEIF4_BIT +.. doxygendefine:: DMA_ISR_HTIF4_BIT +.. doxygendefine:: DMA_ISR_TCIF4_BIT +.. doxygendefine:: DMA_ISR_GIF4_BIT +.. doxygendefine:: DMA_ISR_TEIF3_BIT +.. doxygendefine:: DMA_ISR_HTIF3_BIT +.. doxygendefine:: DMA_ISR_TCIF3_BIT +.. doxygendefine:: DMA_ISR_GIF3_BIT +.. doxygendefine:: DMA_ISR_TEIF2_BIT +.. doxygendefine:: DMA_ISR_HTIF2_BIT +.. doxygendefine:: DMA_ISR_TCIF2_BIT +.. doxygendefine:: DMA_ISR_GIF2_BIT +.. doxygendefine:: DMA_ISR_TEIF1_BIT +.. doxygendefine:: DMA_ISR_HTIF1_BIT +.. doxygendefine:: DMA_ISR_TCIF1_BIT +.. doxygendefine:: DMA_ISR_GIF1_BIT + +.. doxygendefine:: DMA_ISR_TEIF7 +.. doxygendefine:: DMA_ISR_HTIF7 +.. doxygendefine:: DMA_ISR_TCIF7 +.. doxygendefine:: DMA_ISR_GIF7 +.. doxygendefine:: DMA_ISR_TEIF6 +.. doxygendefine:: DMA_ISR_HTIF6 +.. doxygendefine:: DMA_ISR_TCIF6 +.. doxygendefine:: DMA_ISR_GIF6 +.. doxygendefine:: DMA_ISR_TEIF5 +.. doxygendefine:: DMA_ISR_HTIF5 +.. doxygendefine:: DMA_ISR_TCIF5 +.. doxygendefine:: DMA_ISR_GIF5 +.. doxygendefine:: DMA_ISR_TEIF4 +.. doxygendefine:: DMA_ISR_HTIF4 +.. doxygendefine:: DMA_ISR_TCIF4 +.. doxygendefine:: DMA_ISR_GIF4 +.. doxygendefine:: DMA_ISR_TEIF3 +.. doxygendefine:: DMA_ISR_HTIF3 +.. doxygendefine:: DMA_ISR_TCIF3 +.. doxygendefine:: DMA_ISR_GIF3 +.. doxygendefine:: DMA_ISR_TEIF2 +.. doxygendefine:: DMA_ISR_HTIF2 +.. doxygendefine:: DMA_ISR_TCIF2 +.. doxygendefine:: DMA_ISR_GIF2 +.. doxygendefine:: DMA_ISR_TEIF1 +.. doxygendefine:: DMA_ISR_HTIF1 +.. doxygendefine:: DMA_ISR_TCIF1 +.. doxygendefine:: DMA_ISR_GIF1 + +Interrupt flag clear register +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: DMA_IFCR_CTEIF7_BIT +.. doxygendefine:: DMA_IFCR_CHTIF7_BIT +.. doxygendefine:: DMA_IFCR_CTCIF7_BIT +.. doxygendefine:: DMA_IFCR_CGIF7_BIT +.. doxygendefine:: DMA_IFCR_CTEIF6_BIT +.. doxygendefine:: DMA_IFCR_CHTIF6_BIT +.. doxygendefine:: DMA_IFCR_CTCIF6_BIT +.. doxygendefine:: DMA_IFCR_CGIF6_BIT +.. doxygendefine:: DMA_IFCR_CTEIF5_BIT +.. doxygendefine:: DMA_IFCR_CHTIF5_BIT +.. doxygendefine:: DMA_IFCR_CTCIF5_BIT +.. doxygendefine:: DMA_IFCR_CGIF5_BIT +.. doxygendefine:: DMA_IFCR_CTEIF4_BIT +.. doxygendefine:: DMA_IFCR_CHTIF4_BIT +.. doxygendefine:: DMA_IFCR_CTCIF4_BIT +.. doxygendefine:: DMA_IFCR_CGIF4_BIT +.. doxygendefine:: DMA_IFCR_CTEIF3_BIT +.. doxygendefine:: DMA_IFCR_CHTIF3_BIT +.. doxygendefine:: DMA_IFCR_CTCIF3_BIT +.. doxygendefine:: DMA_IFCR_CGIF3_BIT +.. doxygendefine:: DMA_IFCR_CTEIF2_BIT +.. doxygendefine:: DMA_IFCR_CHTIF2_BIT +.. doxygendefine:: DMA_IFCR_CTCIF2_BIT +.. doxygendefine:: DMA_IFCR_CGIF2_BIT +.. doxygendefine:: DMA_IFCR_CTEIF1_BIT +.. doxygendefine:: DMA_IFCR_CHTIF1_BIT +.. doxygendefine:: DMA_IFCR_CTCIF1_BIT +.. doxygendefine:: DMA_IFCR_CGIF1_BIT + +.. doxygendefine:: DMA_IFCR_CTEIF7 +.. doxygendefine:: DMA_IFCR_CHTIF7 +.. doxygendefine:: DMA_IFCR_CTCIF7 +.. doxygendefine:: DMA_IFCR_CGIF7 +.. doxygendefine:: DMA_IFCR_CTEIF6 +.. doxygendefine:: DMA_IFCR_CHTIF6 +.. doxygendefine:: DMA_IFCR_CTCIF6 +.. doxygendefine:: DMA_IFCR_CGIF6 +.. doxygendefine:: DMA_IFCR_CTEIF5 +.. doxygendefine:: DMA_IFCR_CHTIF5 +.. doxygendefine:: DMA_IFCR_CTCIF5 +.. doxygendefine:: DMA_IFCR_CGIF5 +.. doxygendefine:: DMA_IFCR_CTEIF4 +.. doxygendefine:: DMA_IFCR_CHTIF4 +.. doxygendefine:: DMA_IFCR_CTCIF4 +.. doxygendefine:: DMA_IFCR_CGIF4 +.. doxygendefine:: DMA_IFCR_CTEIF3 +.. doxygendefine:: DMA_IFCR_CHTIF3 +.. doxygendefine:: DMA_IFCR_CTCIF3 +.. doxygendefine:: DMA_IFCR_CGIF3 +.. doxygendefine:: DMA_IFCR_CTEIF2 +.. doxygendefine:: DMA_IFCR_CHTIF2 +.. doxygendefine:: DMA_IFCR_CTCIF2 +.. doxygendefine:: DMA_IFCR_CGIF2 +.. doxygendefine:: DMA_IFCR_CTEIF1 +.. doxygendefine:: DMA_IFCR_CHTIF1 +.. doxygendefine:: DMA_IFCR_CTCIF1 +.. doxygendefine:: DMA_IFCR_CGIF1 + +Channel configuration register +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: DMA_CCR_MEM2MEM_BIT +.. doxygendefine:: DMA_CCR_MINC_BIT +.. doxygendefine:: DMA_CCR_PINC_BIT +.. doxygendefine:: DMA_CCR_CIRC_BIT +.. doxygendefine:: DMA_CCR_DIR_BIT +.. doxygendefine:: DMA_CCR_TEIE_BIT +.. doxygendefine:: DMA_CCR_HTIE_BIT +.. doxygendefine:: DMA_CCR_TCIE_BIT +.. doxygendefine:: DMA_CCR_EN_BIT + +.. doxygendefine:: DMA_CCR_MEM2MEM +.. doxygendefine:: DMA_CCR_PL +.. doxygendefine:: DMA_CCR_PL_LOW +.. doxygendefine:: DMA_CCR_PL_MEDIUM +.. doxygendefine:: DMA_CCR_PL_HIGH +.. doxygendefine:: DMA_CCR_PL_VERY_HIGH +.. doxygendefine:: DMA_CCR_MSIZE +.. doxygendefine:: DMA_CCR_MSIZE_8BITS +.. doxygendefine:: DMA_CCR_MSIZE_16BITS +.. doxygendefine:: DMA_CCR_MSIZE_32BITS +.. doxygendefine:: DMA_CCR_PSIZE +.. doxygendefine:: DMA_CCR_PSIZE_8BITS +.. doxygendefine:: DMA_CCR_PSIZE_16BITS +.. doxygendefine:: DMA_CCR_PSIZE_32BITS +.. doxygendefine:: DMA_CCR_MINC +.. doxygendefine:: DMA_CCR_PINC +.. doxygendefine:: DMA_CCR_CIRC +.. doxygendefine:: DMA_CCR_DIR +.. doxygendefine:: DMA_CCR_TEIE +.. doxygendefine:: DMA_CCR_HTIE +.. doxygendefine:: DMA_CCR_TCIE +.. doxygendefine:: DMA_CCR_EN diff --git a/docs/source/libmaple/api/exti.rst b/docs/source/libmaple/api/exti.rst new file mode 100644 index 0000000..1038fbf --- /dev/null +++ b/docs/source/libmaple/api/exti.rst @@ -0,0 +1,37 @@ +.. highlight:: c +.. _libmaple-exti: + +``exti.h`` +========== + +:ref:`External interrupt <external-interrupts>` support. + +.. contents:: Contents + :local: + +Types +----- + +.. doxygenstruct:: exti_reg_map +.. doxygenenum:: exti_trigger_mode + +Devices +------- + +None at this time. + +Functions +--------- + +.. doxygenfunction:: exti_attach_interrupt +.. doxygenfunction:: exti_detach_interrupt + +Register Map Base Pointers +-------------------------- + +.. doxygendefine:: EXTI_BASE + +Register Bit Definitions +------------------------ + +None at this time. diff --git a/docs/source/libmaple/api/flash.rst b/docs/source/libmaple/api/flash.rst new file mode 100644 index 0000000..52ff4d2 --- /dev/null +++ b/docs/source/libmaple/api/flash.rst @@ -0,0 +1,249 @@ +.. highlight:: c +.. _libmaple-flash: + +``<libmaple/flash.h>`` +====================== + +Flash memory support. + +The built-in Flash on different STM32 MCUs varies in terms of its +eraseable page/sector size and read/write protections. There isn't +currently much support for dealing with this. This header is mostly +useful for its functions that control Flash features which affect +system performance, like wait states and prefetch buffers. + +.. contents:: Contents + :local: + +Devices +------- + +None at this time. + +Functions +--------- + +The following functions can be used to portably manipulate Flash memory. + +.. doxygenfunction:: flash_set_latency +.. doxygenfunction:: flash_enable_features +.. doxygenfunction:: flash_enable_prefetch + +Register Maps +------------- + +Register maps vary by target. The base pointer is always ``FLASH_BASE``. + +Base Pointer +~~~~~~~~~~~~ + +.. doxygendefine:: FLASH_BASE + +STM32F1 targets +~~~~~~~~~~~~~~~ + +.. doxygenstruct:: stm32f1::flash_reg_map + +STM32F2 targets +~~~~~~~~~~~~~~~ + +.. doxygenstruct:: stm32f2::flash_reg_map + +Register Bit Definitions +------------------------ + +These are given as source code. Available register bit definitions +vary by target. + +STM32F1 Targets +~~~~~~~~~~~~~~~ + +:: + + /* Access control register */ + + #define FLASH_ACR_PRFTBS_BIT 5 + #define FLASH_ACR_PRFTBE_BIT 4 + #define FLASH_ACR_HLFCYA_BIT 3 + + #define FLASH_ACR_PRFTBS (1U << FLASH_ACR_PRFTBS_BIT) + #define FLASH_ACR_PRFTBE (1U << FLASH_ACR_PRFTBE_BIT) + #define FLASH_ACR_HLFCYA (1U << FLASH_ACR_HLFCYA_BIT) + #define FLASH_ACR_LATENCY 0x7 + + /* Status register */ + + #define FLASH_SR_EOP_BIT 5 + #define FLASH_SR_WRPRTERR_BIT 4 + #define FLASH_SR_PGERR_BIT 2 + #define FLASH_SR_BSY_BIT 0 + + #define FLASH_SR_EOP (1U << FLASH_SR_EOP_BIT) + #define FLASH_SR_WRPRTERR (1U << FLASH_SR_WRPRTERR_BIT) + #define FLASH_SR_PGERR (1U << FLASH_SR_PGERR_BIT) + #define FLASH_SR_BSY (1U << FLASH_SR_BSY_BIT) + + /* Control register */ + + #define FLASH_CR_EOPIE_BIT 12 + #define FLASH_CR_ERRIE_BIT 10 + #define FLASH_CR_OPTWRE_BIT 9 + #define FLASH_CR_LOCK_BIT 7 + #define FLASH_CR_STRT_BIT 6 + #define FLASH_CR_OPTER_BIT 5 + #define FLASH_CR_OPTPG_BIT 4 + #define FLASH_CR_MER_BIT 2 + #define FLASH_CR_PER_BIT 1 + #define FLASH_CR_PG_BIT 0 + + #define FLASH_CR_EOPIE (1U << FLASH_CR_EOPIE_BIT) + #define FLASH_CR_ERRIE (1U << FLASH_CR_ERRIE_BIT) + #define FLASH_CR_OPTWRE (1U << FLASH_CR_OPTWRE_BIT) + #define FLASH_CR_LOCK (1U << FLASH_CR_LOCK_BIT) + #define FLASH_CR_STRT (1U << FLASH_CR_STRT_BIT) + #define FLASH_CR_OPTER (1U << FLASH_CR_OPTER_BIT) + #define FLASH_CR_OPTPG (1U << FLASH_CR_OPTPG_BIT) + #define FLASH_CR_MER (1U << FLASH_CR_MER_BIT) + #define FLASH_CR_PER (1U << FLASH_CR_PER_BIT) + #define FLASH_CR_PG (1U << FLASH_CR_PG_BIT) + + /* Option byte register */ + + #define FLASH_OBR_nRST_STDBY_BIT 4 + #define FLASH_OBR_nRST_STOP_BIT 3 + #define FLASH_OBR_WDG_SW_BIT 2 + #define FLASH_OBR_RDPRT_BIT 1 + #define FLASH_OBR_OPTERR_BIT 0 + + #define FLASH_OBR_DATA1 (0xFF << 18) + #define FLASH_OBR_DATA0 (0xFF << 10) + #define FLASH_OBR_USER 0x3FF + #define FLASH_OBR_nRST_STDBY (1U << FLASH_OBR_nRST_STDBY_BIT) + #define FLASH_OBR_nRST_STOP (1U << FLASH_OBR_nRST_STOP_BIT) + #define FLASH_OBR_WDG_SW (1U << FLASH_OBR_WDG_SW_BIT) + #define FLASH_OBR_RDPRT (1U << FLASH_OBR_RDPRT_BIT) + #define FLASH_OBR_OPTERR (1U << FLASH_OBR_OPTERR_BIT) + +STM32F2 Targets +~~~~~~~~~~~~~~~ + +:: + + /* Access control register */ + + #define FLASH_ACR_DCRST_BIT 12 + #define FLASH_ACR_ICRST_BIT 11 + #define FLASH_ACR_DCEN_BIT 10 + #define FLASH_ACR_ICEN_BIT 9 + #define FLASH_ACR_PRFTEN_BIT 8 + + #define FLASH_ACR_DCRST (1U << FLASH_ACR_DCRST_BIT) + #define FLASH_ACR_ICRST (1U << FLASH_ACR_ICRST_BIT) + #define FLASH_ACR_DCEN (1U << FLASH_ACR_DCEN_BIT) + #define FLASH_ACR_ICEN (1U << FLASH_ACR_ICEN_BIT) + #define FLASH_ACR_PRFTEN (1U << FLASH_ACR_PRFTEN_BIT) + #define FLASH_ACR_LATENCY 0x7 + #define FLASH_ACR_LATENCY_0WS 0x0 + #define FLASH_ACR_LATENCY_1WS 0x1 + #define FLASH_ACR_LATENCY_2WS 0x2 + #define FLASH_ACR_LATENCY_3WS 0x3 + #define FLASH_ACR_LATENCY_4WS 0x4 + #define FLASH_ACR_LATENCY_5WS 0x5 + #define FLASH_ACR_LATENCY_6WS 0x6 + #define FLASH_ACR_LATENCY_7WS 0x7 + + /* Key register */ + + #define FLASH_KEYR_KEY1 0x45670123 + #define FLASH_KEYR_KEY2 0xCDEF89AB + + /* Option key register */ + + #define FLASH_OPTKEYR_OPTKEY1 0x08192A3B + #define FLASH_OPTKEYR_OPTKEY2 0x4C5D6E7F + + /* Status register */ + + #define FLASH_SR_BSY_BIT 16 + #define FLASH_SR_PGSERR_BIT 7 + #define FLASH_SR_PGPERR_BIT 6 + #define FLASH_SR_PGAERR_BIT 5 + #define FLASH_SR_WRPERR_BIT 4 + #define FLASH_SR_OPERR_BIT 1 + #define FLASH_SR_EOP_BIT 0 + + #define FLASH_SR_BSY (1U << FLASH_SR_BSY_BIT) + #define FLASH_SR_PGSERR (1U << FLASH_SR_PGSERR_BIT) + #define FLASH_SR_PGPERR (1U << FLASH_SR_PGPERR_BIT) + #define FLASH_SR_PGAERR (1U << FLASH_SR_PGAERR_BIT) + #define FLASH_SR_WRPERR (1U << FLASH_SR_WRPERR_BIT) + #define FLASH_SR_OPERR (1U << FLASH_SR_OPERR_BIT) + #define FLASH_SR_EOP (1U << FLASH_SR_EOP_BIT) + + /* Control register */ + + #define FLASH_CR_LOCK_BIT 31 + #define FLASH_CR_ERRIE_BIT 25 + #define FLASH_CR_EOPIE_BIT 24 + #define FLASH_CR_STRT_BIT 16 + #define FLASH_CR_MER_BIT 2 + #define FLASH_CR_SER_BIT 1 + #define FLASH_CR_PG_BIT 0 + + #define FLASH_CR_LOCK (1U << FLASH_CR_LOCK_BIT) + #define FLASH_CR_ERRIE (1U << FLASH_CR_ERRIE_BIT) + #define FLASH_CR_EOPIE (1U << FLASH_CR_EOPIE_BIT) + #define FLASH_CR_STRT (1U << FLASH_CR_STRT_BIT) + + #define FLASH_CR_PSIZE (0x3 << 8) + #define FLASH_CR_PSIZE_MUL8 (0x0 << 8) + #define FLASH_CR_PSIZE_MUL16 (0x1 << 8) + #define FLASH_CR_PSIZE_MUL32 (0x2 << 8) + #define FLASH_CR_PSIZE_MUL64 (0x3 << 8) + + #define FLASH_CR_SNB (0xF << 3) + #define FLASH_CR_SNB_0 (0x0 << 3) + #define FLASH_CR_SNB_1 (0x1 << 3) + #define FLASH_CR_SNB_2 (0x2 << 3) + #define FLASH_CR_SNB_3 (0x3 << 3) + #define FLASH_CR_SNB_4 (0x4 << 3) + #define FLASH_CR_SNB_5 (0x5 << 3) + #define FLASH_CR_SNB_6 (0x6 << 3) + #define FLASH_CR_SNB_7 (0x7 << 3) + #define FLASH_CR_SNB_8 (0x8 << 3) + #define FLASH_CR_SNB_9 (0x9 << 3) + #define FLASH_CR_SNB_10 (0xA << 3) + #define FLASH_CR_SNB_11 (0xB << 3) + + #define FLASH_CR_MER (1U << FLASH_CR_MER_BIT) + #define FLASH_CR_SER (1U << FLASH_CR_SER_BIT) + #define FLASH_CR_PG (1U << FLASH_CR_PG_BIT) + + /* Option control register */ + + #define FLASH_OPTCR_NRST_STDBY_BIT 7 + #define FLASH_OPTCR_NRST_STOP_BIT 6 + #define FLASH_OPTCR_WDG_SW_BIT 5 + #define FLASH_OPTCR_OPTSTRT_BIT 1 + #define FLASH_OPTCR_OPTLOCK_BIT 0 + + #define FLASH_OPTCR_NWRP (0x3FF << 16) + + /* Excluded: The many level 1 values */ + #define FLASH_OPTCR_RDP (0xFF << 8) + #define FLASH_OPTCR_RDP_LEVEL0 (0xAA << 8) + #define FLASH_OPTCR_RDP_LEVEL2 (0xCC << 8) + + #define FLASH_OPTCR_USER (0x7 << 5) + #define FLASH_OPTCR_nRST_STDBY (1U << FLASH_OPTCR_nRST_STDBY_BIT) + #define FLASH_OPTCR_nRST_STOP (1U << FLASH_OPTCR_nRST_STOP_BIT) + #define FLASH_OPTCR_WDG_SW (1U << FLASH_OPTCR_WDG_SW_BIT) + + #define FLASH_OPTCR_BOR_LEV (0x3 << 2) + #define FLASH_OPTCR_BOR_LEVEL3 (0x0 << 2) + #define FLASH_OPTCR_BOR_LEVEL2 (0x1 << 2) + #define FLASH_OPTCR_BOR_LEVEL1 (0x2 << 2) + #define FLASH_OPTCR_BOR_OFF (0x3 << 2) + + #define FLASH_OPTCR_OPTSTRT (1U << FLASH_OPTCR_OPTSTRT_BIT) + #define FLASH_OPTCR_OPTLOCK (1U << FLASH_OPTCR_OPTLOCK_BIT) diff --git a/docs/source/libmaple/api/fsmc.rst b/docs/source/libmaple/api/fsmc.rst new file mode 100644 index 0000000..e2bf87a --- /dev/null +++ b/docs/source/libmaple/api/fsmc.rst @@ -0,0 +1,235 @@ +.. highlight:: c +.. _libmaple-fsmc: + +``<libmaple/fsmc.h>`` +===================== + +Flexible Static Memory Controller (FSMC) support. The FSMC peripheral +is only available on some targets. Including this header on a target +without an FSMC will cause a compilation error. Check your target's +documentation to determine if it's available. You can also use +:ref:`STM32_HAVE_FSMC <libmaple-stm32-STM32_HAVE_FSMC>` from +``<libmaple/stm32.h>`` to determine whether your target has an FSMC at +build time. + +All functionality documented here is portable. + +.. contents:: Contents + :local: + +Usage Note +---------- + +FSMC support is fairly limited at this time. Current Leaflabs boards +only use the FSMC to interface with external SRAM chips, so that's +what there's the most support for (:ref:`patches welcome! +<libmaple-contributing>`). Even for use with SRAM, you will still need +to program some registers directly. + +To use the FSMC with an SRAM chip, first call +:ref:`fsmc_sram_init_gpios() <libmaple-fsmc-fsmc_sram_init_gpios>` to +configure its data, address, and control lines. Then, turn on the +FSMC clock (by calling :ref:`rcc_clk_enable(RCC_FSMC) +<libmaple-rcc-rcc_clk_enable>`). You can then configure the relevant +:ref:`fsmc_nor_psram_reg_map <libmaple-fsmc-fsmc_nor_psram_reg_map>` +``BCR`` register yourself for the SRAM chip you are using. + +You can additionally use :ref:`fsmc_nor_psram_set_datast() +<libmaple-fsmc-fsmc_nor_psram_set_datast>` and +:ref:`fsmc_nor_psram_set_datast() <libmaple-fsmc-fsmc_nor_psram_set_datast>` +to control read/write timing. + +Devices +------- + +None at this time. + +Functions +--------- + +.. _libmaple-fsmc-fsmc_sram_init_gpios: +.. doxygenfunction:: fsmc_sram_init_gpios +.. _libmaple-fsmc-fsmc_nor_psram_set_datast: +.. doxygenfunction:: fsmc_nor_psram_set_datast +.. _libmaple-fsmc-fsmc_nor_psram_set_addset: +.. doxygenfunction:: fsmc_nor_psram_set_addset + +Register Maps +------------- + +The general purpose register map type is ``fsmc_reg_map``; its base +pointer is ``FSMC_BASE``. The ``fsmc_nor_psram_reg_map`` type is for +use configuring the registers for an individual NOR/PSRAM region +(``FSMC_BCRx``, ``FSMC_BTRx``, and ``FSMC_BWTRx``); the relevant base +pointers are ``FSMC_NOR_PSRAM_REGION1`` through +``FSMC_NOR_PSRAM_REGION4``. + +.. doxygendefine:: FSMC_BASE + +.. doxygendefine:: FSMC_NOR_PSRAM1_BASE +.. doxygendefine:: FSMC_NOR_PSRAM2_BASE +.. doxygendefine:: FSMC_NOR_PSRAM3_BASE +.. doxygendefine:: FSMC_NOR_PSRAM4_BASE + +.. doxygenstruct:: fsmc_reg_map +.. _libmaple-fsmc-fsmc_nor_psram_reg_map: +.. doxygenstruct:: fsmc_nor_psram_reg_map + +Memory Bank Boundary Addresses +------------------------------ + +Reading and writing data on an external memory chip using FSMC is done +by reading and writing from addresses in special memory-mapped +sections of the address space called *memory banks*. + +This is convenient, since it implies that the usual load and store +instructions used for I/O with the internal SRAM are also used to +perform bus transactions with the external memory chip. (Which means +you can use ``memcpy()`` etc. on external memory.) + +Pointers to the memory banks' base addresses are given by the +following macros. + +.. doxygendefine:: FSMC_BANK1 +.. doxygendefine:: FSMC_BANK2 +.. doxygendefine:: FSMC_BANK3 +.. doxygendefine:: FSMC_BANK4 + +.. doxygendefine:: FSMC_NOR_PSRAM_REGION1 +.. doxygendefine:: FSMC_NOR_PSRAM_REGION2 +.. doxygendefine:: FSMC_NOR_PSRAM_REGION3 +.. doxygendefine:: FSMC_NOR_PSRAM_REGION4 + +Register Bit Definitions +------------------------ + +These are given as source code. + +:: + + /* NOR/PSRAM chip-select control registers */ + + #define FSMC_BCR_CBURSTRW_BIT 19 + #define FSMC_BCR_ASYNCWAIT_BIT 15 + #define FSMC_BCR_EXTMOD_BIT 14 + #define FSMC_BCR_WAITEN_BIT 13 + #define FSMC_BCR_WREN_BIT 12 + #define FSMC_BCR_WAITCFG_BIT 11 + #define FSMC_BCR_WRAPMOD_BIT 10 + #define FSMC_BCR_WAITPOL_BIT 9 + #define FSMC_BCR_BURSTEN_BIT 8 + #define FSMC_BCR_FACCEN_BIT 6 + #define FSMC_BCR_MUXEN_BIT 1 + #define FSMC_BCR_MBKEN_BIT 0 + + #define FSMC_BCR_CBURSTRW (1U << FSMC_BCR_CBURSTRW_BIT) + #define FSMC_BCR_ASYNCWAIT (1U << FSMC_BCR_ASYNCWAIT_BIT) + #define FSMC_BCR_EXTMOD (1U << FSMC_BCR_EXTMOD_BIT) + #define FSMC_BCR_WAITEN (1U << FSMC_BCR_WAITEN_BIT) + #define FSMC_BCR_WREN (1U << FSMC_BCR_WREN_BIT) + #define FSMC_BCR_WAITCFG (1U << FSMC_BCR_WAITCFG_BIT) + #define FSMC_BCR_WRAPMOD (1U << FSMC_BCR_WRAPMOD_BIT) + #define FSMC_BCR_WAITPOL (1U << FSMC_BCR_WAITPOL_BIT) + #define FSMC_BCR_BURSTEN (1U << FSMC_BCR_BURSTEN_BIT) + #define FSMC_BCR_FACCEN (1U << FSMC_BCR_FACCEN_BIT) + #define FSMC_BCR_MWID (0x3 << 4) + #define FSMC_BCR_MWID_8BITS (0x0 << 4) + #define FSMC_BCR_MWID_16BITS (0x1 << 4) + #define FSMC_BCR_MTYP (0x3 << 2) + #define FSMC_BCR_MTYP_SRAM (0x0 << 2) + #define FSMC_BCR_MTYP_PSRAM (0x1 << 2) + #define FSMC_BCR_MTYP_NOR_FLASH (0x2 << 2) + #define FSMC_BCR_MUXEN (1U << FSMC_BCR_MUXEN_BIT) + #define FSMC_BCR_MBKEN (1U << FSMC_BCR_MBKEN_BIT) + + /* SRAM/NOR-Flash chip-select timing registers */ + + #define FSMC_BTR_ACCMOD (0x3 << 28) + #define FSMC_BTR_ACCMOD_A (0x0 << 28) + #define FSMC_BTR_ACCMOD_B (0x1 << 28) + #define FSMC_BTR_ACCMOD_C (0x2 << 28) + #define FSMC_BTR_ACCMOD_D (0x3 << 28) + #define FSMC_BTR_DATLAT (0xF << 24) + #define FSMC_BTR_CLKDIV (0xF << 20) + #define FSMC_BTR_BUSTURN (0xF << 16) + #define FSMC_BTR_DATAST (0xFF << 8) + #define FSMC_BTR_ADDHLD (0xF << 4) + #define FSMC_BTR_ADDSET 0xF + + /* SRAM/NOR-Flash write timing registers */ + + #define FSMC_BWTR_ACCMOD (0x3 << 28) + #define FSMC_BWTR_ACCMOD_A (0x0 << 28) + #define FSMC_BWTR_ACCMOD_B (0x1 << 28) + #define FSMC_BWTR_ACCMOD_C (0x2 << 28) + #define FSMC_BWTR_ACCMOD_D (0x3 << 28) + #define FSMC_BWTR_DATLAT (0xF << 24) + #define FSMC_BWTR_CLKDIV (0xF << 20) + #define FSMC_BWTR_DATAST (0xFF << 8) + #define FSMC_BWTR_ADDHLD (0xF << 4) + #define FSMC_BWTR_ADDSET 0xF + + /* NAND Flash/PC Card controller registers */ + + #define FSMC_PCR_ECCEN_BIT 6 + #define FSMC_PCR_PTYP_BIT 3 + #define FSMC_PCR_PBKEN_BIT 2 + #define FSMC_PCR_PWAITEN_BIT 1 + + #define FSMC_PCR_ECCPS (0x7 << 17) + #define FSMC_PCR_ECCPS_256B (0x0 << 17) + #define FSMC_PCR_ECCPS_512B (0x1 << 17) + #define FSMC_PCR_ECCPS_1024B (0x2 << 17) + #define FSMC_PCR_ECCPS_2048B (0x3 << 17) + #define FSMC_PCR_ECCPS_4096B (0x4 << 17) + #define FSMC_PCR_ECCPS_8192B (0x5 << 17) + #define FSMC_PCR_TAR (0xF << 13) + #define FSMC_PCR_TCLR (0xF << 9) + #define FSMC_PCR_ECCEN (1U << FSMC_PCR_ECCEN_BIT) + #define FSMC_PCR_PWID (0x3 << 4) + #define FSMC_PCR_PWID_8BITS (0x0 << 4) + #define FSMC_PCR_PWID_16BITS (0x1 << 4) + #define FSMC_PCR_PTYP (1U << FSMC_PCR_PTYP_BIT) + #define FSMC_PCR_PTYP_PC_CF_PCMCIA (0x0 << FSMC_PCR_PTYP_BIT) + #define FSMC_PCR_PTYP_NAND (0x1 << FSMC_PCR_PTYP_BIT) + #define FSMC_PCR_PBKEN (1U << FSMC_PCR_PBKEN_BIT) + #define FSMC_PCR_PWAITEN (1U << FSMC_PCR_PWAITEN_BIT) + + /* FIFO status and interrupt registers */ + + #define FSMC_SR_FEMPT_BIT 6 + #define FSMC_SR_IFEN_BIT 5 + #define FSMC_SR_ILEN_BIT 4 + #define FSMC_SR_IREN_BIT 3 + #define FSMC_SR_IFS_BIT 2 + #define FSMC_SR_ILS_BIT 1 + #define FSMC_SR_IRS_BIT 0 + + #define FSMC_SR_FEMPT (1U << FSMC_SR_FEMPT_BIT) + #define FSMC_SR_IFEN (1U << FSMC_SR_IFEN_BIT) + #define FSMC_SR_ILEN (1U << FSMC_SR_ILEN_BIT) + #define FSMC_SR_IREN (1U << FSMC_SR_IREN_BIT) + #define FSMC_SR_IFS (1U << FSMC_SR_IFS_BIT) + #define FSMC_SR_ILS (1U << FSMC_SR_ILS_BIT) + #define FSMC_SR_IRS (1U << FSMC_SR_IRS_BIT) + + /* Common memory space timing registers */ + + #define FSMC_PMEM_MEMHIZ (0xFF << 24) + #define FSMC_PMEM_MEMHOLD (0xFF << 16) + #define FSMC_PMEM_MEMWAIT (0xFF << 8) + #define FSMC_PMEM_MEMSET 0xFF + + /* Attribute memory space timing registers */ + + #define FSMC_PATT_ATTHIZ (0xFF << 24) + #define FSMC_PATT_ATTHOLD (0xFF << 16) + #define FSMC_PATT_ATTWAIT (0xFF << 8) + #define FSMC_PATT_ATTSET 0xFF + + /* I/O space timing register 4 */ + + #define FSMC_PIO_IOHIZ (0xFF << 24) + #define FSMC_PIO_IOHOLD (0xFF << 16) + #define FSMC_PIO_IOWAIT (0xFF << 8) + #define FSMC_PIO_IOSET 0xF diff --git a/docs/source/libmaple/api/gpio.rst b/docs/source/libmaple/api/gpio.rst new file mode 100644 index 0000000..faf0ad2 --- /dev/null +++ b/docs/source/libmaple/api/gpio.rst @@ -0,0 +1,243 @@ +.. highlight:: c +.. _libmaple-gpio: + +``gpio.h`` +========== + +General Purpose Input/Output (GPIO) port and Alternate Function +Input/Output (AFIO) support. + +.. contents:: Contents + :local: + +Types +----- + +.. doxygenstruct:: gpio_reg_map +.. doxygenstruct:: gpio_dev +.. doxygenenum:: gpio_pin_mode + +.. doxygenstruct:: afio_reg_map +.. doxygenenum:: afio_exti_port +.. doxygenenum:: afio_exti_num +.. doxygenenum:: afio_remap_peripheral +.. doxygenenum:: afio_debug_cfg + +Devices +------- + +.. doxygenvariable:: GPIOA +.. doxygenvariable:: GPIOB +.. doxygenvariable:: GPIOC +.. doxygenvariable:: GPIOD +.. doxygenvariable:: GPIOE +.. doxygenvariable:: GPIOF +.. doxygenvariable:: GPIOG + +Functions +--------- + +.. doxygenfunction:: gpio_init +.. doxygenfunction:: gpio_init_all +.. doxygenfunction:: gpio_set_mode +.. doxygenfunction:: gpio_exti_port +.. doxygenfunction:: gpio_write_bit +.. doxygenfunction:: gpio_read_bit +.. doxygenfunction:: gpio_toggle_bit + +.. doxygenfunction:: afio_init +.. doxygenfunction:: afio_exti_select + +.. _gpio-h-afio-remap: +.. doxygenfunction:: afio_remap +.. doxygenfunction:: afio_cfg_debug_ports + +Register Map Base Pointers +-------------------------- + +.. doxygendefine:: GPIOA_BASE +.. doxygendefine:: GPIOB_BASE +.. doxygendefine:: GPIOC_BASE +.. doxygendefine:: GPIOD_BASE +.. doxygendefine:: GPIOE_BASE +.. doxygendefine:: GPIOF_BASE +.. doxygendefine:: GPIOG_BASE + +.. doxygendefine:: AFIO_BASE + +Register Bit Definitions +------------------------ + +GPIO Control Registers +~~~~~~~~~~~~~~~~~~~~~~ + +These values apply to both the low and high configuration registers +(ST RM0008: GPIOx_CRL and GPIOx_CRH). You can shift them right by the +appropriate number of bits for the GPIO port bit you're interested in +to obtain a bit mask. + +For example, to mask out just the value of GPIOA_CRH_CNF12, note that +GPIO port bit 12's configuration starts at bit 18 in the corresponding +CRH. Thus, an appropriate mask is ``GPIOA_BASE->CRH & (GPIO_CR_CNF << +18)``. + +.. doxygendefine:: GPIO_CR_CNF_INPUT_ANALOG +.. doxygendefine:: GPIO_CR_CNF_INPUT_FLOATING +.. doxygendefine:: GPIO_CR_CNF_INPUT_PU_PD +.. doxygendefine:: GPIO_CR_CNF_OUTPUT_PP +.. doxygendefine:: GPIO_CR_CNF_OUTPUT_OD +.. doxygendefine:: GPIO_CR_CNF_AF_OUTPUT_PP +.. doxygendefine:: GPIO_CR_CNF_AF_OUTPUT_OD +.. doxygendefine:: GPIO_CR_MODE_INPUT +.. doxygendefine:: GPIO_CR_MODE_OUTPUT_10MHZ +.. doxygendefine:: GPIO_CR_MODE_OUTPUT_2MHZ +.. doxygendefine:: GPIO_CR_MODE_OUTPUT_50MHZ + +Event Control Register +~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: AFIO_EVCR_EVOE +.. doxygendefine:: AFIO_EVCR_PORT_PA +.. doxygendefine:: AFIO_EVCR_PORT_PB +.. doxygendefine:: AFIO_EVCR_PORT_PC +.. doxygendefine:: AFIO_EVCR_PORT_PD +.. doxygendefine:: AFIO_EVCR_PORT_PE +.. doxygendefine:: AFIO_EVCR_PIN_0 +.. doxygendefine:: AFIO_EVCR_PIN_1 +.. doxygendefine:: AFIO_EVCR_PIN_2 +.. doxygendefine:: AFIO_EVCR_PIN_3 +.. doxygendefine:: AFIO_EVCR_PIN_4 +.. doxygendefine:: AFIO_EVCR_PIN_5 +.. doxygendefine:: AFIO_EVCR_PIN_6 +.. doxygendefine:: AFIO_EVCR_PIN_7 +.. doxygendefine:: AFIO_EVCR_PIN_8 +.. doxygendefine:: AFIO_EVCR_PIN_9 +.. doxygendefine:: AFIO_EVCR_PIN_10 +.. doxygendefine:: AFIO_EVCR_PIN_11 +.. doxygendefine:: AFIO_EVCR_PIN_12 +.. doxygendefine:: AFIO_EVCR_PIN_13 +.. doxygendefine:: AFIO_EVCR_PIN_14 +.. doxygendefine:: AFIO_EVCR_PIN_15 + +AF Remap and Debug I/O Configuration Register +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: AFIO_MAPR_SWJ_CFG +.. doxygendefine:: AFIO_MAPR_SWJ_CFG_FULL_SWJ +.. doxygendefine:: AFIO_MAPR_SWJ_CFG_FULL_SWJ_NO_NJRST +.. doxygendefine:: AFIO_MAPR_SWJ_CFG_NO_JTAG_SW +.. doxygendefine:: AFIO_MAPR_SWJ_CFG_NO_JTAG_NO_SW +.. doxygendefine:: AFIO_MAPR_ADC2_ETRGREG_REMAP +.. doxygendefine:: AFIO_MAPR_ADC2_ETRGINJ_REMAP +.. doxygendefine:: AFIO_MAPR_ADC1_ETRGREG_REMAP +.. doxygendefine:: AFIO_MAPR_ADC1_ETRGINJ_REMAP +.. doxygendefine:: AFIO_MAPR_TIM5CH4_IREMAP +.. doxygendefine:: AFIO_MAPR_PD01_REMAP +.. doxygendefine:: AFIO_MAPR_CAN_REMAP +.. doxygendefine:: AFIO_MAPR_CAN_REMAP_NONE +.. doxygendefine:: AFIO_MAPR_CAN_REMAP_PB8_PB9 +.. doxygendefine:: AFIO_MAPR_CAN_REMAP_PD0_PD1 +.. doxygendefine:: AFIO_MAPR_TIM4_REMAP +.. doxygendefine:: AFIO_MAPR_TIM3_REMAP +.. doxygendefine:: AFIO_MAPR_TIM3_REMAP_NONE +.. doxygendefine:: AFIO_MAPR_TIM3_REMAP_PARTIAL +.. doxygendefine:: AFIO_MAPR_TIM3_REMAP_FULL +.. doxygendefine:: AFIO_MAPR_TIM2_REMAP +.. doxygendefine:: AFIO_MAPR_TIM2_REMAP_NONE +.. doxygendefine:: AFIO_MAPR_TIM2_REMAP_PA15_PB3_PA2_PA3 +.. doxygendefine:: AFIO_MAPR_TIM2_REMAP_PA0_PA1_PB10_PB11 +.. doxygendefine:: AFIO_MAPR_TIM2_REMAP_FULL +.. doxygendefine:: AFIO_MAPR_TIM1_REMAP +.. doxygendefine:: AFIO_MAPR_TIM1_REMAP_NONE +.. doxygendefine:: AFIO_MAPR_TIM1_REMAP_PARTIAL +.. doxygendefine:: AFIO_MAPR_TIM1_REMAP_FULL +.. doxygendefine:: AFIO_MAPR_USART3_REMAP +.. doxygendefine:: AFIO_MAPR_USART3_REMAP_NONE +.. doxygendefine:: AFIO_MAPR_USART3_REMAP_PARTIAL +.. doxygendefine:: AFIO_MAPR_USART3_REMAP_FULL +.. doxygendefine:: AFIO_MAPR_USART2_REMAP +.. doxygendefine:: AFIO_MAPR_USART1_REMAP +.. doxygendefine:: AFIO_MAPR_I2C1_REMAP +.. doxygendefine:: AFIO_MAPR_SPI1_REMAP + +External Interrupt Configuration Register 1 +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: AFIO_EXTICR1_EXTI3 +.. doxygendefine:: AFIO_EXTICR1_EXTI3_PA +.. doxygendefine:: AFIO_EXTICR1_EXTI3_PB +.. doxygendefine:: AFIO_EXTICR1_EXTI3_PC +.. doxygendefine:: AFIO_EXTICR1_EXTI3_PD +.. doxygendefine:: AFIO_EXTICR1_EXTI3_PE +.. doxygendefine:: AFIO_EXTICR1_EXTI3_PF +.. doxygendefine:: AFIO_EXTICR1_EXTI3_PG +.. doxygendefine:: AFIO_EXTICR1_EXTI2 +.. doxygendefine:: AFIO_EXTICR1_EXTI2_PA +.. doxygendefine:: AFIO_EXTICR1_EXTI2_PB +.. doxygendefine:: AFIO_EXTICR1_EXTI2_PC +.. doxygendefine:: AFIO_EXTICR1_EXTI2_PD +.. doxygendefine:: AFIO_EXTICR1_EXTI2_PE +.. doxygendefine:: AFIO_EXTICR1_EXTI2_PF +.. doxygendefine:: AFIO_EXTICR1_EXTI2_PG +.. doxygendefine:: AFIO_EXTICR1_EXTI1 +.. doxygendefine:: AFIO_EXTICR1_EXTI1_PA +.. doxygendefine:: AFIO_EXTICR1_EXTI1_PB +.. doxygendefine:: AFIO_EXTICR1_EXTI1_PC +.. doxygendefine:: AFIO_EXTICR1_EXTI1_PD +.. doxygendefine:: AFIO_EXTICR1_EXTI1_PE +.. doxygendefine:: AFIO_EXTICR1_EXTI1_PF +.. doxygendefine:: AFIO_EXTICR1_EXTI1_PG +.. doxygendefine:: AFIO_EXTICR1_EXTI0 +.. doxygendefine:: AFIO_EXTICR1_EXTI0_PA +.. doxygendefine:: AFIO_EXTICR1_EXTI0_PB +.. doxygendefine:: AFIO_EXTICR1_EXTI0_PC +.. doxygendefine:: AFIO_EXTICR1_EXTI0_PD +.. doxygendefine:: AFIO_EXTICR1_EXTI0_PE +.. doxygendefine:: AFIO_EXTICR1_EXTI0_PF +.. doxygendefine:: AFIO_EXTICR1_EXTI0_PG + +External Interrupt Configuration Register 2 +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: AFIO_EXTICR2_EXTI7 +.. doxygendefine:: AFIO_EXTICR2_EXTI7_PA +.. doxygendefine:: AFIO_EXTICR2_EXTI7_PB +.. doxygendefine:: AFIO_EXTICR2_EXTI7_PC +.. doxygendefine:: AFIO_EXTICR2_EXTI7_PD +.. doxygendefine:: AFIO_EXTICR2_EXTI7_PE +.. doxygendefine:: AFIO_EXTICR2_EXTI7_PF +.. doxygendefine:: AFIO_EXTICR2_EXTI7_PG +.. doxygendefine:: AFIO_EXTICR2_EXTI6 +.. doxygendefine:: AFIO_EXTICR2_EXTI6_PA +.. doxygendefine:: AFIO_EXTICR2_EXTI6_PB +.. doxygendefine:: AFIO_EXTICR2_EXTI6_PC +.. doxygendefine:: AFIO_EXTICR2_EXTI6_PD +.. doxygendefine:: AFIO_EXTICR2_EXTI6_PE +.. doxygendefine:: AFIO_EXTICR2_EXTI6_PF +.. doxygendefine:: AFIO_EXTICR2_EXTI6_PG +.. doxygendefine:: AFIO_EXTICR2_EXTI5 +.. doxygendefine:: AFIO_EXTICR2_EXTI5_PA +.. doxygendefine:: AFIO_EXTICR2_EXTI5_PB +.. doxygendefine:: AFIO_EXTICR2_EXTI5_PC +.. doxygendefine:: AFIO_EXTICR2_EXTI5_PD +.. doxygendefine:: AFIO_EXTICR2_EXTI5_PE +.. doxygendefine:: AFIO_EXTICR2_EXTI5_PF +.. doxygendefine:: AFIO_EXTICR2_EXTI5_PG +.. doxygendefine:: AFIO_EXTICR2_EXTI4 +.. doxygendefine:: AFIO_EXTICR2_EXTI4_PA +.. doxygendefine:: AFIO_EXTICR2_EXTI4_PB +.. doxygendefine:: AFIO_EXTICR2_EXTI4_PC +.. doxygendefine:: AFIO_EXTICR2_EXTI4_PD +.. doxygendefine:: AFIO_EXTICR2_EXTI4_PE +.. doxygendefine:: AFIO_EXTICR2_EXTI4_PF +.. doxygendefine:: AFIO_EXTICR2_EXTI4_PG + +AF Remap and Debug I/O Configuration Register 2 +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: AFIO_MAPR2_FSMC_NADV +.. doxygendefine:: AFIO_MAPR2_TIM14_REMAP +.. doxygendefine:: AFIO_MAPR2_TIM13_REMAP +.. doxygendefine:: AFIO_MAPR2_TIM11_REMAP +.. doxygendefine:: AFIO_MAPR2_TIM10_REMAP +.. doxygendefine:: AFIO_MAPR2_TIM9_REMAP diff --git a/docs/source/libmaple/api/i2c.rst b/docs/source/libmaple/api/i2c.rst new file mode 100644 index 0000000..ff380cc --- /dev/null +++ b/docs/source/libmaple/api/i2c.rst @@ -0,0 +1,124 @@ +.. highlight:: c +.. _libmaple-i2c: + +``i2c.h`` +========= + +Inter-Integrated Circuit (|i2c|) peripheral support. + +.. contents:: Contents + :local: + +Important Note +-------------- + +There are some important known problems with the built-in I2C +peripherals. For more information, see STM32F10xx8 and STM32F10xxB +Errata sheet (ST Doc ID 14574 Rev 8), Section 2.11.1, 2.11.2. An +important consequence of these problems is that the |i2c| interrupt +must not be preempted. Consequently, (by default) Wirish uses an +|i2c| interrupt priority which is the highest in the system (priority +level 0). Other interrupt priorities are set lower. + +Types +----- + +.. doxygenstruct:: i2c_reg_map +.. doxygenenum:: i2c_state +.. doxygenstruct:: i2c_msg +.. doxygenstruct:: i2c_dev + +Devices +------- + +.. doxygenvariable:: I2C1 +.. doxygenvariable:: I2C2 + +Functions +--------- + +.. doxygenfunction:: i2c_init +.. doxygenfunction:: i2c_master_enable +.. doxygenfunction:: i2c_master_xfer +.. doxygenfunction:: i2c_bus_reset +.. doxygenfunction:: i2c_disable +.. doxygenfunction:: i2c_peripheral_enable +.. doxygenfunction:: i2c_peripheral_disable +.. doxygenfunction:: i2c_write +.. doxygenfunction:: i2c_set_input_clk +.. doxygenfunction:: i2c_set_clk_control +.. doxygenfunction:: i2c_set_trise +.. doxygenfunction:: i2c_start_condition +.. doxygenfunction:: i2c_stop_condition +.. doxygenfunction:: i2c_enable_irq +.. doxygenfunction:: i2c_disable_irq +.. doxygenfunction:: i2c_enable_ack +.. doxygenfunction:: i2c_disable_ack + +Register Map Base Pointers +-------------------------- + +.. doxygendefine:: I2C1_BASE +.. doxygendefine:: I2C2_BASE + +Register Bit Definitions +------------------------ + +Control register 1 +~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: I2C_CR1_SWRST +.. doxygendefine:: I2C_CR1_ALERT +.. doxygendefine:: I2C_CR1_PEC +.. doxygendefine:: I2C_CR1_POS +.. doxygendefine:: I2C_CR1_ACK +.. doxygendefine:: I2C_CR1_START +.. doxygendefine:: I2C_CR1_STOP +.. doxygendefine:: I2C_CR1_PE + +Control register 2 +~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: I2C_CR2_LAST +.. doxygendefine:: I2C_CR2_DMAEN +.. doxygendefine:: I2C_CR2_ITBUFEN +.. doxygendefine:: I2C_CR2_ITEVTEN +.. doxygendefine:: I2C_CR2_ITERREN +.. doxygendefine:: I2C_CR2_FREQ + +Clock control register +~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: I2C_CCR_FS +.. doxygendefine:: I2C_CCR_DUTY +.. doxygendefine:: I2C_CCR_CCR + +Status register 1 +~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: I2C_SR1_SB +.. doxygendefine:: I2C_SR1_ADDR +.. doxygendefine:: I2C_SR1_BTF +.. doxygendefine:: I2C_SR1_ADD10 +.. doxygendefine:: I2C_SR1_STOPF +.. doxygendefine:: I2C_SR1_RXNE +.. doxygendefine:: I2C_SR1_TXE +.. doxygendefine:: I2C_SR1_BERR +.. doxygendefine:: I2C_SR1_ARLO +.. doxygendefine:: I2C_SR1_AF +.. doxygendefine:: I2C_SR1_OVR +.. doxygendefine:: I2C_SR1_PECERR +.. doxygendefine:: I2C_SR1_TIMEOUT +.. doxygendefine:: I2C_SR1_SMBALERT + +Status register 2 +~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: I2C_SR2_MSL +.. doxygendefine:: I2C_SR2_BUSY +.. doxygendefine:: I2C_SR2_TRA +.. doxygendefine:: I2C_SR2_GENCALL +.. doxygendefine:: I2C_SR2_SMBDEFAULT +.. doxygendefine:: I2C_SR2_SMBHOST +.. doxygendefine:: I2C_SR2_DUALF +.. doxygendefine:: I2C_SR2_PEC diff --git a/docs/source/libmaple/api/iwdg.rst b/docs/source/libmaple/api/iwdg.rst new file mode 100644 index 0000000..65f9f7b --- /dev/null +++ b/docs/source/libmaple/api/iwdg.rst @@ -0,0 +1,80 @@ +.. highlight:: c +.. _libmaple-iwdg: + +``<libmaple/iwdg.h>`` +===================== + +Independent Watchdog (IWDG) support. The IWDG peripheral is common +across supported targets, so everything documented here is portable. + +.. contents:: Contents + :local: + +Usage Note +---------- + +To use the independent watchdog, first call :ref:`iwdg_init() +<libmaple-iwdg-iwdg_init>` with the appropriate prescaler and IWDG +counter reload values for your application. Afterwards, you must +periodically call :ref:`iwdg_feed() <libmaple-iwdg-iwdg_feed>` before +the IWDG counter reaches zero to reset the counter to its reload +value. If you do not, the chip will reset. + +Once started, the independent watchdog cannot be turned off. + +Devices +------- + +None at this time. + +Functions +--------- + +.. _libmaple-iwdg-iwdg_init: +.. doxygenfunction:: iwdg_init +.. _libmaple-iwdg-iwdg_feed: +.. doxygenfunction:: iwdg_feed + +Types +----- + +.. doxygenenum:: iwdg_prescaler + + +Register Maps +------------- + +.. doxygendefine:: IWDG_BASE + +.. doxygenstruct:: iwdg_reg_map + +Register Bit Definitions +------------------------ + +These are given as source code. + +:: + + /* Key register */ + + #define IWDG_KR_UNLOCK 0x5555 + #define IWDG_KR_FEED 0xAAAA + #define IWDG_KR_START 0xCCCC + + /* Prescaler register */ + + #define IWDG_PR_DIV_4 0x0 + #define IWDG_PR_DIV_8 0x1 + #define IWDG_PR_DIV_16 0x2 + #define IWDG_PR_DIV_32 0x3 + #define IWDG_PR_DIV_64 0x4 + #define IWDG_PR_DIV_128 0x5 + #define IWDG_PR_DIV_256 0x6 + + /* Status register */ + + #define IWDG_SR_RVU_BIT 1 + #define IWDG_SR_PVU_BIT 0 + + #define IWDG_SR_RVU (1U << IWDG_SR_RVU_BIT) + #define IWDG_SR_PVU (1U << IWDG_SR_PVU_BIT) diff --git a/docs/source/libmaple/api/libmaple.rst b/docs/source/libmaple/api/libmaple.rst new file mode 100644 index 0000000..7deb659 --- /dev/null +++ b/docs/source/libmaple/api/libmaple.rst @@ -0,0 +1,11 @@ +.. highlight:: c +.. _libmaple-libmaple: + +``<libmaple/libmaple.h>`` +========================= + +Base include file for libmaple. + +This file includes :ref:`libmaple-libmaple_types`, +:ref:`libmaple-stm32`, and :ref:`libmaple-util`. You shouldn't rely +on it doing anything else, however. diff --git a/docs/source/libmaple/api/libmaple_types.rst b/docs/source/libmaple/api/libmaple_types.rst new file mode 100644 index 0000000..5ca446e --- /dev/null +++ b/docs/source/libmaple/api/libmaple_types.rst @@ -0,0 +1,85 @@ +.. highlight:: c +.. _libmaple-libmaple_types: + +``<libmaple/libmaple_types.h>`` +=============================== + +Defines the base types and type-related macros used throughout the +rest of libmaple. + +.. contents:: Contents + :local: + +Integral Types +-------------- + +.. doxygentypedef:: uint8 +.. doxygentypedef:: uint16 +.. doxygentypedef:: uint32 +.. doxygentypedef:: uint64 +.. doxygentypedef:: int8 +.. doxygentypedef:: int16 +.. doxygentypedef:: int32 +.. doxygentypedef:: int64 + +Attributes and Type Qualifiers +------------------------------ + +In the case of macros for GCC's ``__attribute__``\ s, we have our own +macros mostly to save typing, but also in hopes that they might be +expressible using different compiler extensions, or to give them +different interpretations when running e.g. Doxygen on libmaple. + +.. c:macro:: __always_inline + + Macro for ``inline __attribute__((always_inline))``. This can be + used to defeat GCC's ``-Os`` when you Really Mean Inline. + +.. c:macro:: __attr_flash + + Macro for a GCC ``__attribute__`` which (when using libmaple's + linker scripts) will cause the variable being marked to be stored + in Flash, rather than SRAM. It's useful for read-only variables + like look-up tables. + +.. c:macro:: __deprecated + + Macro for ``__attribute__((deprecated))``. Its use causes GCC to + emit deprecation warnings when the deprecated functionality is + used. It's not used for everything that gets deprecated, so don't + rely on it to catch all uses of deprecated APIs. + +.. c:macro:: __packed + + Macro for ``__attribute__((packed))``. + +.. c:macro:: __io + + Macro for ``volatile`` which denotes that the variable whose type + is being qualified is IO-mapped. Its most common use is in the + individual members of each :ref:`register map + <libmaple-overview-regmaps>` struct. + +.. c:macro:: __weak + + Macro for ``__attribute__((weak))``. + +.. c:macro:: __unused + + Macro for ``__attribute__((unused))``. This can be used + (sparingly!) to silence unused function warnings when GCC is + mistaken. + +Miscellaneous +------------- + +.. doxygentypedef:: voidFuncPtr + +.. c:macro:: offsetof(type, member) + + If left undefined, this is defined to ``__builtin_ofsetof(type, + member)``. + +.. c:macro:: NULL + + If left undefined, this is defined to ``0``. diff --git a/docs/source/libmaple/api/nvic.rst b/docs/source/libmaple/api/nvic.rst new file mode 100644 index 0000000..505e36e --- /dev/null +++ b/docs/source/libmaple/api/nvic.rst @@ -0,0 +1,67 @@ +.. highlight:: c +.. _libmaple-nvic: + +``<libmaple/nvic.h>`` +===================== + +Nested Vector Interrupt Controller (NVIC) support. + +The same API is used on all targets, but the available interrupts are +target-dependent. To manage this, each target series defines an +:ref:`nvic_irq_num <libmaple-nvic-nvic_irq_num>` enumerator for each +available interrupt. + +.. contents:: Contents + :local: + +Devices +------- + +None at this time. + +.. _libmaple-nvic-nvic_irq_num: + +``nvic_irq_num`` +---------------- + +This target-dependent enum is used to identify an interrupt vector +number. Interrupts which are common across series have the same token +(though not necessarily the same value) for their ``nvic_irq_num``\ s. +The available values on each supported target series are as follows. + +STM32F1 Targets +~~~~~~~~~~~~~~~ + +.. doxygenenum:: stm32f1::nvic_irq_num + +STM32F2 Targets +~~~~~~~~~~~~~~~ + +.. doxygenenum:: stm32f2::nvic_irq_num + +Functions +--------- + +.. doxygenfunction:: nvic_init +.. doxygenfunction:: nvic_set_vector_table +.. doxygenfunction:: nvic_irq_set_priority +.. doxygenfunction:: nvic_globalirq_enable +.. doxygenfunction:: nvic_globalirq_disable +.. doxygenfunction:: nvic_irq_enable +.. doxygenfunction:: nvic_irq_disable +.. doxygenfunction:: nvic_irq_disable_all +.. doxygenfunction:: nvic_sys_reset + +Register Maps +------------- + +Since the NVIC is part of the ARM core, its registers and base pointer +are common across all targes. + +.. doxygendefine:: NVIC_BASE +.. doxygenstruct:: nvic_reg_map + +Register Bit Definitions +------------------------ + +None at this time. diff --git a/docs/source/libmaple/api/pwr.rst b/docs/source/libmaple/api/pwr.rst new file mode 100644 index 0000000..6a2cf22 --- /dev/null +++ b/docs/source/libmaple/api/pwr.rst @@ -0,0 +1,51 @@ +.. highlight:: c +.. _libmaple-pwr: + +``pwr.h`` +========= + +Power control (PWR) support. + +.. contents:: Contents + :local: + +Types +----- + +.. doxygenstruct:: pwr_reg_map + +Devices +------- + +None. + +Functions +--------- + +.. doxygenfunction:: pwr_init + +Register Map Base Pointers +-------------------------- + +.. doxygendefine:: PWR_BASE + +Register Bit Definitions +------------------------ + +Control register +~~~~~~~~~~~~~~~~ + +.. doxygendefine:: PWR_CR_DBP +.. doxygendefine:: PWR_CR_PVDE +.. doxygendefine:: PWR_CR_CSBF +.. doxygendefine:: PWR_CR_CWUF +.. doxygendefine:: PWR_CR_PDDS +.. doxygendefine:: PWR_CR_LPDS + +Control and status register +~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: PWR_CSR_EWUP +.. doxygendefine:: PWR_CSR_PVDO +.. doxygendefine:: PWR_CSR_SBF +.. doxygendefine:: PWR_CSR_WUF diff --git a/docs/source/libmaple/api/rcc-reg-bits.txt b/docs/source/libmaple/api/rcc-reg-bits.txt new file mode 100644 index 0000000..6b1133d --- /dev/null +++ b/docs/source/libmaple/api/rcc-reg-bits.txt @@ -0,0 +1,1017 @@ +STM32F1 Targets +~~~~~~~~~~~~~~~ + +Clock control register +++++++++++++++++++++++ + +:: + + #define RCC_CR_PLLRDY_BIT 25 + #define RCC_CR_PLLON_BIT 24 + #define RCC_CR_CSSON_BIT 19 + #define RCC_CR_HSEBYP_BIT 18 + #define RCC_CR_HSERDY_BIT 17 + #define RCC_CR_HSEON_BIT 16 + #define RCC_CR_HSIRDY_BIT 1 + #define RCC_CR_HSION_BIT 0 + + #define RCC_CR_PLLRDY (1U << RCC_CR_PLLRDY_BIT) + #define RCC_CR_PLLON (1U << RCC_CR_PLLON_BIT) + #define RCC_CR_CSSON (1U << RCC_CR_CSSON_BIT) + #define RCC_CR_HSEBYP (1U << RCC_CR_HSEBYP_BIT) + #define RCC_CR_HSERDY (1U << RCC_CR_HSERDY_BIT) + #define RCC_CR_HSEON (1U << RCC_CR_HSEON_BIT) + #define RCC_CR_HSICAL (0xFF << 8) + #define RCC_CR_HSITRIM (0x1F << 3) + #define RCC_CR_HSIRDY (1U << RCC_CR_HSIRDY_BIT) + #define RCC_CR_HSION (1U << RCC_CR_HSION_BIT) + +Clock configuration register +++++++++++++++++++++++++++++ + +:: + + #define RCC_CFGR_USBPRE_BIT 22 + #define RCC_CFGR_PLLXTPRE_BIT 17 + #define RCC_CFGR_PLLSRC_BIT 16 + + #define RCC_CFGR_MCO (0x3 << 24) + #define RCC_CFGR_USBPRE (1U << RCC_CFGR_USBPRE_BIT) + #define RCC_CFGR_PLLMUL (0xF << 18) + #define RCC_CFGR_PLLXTPRE (1U << RCC_CFGR_PLLXTPRE_BIT) + #define RCC_CFGR_PLLSRC (1U << RCC_CFGR_PLLSRC_BIT) + #define RCC_CFGR_ADCPRE (0x3 << 14) + #define RCC_CFGR_PPRE2 (0x7 << 11) + #define RCC_CFGR_PPRE1 (0x7 << 8) + #define RCC_CFGR_HPRE (0xF << 4) + #define RCC_CFGR_SWS (0x3 << 2) + #define RCC_CFGR_SWS_PLL (0x2 << 2) + #define RCC_CFGR_SWS_HSE (0x1 << 2) + #define RCC_CFGR_SW 0x3 + #define RCC_CFGR_SW_PLL 0x2 + #define RCC_CFGR_SW_HSE 0x1 + +Clock interrupt register +++++++++++++++++++++++++ + +:: + + #define RCC_CIR_CSSC_BIT 23 + #define RCC_CIR_PLLRDYC_BIT 20 + #define RCC_CIR_HSERDYC_BIT 19 + #define RCC_CIR_HSIRDYC_BIT 18 + #define RCC_CIR_LSERDYC_BIT 17 + #define RCC_CIR_LSIRDYC_BIT 16 + #define RCC_CIR_PLLRDYIE_BIT 12 + #define RCC_CIR_HSERDYIE_BIT 11 + #define RCC_CIR_HSIRDYIE_BIT 10 + #define RCC_CIR_LSERDYIE_BIT 9 + #define RCC_CIR_LSIRDYIE_BIT 8 + #define RCC_CIR_CSSF_BIT 7 + #define RCC_CIR_PLLRDYF_BIT 4 + #define RCC_CIR_HSERDYF_BIT 3 + #define RCC_CIR_HSIRDYF_BIT 2 + #define RCC_CIR_LSERDYF_BIT 1 + #define RCC_CIR_LSIRDYF_BIT 0 + + #define RCC_CIR_CSSC (1U << RCC_CIR_CSSC_BIT) + #define RCC_CIR_PLLRDYC (1U << RCC_CIR_PLLRDYC_BIT) + #define RCC_CIR_HSERDYC (1U << RCC_CIR_HSERDYC_BIT) + #define RCC_CIR_HSIRDYC (1U << RCC_CIR_HSIRDYC_BIT) + #define RCC_CIR_LSERDYC (1U << RCC_CIR_LSERDYC_BIT) + #define RCC_CIR_LSIRDYC (1U << RCC_CIR_LSIRDYC_BIT) + #define RCC_CIR_PLLRDYIE (1U << RCC_CIR_PLLRDYIE_BIT) + #define RCC_CIR_HSERDYIE (1U << RCC_CIR_HSERDYIE_BIT) + #define RCC_CIR_HSIRDYIE (1U << RCC_CIR_HSIRDYIE_BIT) + #define RCC_CIR_LSERDYIE (1U << RCC_CIR_LSERDYIE_BIT) + #define RCC_CIR_LSIRDYIE (1U << RCC_CIR_LSIRDYIE_BIT) + #define RCC_CIR_CSSF (1U << RCC_CIR_CSSF_BIT) + #define RCC_CIR_PLLRDYF (1U << RCC_CIR_PLLRDYF_BIT) + #define RCC_CIR_HSERDYF (1U << RCC_CIR_HSERDYF_BIT) + #define RCC_CIR_HSIRDYF (1U << RCC_CIR_HSIRDYF_BIT) + #define RCC_CIR_LSERDYF (1U << RCC_CIR_LSERDYF_BIT) + #define RCC_CIR_LSIRDYF (1U << RCC_CIR_LSIRDYF_BIT) + +Peripheral reset registers +++++++++++++++++++++++++++ + +:: + + #define RCC_APB2RSTR_TIM11RST_BIT 21 + #define RCC_APB2RSTR_TIM10RST_BIT 20 + #define RCC_APB2RSTR_TIM9RST_BIT 19 + #define RCC_APB2RSTR_ADC3RST_BIT 15 + #define RCC_APB2RSTR_USART1RST_BIT 14 + #define RCC_APB2RSTR_TIM8RST_BIT 13 + #define RCC_APB2RSTR_SPI1RST_BIT 12 + #define RCC_APB2RSTR_TIM1RST_BIT 11 + #define RCC_APB2RSTR_ADC2RST_BIT 10 + #define RCC_APB2RSTR_ADC1RST_BIT 9 + #define RCC_APB2RSTR_IOPGRST_BIT 8 + #define RCC_APB2RSTR_IOPFRST_BIT 7 + #define RCC_APB2RSTR_IOPERST_BIT 6 + #define RCC_APB2RSTR_IOPDRST_BIT 5 + #define RCC_APB2RSTR_IOPCRST_BIT 4 + #define RCC_APB2RSTR_IOPBRST_BIT 3 + #define RCC_APB2RSTR_IOPARST_BIT 2 + #define RCC_APB2RSTR_AFIORST_BIT 0 + + #define RCC_APB2RSTR_TIM11RST (1U << RCC_APB2RSTR_TIM11RST_BIT) + #define RCC_APB2RSTR_TIM10RST (1U << RCC_APB2RSTR_TIM10RST_BIT) + #define RCC_APB2RSTR_TIM9RST (1U << RCC_APB2RSTR_TIM9RST_BIT) + #define RCC_APB2RSTR_ADC3RST (1U << RCC_APB2RSTR_ADC3RST_BIT) + #define RCC_APB2RSTR_USART1RST (1U << RCC_APB2RSTR_USART1RST_BIT) + #define RCC_APB2RSTR_TIM8RST (1U << RCC_APB2RSTR_TIM8RST_BIT) + #define RCC_APB2RSTR_SPI1RST (1U << RCC_APB2RSTR_SPI1RST_BIT) + #define RCC_APB2RSTR_TIM1RST (1U << RCC_APB2RSTR_TIM1RST_BIT) + #define RCC_APB2RSTR_ADC2RST (1U << RCC_APB2RSTR_ADC2RST_BIT) + #define RCC_APB2RSTR_ADC1RST (1U << RCC_APB2RSTR_ADC1RST_BIT) + #define RCC_APB2RSTR_IOPGRST (1U << RCC_APB2RSTR_IOPGRST_BIT) + #define RCC_APB2RSTR_IOPFRST (1U << RCC_APB2RSTR_IOPFRST_BIT) + #define RCC_APB2RSTR_IOPERST (1U << RCC_APB2RSTR_IOPERST_BIT) + #define RCC_APB2RSTR_IOPDRST (1U << RCC_APB2RSTR_IOPDRST_BIT) + #define RCC_APB2RSTR_IOPCRST (1U << RCC_APB2RSTR_IOPCRST_BIT) + #define RCC_APB2RSTR_IOPBRST (1U << RCC_APB2RSTR_IOPBRST_BIT) + #define RCC_APB2RSTR_IOPARST (1U << RCC_APB2RSTR_IOPARST_BIT) + #define RCC_APB2RSTR_AFIORST (1U << RCC_APB2RSTR_AFIORST_BIT) + + #define RCC_APB1RSTR_DACRST_BIT 29 + #define RCC_APB1RSTR_PWRRST_BIT 28 + #define RCC_APB1RSTR_BKPRST_BIT 27 + #define RCC_APB1RSTR_CANRST_BIT 25 + #define RCC_APB1RSTR_USBRST_BIT 23 + #define RCC_APB1RSTR_I2C2RST_BIT 22 + #define RCC_APB1RSTR_I2C1RST_BIT 21 + #define RCC_APB1RSTR_UART5RST_BIT 20 + #define RCC_APB1RSTR_UART4RST_BIT 19 + #define RCC_APB1RSTR_USART3RST_BIT 18 + #define RCC_APB1RSTR_USART2RST_BIT 17 + #define RCC_APB1RSTR_SPI3RST_BIT 15 + #define RCC_APB1RSTR_SPI2RST_BIT 14 + #define RCC_APB1RSTR_WWDRST_BIT 11 + #define RCC_APB1RSTR_TIM14RST_BIT 8 + #define RCC_APB1RSTR_TIM13RST_BIT 7 + #define RCC_APB1RSTR_TIM12RST_BIT 6 + #define RCC_APB1RSTR_TIM7RST_BIT 5 + #define RCC_APB1RSTR_TIM6RST_BIT 4 + #define RCC_APB1RSTR_TIM5RST_BIT 3 + #define RCC_APB1RSTR_TIM4RST_BIT 2 + #define RCC_APB1RSTR_TIM3RST_BIT 1 + #define RCC_APB1RSTR_TIM2RST_BIT 0 + + #define RCC_APB1RSTR_DACRST (1U << RCC_APB1RSTR_DACRST_BIT) + #define RCC_APB1RSTR_PWRRST (1U << RCC_APB1RSTR_PWRRST_BIT) + #define RCC_APB1RSTR_BKPRST (1U << RCC_APB1RSTR_BKPRST_BIT) + #define RCC_APB1RSTR_CANRST (1U << RCC_APB1RSTR_CANRST_BIT) + #define RCC_APB1RSTR_USBRST (1U << RCC_APB1RSTR_USBRST_BIT) + #define RCC_APB1RSTR_I2C2RST (1U << RCC_APB1RSTR_I2C2RST_BIT) + #define RCC_APB1RSTR_I2C1RST (1U << RCC_APB1RSTR_I2C1RST_BIT) + #define RCC_APB1RSTR_UART5RST (1U << RCC_APB1RSTR_UART5RST_BIT) + #define RCC_APB1RSTR_UART4RST (1U << RCC_APB1RSTR_UART4RST_BIT) + #define RCC_APB1RSTR_USART3RST (1U << RCC_APB1RSTR_USART3RST_BIT) + #define RCC_APB1RSTR_USART2RST (1U << RCC_APB1RSTR_USART2RST_BIT) + #define RCC_APB1RSTR_SPI3RST (1U << RCC_APB1RSTR_SPI3RST_BIT) + #define RCC_APB1RSTR_SPI2RST (1U << RCC_APB1RSTR_SPI2RST_BIT) + #define RCC_APB1RSTR_WWDRST (1U << RCC_APB1RSTR_WWDRST_BIT) + #define RCC_APB1RSTR_TIM14RST (1U << RCC_APB1RSTR_TIM14RST_BIT) + #define RCC_APB1RSTR_TIM13RST (1U << RCC_APB1RSTR_TIM13RST_BIT) + #define RCC_APB1RSTR_TIM12RST (1U << RCC_APB1RSTR_TIM12RST_BIT) + #define RCC_APB1RSTR_TIM7RST (1U << RCC_APB1RSTR_TIM7RST_BIT) + #define RCC_APB1RSTR_TIM6RST (1U << RCC_APB1RSTR_TIM6RST_BIT) + #define RCC_APB1RSTR_TIM5RST (1U << RCC_APB1RSTR_TIM5RST_BIT) + #define RCC_APB1RSTR_TIM4RST (1U << RCC_APB1RSTR_TIM4RST_BIT) + #define RCC_APB1RSTR_TIM3RST (1U << RCC_APB1RSTR_TIM3RST_BIT) + #define RCC_APB1RSTR_TIM2RST (1U << RCC_APB1RSTR_TIM2RST_BIT) + +Peripheral clock enable registers ++++++++++++++++++++++++++++++++++ + +:: + + #define RCC_AHBENR_SDIOEN_BIT 10 + #define RCC_AHBENR_FSMCEN_BIT 8 + #define RCC_AHBENR_CRCEN_BIT 7 + #define RCC_AHBENR_FLITFEN_BIT 4 + #define RCC_AHBENR_SRAMEN_BIT 2 + #define RCC_AHBENR_DMA2EN_BIT 1 + #define RCC_AHBENR_DMA1EN_BIT 0 + + #define RCC_AHBENR_SDIOEN (1U << RCC_AHBENR_SDIOEN_BIT) + #define RCC_AHBENR_FSMCEN (1U << RCC_AHBENR_FSMCEN_BIT) + #define RCC_AHBENR_CRCEN (1U << RCC_AHBENR_CRCEN_BIT) + #define RCC_AHBENR_FLITFEN (1U << RCC_AHBENR_FLITFEN_BIT) + #define RCC_AHBENR_SRAMEN (1U << RCC_AHBENR_SRAMEN_BIT) + #define RCC_AHBENR_DMA2EN (1U << RCC_AHBENR_DMA2EN_BIT) + #define RCC_AHBENR_DMA1EN (1U << RCC_AHBENR_DMA1EN_BIT) + + #define RCC_APB2ENR_TIM11EN_BIT 21 + #define RCC_APB2ENR_TIM10EN_BIT 20 + #define RCC_APB2ENR_TIM9EN_BIT 19 + #define RCC_APB2ENR_ADC3EN_BIT 15 + #define RCC_APB2ENR_USART1EN_BIT 14 + #define RCC_APB2ENR_TIM8EN_BIT 13 + #define RCC_APB2ENR_SPI1EN_BIT 12 + #define RCC_APB2ENR_TIM1EN_BIT 11 + #define RCC_APB2ENR_ADC2EN_BIT 10 + #define RCC_APB2ENR_ADC1EN_BIT 9 + #define RCC_APB2ENR_IOPGEN_BIT 8 + #define RCC_APB2ENR_IOPFEN_BIT 7 + #define RCC_APB2ENR_IOPEEN_BIT 6 + #define RCC_APB2ENR_IOPDEN_BIT 5 + #define RCC_APB2ENR_IOPCEN_BIT 4 + #define RCC_APB2ENR_IOPBEN_BIT 3 + #define RCC_APB2ENR_IOPAEN_BIT 2 + #define RCC_APB2ENR_AFIOEN_BIT 0 + + #define RCC_APB2ENR_TIM11EN (1U << RCC_APB2ENR_TIM11EN_BIT) + #define RCC_APB2ENR_TIM10EN (1U << RCC_APB2ENR_TIM10EN_BIT) + #define RCC_APB2ENR_TIM9EN (1U << RCC_APB2ENR_TIM9EN_BIT) + #define RCC_APB2ENR_ADC3EN (1U << RCC_APB2ENR_ADC3EN_BIT) + #define RCC_APB2ENR_USART1EN (1U << RCC_APB2ENR_USART1EN_BIT) + #define RCC_APB2ENR_TIM8EN (1U << RCC_APB2ENR_TIM8EN_BIT) + #define RCC_APB2ENR_SPI1EN (1U << RCC_APB2ENR_SPI1EN_BIT) + #define RCC_APB2ENR_TIM1EN (1U << RCC_APB2ENR_TIM1EN_BIT) + #define RCC_APB2ENR_ADC2EN (1U << RCC_APB2ENR_ADC2EN_BIT) + #define RCC_APB2ENR_ADC1EN (1U << RCC_APB2ENR_ADC1EN_BIT) + #define RCC_APB2ENR_IOPGEN (1U << RCC_APB2ENR_IOPGEN_BIT) + #define RCC_APB2ENR_IOPFEN (1U << RCC_APB2ENR_IOPFEN_BIT) + #define RCC_APB2ENR_IOPEEN (1U << RCC_APB2ENR_IOPEEN_BIT) + #define RCC_APB2ENR_IOPDEN (1U << RCC_APB2ENR_IOPDEN_BIT) + #define RCC_APB2ENR_IOPCEN (1U << RCC_APB2ENR_IOPCEN_BIT) + #define RCC_APB2ENR_IOPBEN (1U << RCC_APB2ENR_IOPBEN_BIT) + #define RCC_APB2ENR_IOPAEN (1U << RCC_APB2ENR_IOPAEN_BIT) + #define RCC_APB2ENR_AFIOEN (1U << RCC_APB2ENR_AFIOEN_BIT) + + #define RCC_APB1ENR_DACEN_BIT 29 + #define RCC_APB1ENR_PWREN_BIT 28 + #define RCC_APB1ENR_BKPEN_BIT 27 + #define RCC_APB1ENR_CANEN_BIT 25 + #define RCC_APB1ENR_USBEN_BIT 23 + #define RCC_APB1ENR_I2C2EN_BIT 22 + #define RCC_APB1ENR_I2C1EN_BIT 21 + #define RCC_APB1ENR_UART5EN_BIT 20 + #define RCC_APB1ENR_UART4EN_BIT 19 + #define RCC_APB1ENR_USART3EN_BIT 18 + #define RCC_APB1ENR_USART2EN_BIT 17 + #define RCC_APB1ENR_SPI3EN_BIT 15 + #define RCC_APB1ENR_SPI2EN_BIT 14 + #define RCC_APB1ENR_WWDEN_BIT 11 + #define RCC_APB1ENR_TIM14EN_BIT 8 + #define RCC_APB1ENR_TIM13EN_BIT 7 + #define RCC_APB1ENR_TIM12EN_BIT 6 + #define RCC_APB1ENR_TIM7EN_BIT 5 + #define RCC_APB1ENR_TIM6EN_BIT 4 + #define RCC_APB1ENR_TIM5EN_BIT 3 + #define RCC_APB1ENR_TIM4EN_BIT 2 + #define RCC_APB1ENR_TIM3EN_BIT 1 + #define RCC_APB1ENR_TIM2EN_BIT 0 + + #define RCC_APB1ENR_DACEN (1U << RCC_APB1ENR_DACEN_BIT) + #define RCC_APB1ENR_PWREN (1U << RCC_APB1ENR_PWREN_BIT) + #define RCC_APB1ENR_BKPEN (1U << RCC_APB1ENR_BKPEN_BIT) + #define RCC_APB1ENR_CANEN (1U << RCC_APB1ENR_CANEN_BIT) + #define RCC_APB1ENR_USBEN (1U << RCC_APB1ENR_USBEN_BIT) + #define RCC_APB1ENR_I2C2EN (1U << RCC_APB1ENR_I2C2EN_BIT) + #define RCC_APB1ENR_I2C1EN (1U << RCC_APB1ENR_I2C1EN_BIT) + #define RCC_APB1ENR_UART5EN (1U << RCC_APB1ENR_UART5EN_BIT) + #define RCC_APB1ENR_UART4EN (1U << RCC_APB1ENR_UART4EN_BIT) + #define RCC_APB1ENR_USART3EN (1U << RCC_APB1ENR_USART3EN_BIT) + #define RCC_APB1ENR_USART2EN (1U << RCC_APB1ENR_USART2EN_BIT) + #define RCC_APB1ENR_SPI3EN (1U << RCC_APB1ENR_SPI3EN_BIT) + #define RCC_APB1ENR_SPI2EN (1U << RCC_APB1ENR_SPI2EN_BIT) + #define RCC_APB1ENR_WWDEN (1U << RCC_APB1ENR_WWDEN_BIT) + #define RCC_APB1ENR_TIM14EN (1U << RCC_APB1ENR_TIM14EN_BIT) + #define RCC_APB1ENR_TIM13EN (1U << RCC_APB1ENR_TIM13EN_BIT) + #define RCC_APB1ENR_TIM12EN (1U << RCC_APB1ENR_TIM12EN_BIT) + #define RCC_APB1ENR_TIM7EN (1U << RCC_APB1ENR_TIM7EN_BIT) + #define RCC_APB1ENR_TIM6EN (1U << RCC_APB1ENR_TIM6EN_BIT) + #define RCC_APB1ENR_TIM5EN (1U << RCC_APB1ENR_TIM5EN_BIT) + #define RCC_APB1ENR_TIM4EN (1U << RCC_APB1ENR_TIM4EN_BIT) + #define RCC_APB1ENR_TIM3EN (1U << RCC_APB1ENR_TIM3EN_BIT) + #define RCC_APB1ENR_TIM2EN (1U << RCC_APB1ENR_TIM2EN_BIT) + +Backup domain control register +++++++++++++++++++++++++++++++ + +:: + + #define RCC_BDCR_BDRST_BIT 16 + #define RCC_BDCR_RTCEN_BIT 15 + #define RCC_BDCR_LSEBYP_BIT 2 + #define RCC_BDCR_LSERDY_BIT 1 + #define RCC_BDCR_LSEON_BIT 0 + + #define RCC_BDCR_BDRST (1U << RCC_BDCR_BDRST_BIT) + #define RCC_BDCR_RTCEN (1U << RCC_BDCR_RTC_BIT) + #define RCC_BDCR_RTCSEL (0x3 << 8) + #define RCC_BDCR_RTCSEL_NONE (0x0 << 8) + #define RCC_BDCR_RTCSEL_LSE (0x1 << 8) + #define RCC_BDCR_RTCSEL_HSE (0x3 << 8) + #define RCC_BDCR_LSEBYP (1U << RCC_BDCR_LSEBYP_BIT) + #define RCC_BDCR_LSERDY (1U << RCC_BDCR_LSERDY_BIT) + #define RCC_BDCR_LSEON (1U << RCC_BDCR_LSEON_BIT) + +Control/status register ++++++++++++++++++++++++ + +:: + + #define RCC_CSR_LPWRRSTF_BIT 31 + #define RCC_CSR_WWDGRSTF_BIT 30 + #define RCC_CSR_IWDGRSTF_BIT 29 + #define RCC_CSR_SFTRSTF_BIT 28 + #define RCC_CSR_PORRSTF_BIT 27 + #define RCC_CSR_PINRSTF_BIT 26 + #define RCC_CSR_RMVF_BIT 24 + #define RCC_CSR_LSIRDY_BIT 1 + #define RCC_CSR_LSION_BIT 0 + + #define RCC_CSR_LPWRRSTF (1U << RCC_CSR_LPWRRSTF_BIT) + #define RCC_CSR_WWDGRSTF (1U << RCC_CSR_WWDGRSTF_BIT) + #define RCC_CSR_IWDGRSTF (1U << RCC_CSR_IWDGRSTF_BIT) + #define RCC_CSR_SFTRSTF (1U << RCC_CSR_SFTRSTF_BIT) + #define RCC_CSR_PORRSTF (1U << RCC_CSR_PORRSTF_BIT) + #define RCC_CSR_PINRSTF (1U << RCC_CSR_PINRSTF_BIT) + #define RCC_CSR_RMVF (1U << RCC_CSR_RMVF_BIT) + #define RCC_CSR_LSIRDY (1U << RCC_CSR_LSIRDY_BIT) + #define RCC_CSR_LSION (1U << RCC_CSR_LSION_BIT) + +STM32F2 Targets +~~~~~~~~~~~~~~~ + +Clock control register +++++++++++++++++++++++ + +:: + + #define RCC_CR_PLLI2SRDY_BIT 27 + #define RCC_CR_PLLI2SON_BIT 26 + #define RCC_CR_PLLRDY_BIT 25 + #define RCC_CR_PLLON_BIT 24 + #define RCC_CR_CSSON_BIT 19 + #define RCC_CR_HSEBYP_BIT 18 + #define RCC_CR_HSERDY_BIT 17 + #define RCC_CR_HSEON_BIT 16 + #define RCC_CR_HSIRDY_BIT 1 + #define RCC_CR_HSION_BIT 0 + + #define RCC_CR_PLLI2SRDY (1U << RCC_CR_PLLI2SRDY_BIT) + #define RCC_CR_PLLI2SON (1U << RCC_CR_PLLI2SON_BIT) + #define RCC_CR_PLLRDY (1U << RCC_CR_PLLRDY_BIT) + #define RCC_CR_PLLON (1U << RCC_CR_PLLON_BIT) + #define RCC_CR_CSSON (1U << RCC_CR_CSSON_BIT) + #define RCC_CR_HSEBYP (1U << RCC_CR_HSEBYP_BIT) + #define RCC_CR_HSERDY (1U << RCC_CR_HSERDY_BIT) + #define RCC_CR_HSEON (1U << RCC_CR_HSEON_BIT) + #define RCC_CR_HSICAL (0xFF << 8) + #define RCC_CR_HSITRIM (0x1F << 3) + #define RCC_CR_HSIRDY (1U << RCC_CR_HSIRDY_BIT) + #define RCC_CR_HSION (1U << RCC_CR_HSION_BIT) + +PLL configuration register +++++++++++++++++++++++++++ + +:: + + #define RCC_PLLCFGR_PLLSRC_BIT 22 + + #define RCC_PLLCFGR_PLLQ (0xF << 24) + #define RCC_PLLCFGR_PLLSRC (1U << RCC_PLLCFGR_PLLSRC_BIT) + #define RCC_PLLCFGR_PLLSRC_HSI (0x0 << RCC_PLLCFGR_PLLSRC_BIT) + #define RCC_PLLCFGR_PLLSRC_HSE (0x1 << RCC_PLLCFGR_PLLSRC_BIT) + #define RCC_PLLCFGR_PLLP (0x3 << 16) + #define RCC_PLLCFGR_PLLN (0x1FF << 6) + #define RCC_PLLCFGR_PLLM 0x1F + +Clock configuration register +++++++++++++++++++++++++++++ + +:: + + #define RCC_CFGR_I2SSRC_BIT 23 + + #define RCC_CFGR_MCO2 (0x3 << 30) + #define RCC_CFGR_MCO2_SYSCLK (0x0 << 30) + #define RCC_CFGR_MCO2_PLLI2S (0x1 << 30) + #define RCC_CFGR_MCO2_HSE (0x2 << 30) + #define RCC_CFGR_MCO2_PLL (0x3 << 30) + + #define RCC_CFGR_MCO2PRE (0x7 << 27) + #define RCC_CFGR_MCO2PRE_DIV_1 (0x0 << 27) + #define RCC_CFGR_MCO2PRE_DIV_2 (0x4 << 27) + #define RCC_CFGR_MCO2PRE_DIV_3 (0x5 << 27) + #define RCC_CFGR_MCO2PRE_DIV_4 (0x6 << 27) + #define RCC_CFGR_MCO2PRE_DIV_5 (0x7 << 27) + + #define RCC_CFGR_MCO1PRE (0x7 << 24) + #define RCC_CFGR_MCO1PRE_DIV_1 (0x0 << 24) + #define RCC_CFGR_MCO1PRE_DIV_2 (0x4 << 24) + #define RCC_CFGR_MCO1PRE_DIV_3 (0x5 << 24) + #define RCC_CFGR_MCO1PRE_DIV_4 (0x6 << 24) + #define RCC_CFGR_MCO1PRE_DIV_5 (0x7 << 24) + + #define RCC_CFGR_I2SSRC (1U << RCC_CFGR_I2SSRC_BIT) + #define RCC_CFGR_I2SSRC_PLLI2S (0 << RCC_CFGR_I2SSRC_BIT) + #define RCC_CFGR_I2SSRC_I2S_CKIN (1 << RCC_CFGR_I2SSRC_BIT) + + #define RCC_CFGR_MCO1 (0x3 << 21) + #define RCC_CFGR_MCO1_HSI (0x0 << 21) + #define RCC_CFGR_MCO1_LSE (0x1 << 21) + #define RCC_CFGR_MCO1_HSE (0x2 << 21) + #define RCC_CFGR_MCO1_PLL (0x3 << 21) + + #define RCC_CFGR_RTCPRE (0x1F << 16) + + /* Skipped: all the 0b0xx values meaning "not divided" */ + #define RCC_CFGR_PPRE2 (0x7 << 13) + #define RCC_CFGR_PPRE2_AHB_DIV_2 (0x4 << 13) + #define RCC_CFGR_PPRE2_AHB_DIV_4 (0x5 << 13) + #define RCC_CFGR_PPRE2_AHB_DIV_8 (0x6 << 13) + #define RCC_CFGR_PPRE2_AHB_DIV_16 (0x7 << 13) + + /* Skipped: all the 0b0xx values meaning "not divided" */ + #define RCC_CFGR_PPRE1 (0x7 << 10) + #define RCC_CFGR_PPRE1_AHB_DIV_2 (0x4 << 10) + #define RCC_CFGR_PPRE1_AHB_DIV_4 (0x5 << 10) + #define RCC_CFGR_PPRE1_AHB_DIV_8 (0x6 << 10) + #define RCC_CFGR_PPRE1_AHB_DIV_16 (0x7 << 10) + + /* Skipped: all the 0b0xxx values meaning "not divided" */ + #define RCC_CFGR_HPRE (0xF << 4) + #define RCC_CFGR_HPRE_SYSCLK_DIV_2 (0x8 << 4) + #define RCC_CFGR_HPRE_SYSCLK_DIV_4 (0x9 << 4) + #define RCC_CFGR_HPRE_SYSCLK_DIV_8 (0xA << 4) + #define RCC_CFGR_HPRE_SYSCLK_DIV_16 (0xB << 4) + #define RCC_CFGR_HPRE_SYSCLK_DIV_64 (0xC << 4) + #define RCC_CFGR_HPRE_SYSCLK_DIV_128 (0xD << 4) + #define RCC_CFGR_HPRE_SYSCLK_DIV_256 (0xE << 4) + #define RCC_CFGR_HPRE_SYSCLK_DIV_512 (0xF << 4) + + #define RCC_CFGR_SWS (0x3 << 2) + #define RCC_CFGR_SWS_HSI (0x0 << 2) + #define RCC_CFGR_SWS_HSE (0x1 << 2) + #define RCC_CFGR_SWS_PLL (0x2 << 2) + + #define RCC_CFGR_SW 0x3 + #define RCC_CFGR_SW_HSI 0x0 + #define RCC_CFGR_SW_HSE 0x1 + #define RCC_CFGR_SW_PLL 0x2 + +Clock interrupt register +++++++++++++++++++++++++ + +:: + + #define RCC_CIR_CSSC_BIT 23 + + #define RCC_CIR_PLLI2SRDYC_BIT 21 + #define RCC_CIR_PLLRDYC_BIT 20 + #define RCC_CIR_HSERDYC_BIT 19 + #define RCC_CIR_HSIRDYC_BIT 18 + #define RCC_CIR_LSERDYC_BIT 17 + #define RCC_CIR_LSIRDYC_BIT 16 + + #define RCC_CIR_PLLI2SRDYIE_BIT 13 + #define RCC_CIR_PLLRDYIE_BIT 12 + #define RCC_CIR_HSERDYIE_BIT 11 + #define RCC_CIR_HSIRDYIE_BIT 10 + #define RCC_CIR_LSERDYIE_BIT 9 + #define RCC_CIR_LSIRDYIE_BIT 8 + + #define RCC_CIR_CSSF_BIT 7 + + #define RCC_CIR_PLLI2SRDYF_BIT 5 + #define RCC_CIR_PLLRDYF_BIT 4 + #define RCC_CIR_HSERDYF_BIT 3 + #define RCC_CIR_HSIRDYF_BIT 2 + #define RCC_CIR_LSERDYF_BIT 1 + #define RCC_CIR_LSIRDYF_BIT 0 + + #define RCC_CIR_CSSC (1U << RCC_CIR_CSSC_BIT) + + #define RCC_CIR_PLLI2SRDYC (1U << RCC_CIR_PLLI2SRDYC_BIT) + #define RCC_CIR_PLLRDYC (1U << RCC_CIR_PLLRDYC_BIT) + #define RCC_CIR_HSERDYC (1U << RCC_CIR_HSERDYC_BIT) + #define RCC_CIR_HSIRDYC (1U << RCC_CIR_HSIRDYC_BIT) + #define RCC_CIR_LSERDYC (1U << RCC_CIR_LSERDYC_BIT) + #define RCC_CIR_LSIRDYC (1U << RCC_CIR_LSIRDYC_BIT) + + #define RCC_CIR_PLLI2SRDYIE (1U << RCC_CIR_PLLI2SRDYIE_BIT) + #define RCC_CIR_PLLRDYIE (1U << RCC_CIR_PLLRDYIE_BIT) + #define RCC_CIR_HSERDYIE (1U << RCC_CIR_HSERDYIE_BIT) + #define RCC_CIR_HSIRDYIE (1U << RCC_CIR_HSIRDYIE_BIT) + #define RCC_CIR_LSERDYIE (1U << RCC_CIR_LSERDYIE_BIT) + #define RCC_CIR_LSIRDYIE (1U << RCC_CIR_LSIRDYIE_BIT) + + #define RCC_CIR_CSSF (1U << RCC_CIR_CSSF_BIT) + + #define RCC_CIR_PLLI2SRDYF (1U << RCC_CIR_PLLI2SRDYF_BIT) + #define RCC_CIR_PLLRDYF (1U << RCC_CIR_PLLRDYF_BIT) + #define RCC_CIR_HSERDYF (1U << RCC_CIR_HSERDYF_BIT) + #define RCC_CIR_HSIRDYF (1U << RCC_CIR_HSIRDYF_BIT) + #define RCC_CIR_LSERDYF (1U << RCC_CIR_LSERDYF_BIT) + #define RCC_CIR_LSIRDYF (1U << RCC_CIR_LSIRDYF_BIT) + +Peripheral reset registers +++++++++++++++++++++++++++ + +:: + + /* AHB1 */ + + #define RCC_AHB1RSTR_OTGHSRST_BIT 29 + #define RCC_AHB1RSTR_ETHMACRST_BIT 25 + #define RCC_AHB1RSTR_DMA2RST_BIT 22 + #define RCC_AHB1RSTR_DMA1RST_BIT 21 + #define RCC_AHB1RSTR_CRCRST_BIT 12 + #define RCC_AHB1RSTR_GPIOIRST_BIT 8 + #define RCC_AHB1RSTR_GPIOHRST_BIT 7 + #define RCC_AHB1RSTR_GPIOGRST_BIT 6 + #define RCC_AHB1RSTR_GPIOFRST_BIT 5 + #define RCC_AHB1RSTR_GPIOERST_BIT 4 + #define RCC_AHB1RSTR_GPIODRST_BIT 3 + #define RCC_AHB1RSTR_GPIOCRST_BIT 2 + #define RCC_AHB1RSTR_GPIOBRST_BIT 1 + #define RCC_AHB1RSTR_GPIOARST_BIT 0 + + #define RCC_AHB1RSTR_OTGHSRST (1U << RCC_AHB1RSTR_OTGHSRST_BIT) + #define RCC_AHB1RSTR_ETHMACRST (1U << RCC_AHB1RSTR_ETHMACRST_BIT) + #define RCC_AHB1RSTR_DMA2RST (1U << RCC_AHB1RSTR_DMA2RST_BIT) + #define RCC_AHB1RSTR_DMA1RST (1U << RCC_AHB1RSTR_DMA1RST_BIT) + #define RCC_AHB1RSTR_CRCRST (1U << RCC_AHB1RSTR_CRCRST_BIT) + #define RCC_AHB1RSTR_GPIOIRST (1U << RCC_AHB1RSTR_GPIOIRST_BIT) + #define RCC_AHB1RSTR_GPIOHRST (1U << RCC_AHB1RSTR_GPIOHRST_BIT) + #define RCC_AHB1RSTR_GPIOGRST (1U << RCC_AHB1RSTR_GPIOGRST_BIT) + #define RCC_AHB1RSTR_GPIOFRST (1U << RCC_AHB1RSTR_GPIOFRST_BIT) + #define RCC_AHB1RSTR_GPIOERST (1U << RCC_AHB1RSTR_GPIOERST_BIT) + #define RCC_AHB1RSTR_GPIODRST (1U << RCC_AHB1RSTR_GPIODRST_BIT) + #define RCC_AHB1RSTR_GPIOCRST (1U << RCC_AHB1RSTR_GPIOCRST_BIT) + #define RCC_AHB1RSTR_GPIOBRST (1U << RCC_AHB1RSTR_GPIOBRST_BIT) + #define RCC_AHB1RSTR_GPIOARST (1U << RCC_AHB1RSTR_GPIOARST_BIT) + + /* AHB2 */ + + #define RCC_AHB2RSTR_OTGFSRST_BIT 7 + #define RCC_AHB2RSTR_RNGRST_BIT 6 + #define RCC_AHB2RSTR_HASHRST_BIT 5 + #define RCC_AHB2RSTR_CRYPRST_BIT 4 + #define RCC_AHB2RSTR_DCMIRST_BIT 0 + + #define RCC_AHB2RSTR_OTGFSRST (1U << RCC_AHB2RSTR_OTGFSRST_BIT) + #define RCC_AHB2RSTR_RNGRST (1U << RCC_AHB2RSTR_RNGRST_BIT) + #define RCC_AHB2RSTR_HASHRST (1U << RCC_AHB2RSTR_HASHRST_BIT) + #define RCC_AHB2RSTR_CRYPRST (1U << RCC_AHB2RSTR_CRYPRST_BIT) + #define RCC_AHB2RSTR_DCMIRST (1U << RCC_AHB2RSTR_DCMIRST_BIT) + + /* AHB3 */ + + #define RCC_AHB3RSTR_FSMCRST_BIT 0 + + #define RCC_AHB3RSTR_FSMCRST (1U << RCC_AHB3RSTR_FSMCRST_BIT) + + /* APB1 */ + + #define RCC_APB1RSTR_DACRST_BIT 29 + #define RCC_APB1RSTR_PWRRST_BIT 28 + #define RCC_APB1RSTR_CAN2RST_BIT 26 + #define RCC_APB1RSTR_CAN1RST_BIT 25 + #define RCC_APB1RSTR_I2C3RST_BIT 23 + #define RCC_APB1RSTR_I2C2RST_BIT 22 + #define RCC_APB1RSTR_I2C1RST_BIT 21 + #define RCC_APB1RSTR_UART5RST_BIT 20 + #define RCC_APB1RSTR_UART4RST_BIT 19 + #define RCC_APB1RSTR_UART3RST_BIT 18 + #define RCC_APB1RSTR_UART2RST_BIT 17 + #define RCC_APB1RSTR_SPI3RST_BIT 15 + #define RCC_APB1RSTR_SPI2RST_BIT 14 + #define RCC_APB1RSTR_WWDGRST_BIT 11 + #define RCC_APB1RSTR_TIM14RST_BIT 8 + #define RCC_APB1RSTR_TIM13RST_BIT 7 + #define RCC_APB1RSTR_TIM12RST_BIT 6 + #define RCC_APB1RSTR_TIM7RST_BIT 5 + #define RCC_APB1RSTR_TIM6RST_BIT 4 + #define RCC_APB1RSTR_TIM5RST_BIT 3 + #define RCC_APB1RSTR_TIM4RST_BIT 2 + #define RCC_APB1RSTR_TIM3RST_BIT 1 + #define RCC_APB1RSTR_TIM2RST_BIT 0 + + #define RCC_APB1RSTR_DACRST (1U << RCC_APB1RSTR_DACRST_BIT) + #define RCC_APB1RSTR_PWRRST (1U << RCC_APB1RSTR_PWRRST_BIT) + #define RCC_APB1RSTR_CAN2RST (1U << RCC_APB1RSTR_CAN2RST_BIT) + #define RCC_APB1RSTR_CAN1RST (1U << RCC_APB1RSTR_CAN1RST_BIT) + #define RCC_APB1RSTR_I2C3RST (1U << RCC_APB1RSTR_I2C3RST_BIT) + #define RCC_APB1RSTR_I2C2RST (1U << RCC_APB1RSTR_I2C2RST_BIT) + #define RCC_APB1RSTR_I2C1RST (1U << RCC_APB1RSTR_I2C1RST_BIT) + #define RCC_APB1RSTR_UART5RST (1U << RCC_APB1RSTR_UART5RST_BIT) + #define RCC_APB1RSTR_UART4RST (1U << RCC_APB1RSTR_UART4RST_BIT) + #define RCC_APB1RSTR_UART3RST (1U << RCC_APB1RSTR_UART3RST_BIT) + #define RCC_APB1RSTR_UART2RST (1U << RCC_APB1RSTR_UART2RST_BIT) + #define RCC_APB1RSTR_SPI3RST (1U << RCC_APB1RSTR_SPI3RST_BIT) + #define RCC_APB1RSTR_SPI2RST (1U << RCC_APB1RSTR_SPI2RST_BIT) + #define RCC_APB1RSTR_WWDGRST (1U << RCC_APB1RSTR_WWDGRST_BIT) + #define RCC_APB1RSTR_TIM14RST (1U << RCC_APB1RSTR_TIM14RST_BIT) + #define RCC_APB1RSTR_TIM13RST (1U << RCC_APB1RSTR_TIM13RST_BIT) + #define RCC_APB1RSTR_TIM12RST (1U << RCC_APB1RSTR_TIM12RST_BIT) + #define RCC_APB1RSTR_TIM7RST (1U << RCC_APB1RSTR_TIM7RST_BIT) + #define RCC_APB1RSTR_TIM6RST (1U << RCC_APB1RSTR_TIM6RST_BIT) + #define RCC_APB1RSTR_TIM5RST (1U << RCC_APB1RSTR_TIM5RST_BIT) + #define RCC_APB1RSTR_TIM4RST (1U << RCC_APB1RSTR_TIM4RST_BIT) + #define RCC_APB1RSTR_TIM3RST (1U << RCC_APB1RSTR_TIM3RST_BIT) + #define RCC_APB1RSTR_TIM2RST (1U << RCC_APB1RSTR_TIM2RST_BIT) + + /* APB2 */ + + #define RCC_APB2RSTR_TIM11RST_BIT 18 + #define RCC_APB2RSTR_TIM10RST_BIT 17 + #define RCC_APB2RSTR_TIM9RST_BIT 16 + #define RCC_APB2RSTR_SYSCFGRST_BIT 14 + #define RCC_APB2RSTR_SPI1RST_BIT 12 + #define RCC_APB2RSTR_SDIORST_BIT 11 + #define RCC_APB2RSTR_ADCRST_BIT 8 + #define RCC_APB2RSTR_USART6RST_BIT 5 + #define RCC_APB2RSTR_USART1RST_BIT 4 + #define RCC_APB2RSTR_TIM8RST_BIT 1 + #define RCC_APB2RSTR_TIM1RST_BIT 0 + + #define RCC_APB2RSTR_TIM11RST (1U << RCC_APB2RSTR_TIM11RST_BIT) + #define RCC_APB2RSTR_TIM10RST (1U << RCC_APB2RSTR_TIM10RST_BIT) + #define RCC_APB2RSTR_TIM9RST (1U << RCC_APB2RSTR_TIM9RST_BIT) + #define RCC_APB2RSTR_SYSCFGRST (1U << RCC_APB2RSTR_SYSCFGRST_BIT) + #define RCC_APB2RSTR_SPI1RST (1U << RCC_APB2RSTR_SPI1RST_BIT) + #define RCC_APB2RSTR_SDIORST (1U << RCC_APB2RSTR_SDIORST_BIT) + #define RCC_APB2RSTR_ADCRST (1U << RCC_APB2RSTR_ADCRST_BIT) + #define RCC_APB2RSTR_USART6RST (1U << RCC_APB2RSTR_USART6RST_BIT) + #define RCC_APB2RSTR_USART1RST (1U << RCC_APB2RSTR_USART1RST_BIT) + #define RCC_APB2RSTR_TIM8RST (1U << RCC_APB2RSTR_TIM8RST_BIT) + #define RCC_APB2RSTR_TIM1RST (1U << RCC_APB2RSTR_TIM1RST_BIT) + +Peripheral clock enable registers ++++++++++++++++++++++++++++++++++ + +:: + + /* AHB1 */ + + #define RCC_AHB1ENR_OTGHSULPIEN_BIT 30 + #define RCC_AHB1ENR_OTGHSEN_BIT 29 + #define RCC_AHB1ENR_ETHMACPTPEN_BIT 28 + #define RCC_AHB1ENR_ETHMACRXEN_BIT 27 + #define RCC_AHB1ENR_ETHMACTXEN_BIT 26 + #define RCC_AHB1ENR_ETHMACEN_BIT 25 + #define RCC_AHB1ENR_DMA2EN_BIT 22 + #define RCC_AHB1ENR_DMA1EN_BIT 21 + #define RCC_AHB1ENR_BKPSRAMEN_BIT 18 + #define RCC_AHB1ENR_CRCEN_BIT 12 + #define RCC_AHB1ENR_GPIOIEN_BIT 8 + #define RCC_AHB1ENR_GPIOHEN_BIT 7 + #define RCC_AHB1ENR_GPIOGEN_BIT 6 + #define RCC_AHB1ENR_GPIOFEN_BIT 5 + #define RCC_AHB1ENR_GPIOEEN_BIT 4 + #define RCC_AHB1ENR_GPIODEN_BIT 3 + #define RCC_AHB1ENR_GPIOCEN_BIT 2 + #define RCC_AHB1ENR_GPIOBEN_BIT 1 + #define RCC_AHB1ENR_GPIOAEN_BIT 0 + + #define RCC_AHB1ENR_OTGHSULPIEN (1U << RCC_AHB1ENR_OTGHSULPIEN_BIT) + #define RCC_AHB1ENR_OTGHSEN (1U << RCC_AHB1ENR_OTGHSEN_BIT) + #define RCC_AHB1ENR_ETHMACPTPEN (1U << RCC_AHB1ENR_ETHMACPTPEN_BIT) + #define RCC_AHB1ENR_ETHMACRXEN (1U << RCC_AHB1ENR_ETHMACRXEN_BIT) + #define RCC_AHB1ENR_ETHMACTXEN (1U << RCC_AHB1ENR_ETHMACTXEN_BIT) + #define RCC_AHB1ENR_ETHMACEN (1U << RCC_AHB1ENR_ETHMACEN_BIT) + #define RCC_AHB1ENR_DMA2EN (1U << RCC_AHB1ENR_DMA2EN_BIT) + #define RCC_AHB1ENR_DMA1EN (1U << RCC_AHB1ENR_DMA1EN_BIT) + #define RCC_AHB1ENR_BKPSRAMEN (1U << RCC_AHB1ENR_BKPSRAMEN_BIT) + #define RCC_AHB1ENR_CRCEN (1U << RCC_AHB1ENR_CRCEN_BIT) + #define RCC_AHB1ENR_GPIOIEN (1U << RCC_AHB1ENR_GPIOIEN_BIT) + #define RCC_AHB1ENR_GPIOHEN (1U << RCC_AHB1ENR_GPIOHEN_BIT) + #define RCC_AHB1ENR_GPIOGEN (1U << RCC_AHB1ENR_GPIOGEN_BIT) + #define RCC_AHB1ENR_GPIOFEN (1U << RCC_AHB1ENR_GPIOFEN_BIT) + #define RCC_AHB1ENR_GPIOEEN (1U << RCC_AHB1ENR_GPIOEEN_BIT) + #define RCC_AHB1ENR_GPIODEN (1U << RCC_AHB1ENR_GPIODEN_BIT) + #define RCC_AHB1ENR_GPIOCEN (1U << RCC_AHB1ENR_GPIOCEN_BIT) + #define RCC_AHB1ENR_GPIOBEN (1U << RCC_AHB1ENR_GPIOBEN_BIT) + #define RCC_AHB1ENR_GPIOAEN (1U << RCC_AHB1ENR_GPIOAEN_BIT) + + /* AHB2 */ + + #define RCC_AHB2ENR_OTGFSEN_BIT 7 + #define RCC_AHB2ENR_RNGEN_BIT 6 + #define RCC_AHB2ENR_HASHEN_BIT 5 + #define RCC_AHB2ENR_CRYPEN_BIT 4 + #define RCC_AHB2ENR_DCMIEN_BIT 0 + + #define RCC_AHB2ENR_OTGFSEN (1U << RCC_AHB2ENR_OTGFSEN_BIT) + #define RCC_AHB2ENR_RNGEN (1U << RCC_AHB2ENR_RNGEN_BIT) + #define RCC_AHB2ENR_HASHEN (1U << RCC_AHB2ENR_HASHEN_BIT) + #define RCC_AHB2ENR_CRYPEN (1U << RCC_AHB2ENR_CRYPEN_BIT) + #define RCC_AHB2ENR_DCMIEN (1U << RCC_AHB2ENR_DCMIEN_BIT) + + /* AHB3 */ + + #define RCC_AHB3ENR_FSMCEN_BIT 0 + + #define RCC_AHB3ENR_FSMCEN (1U << RCC_AHB3ENR_FSMCEN_BIT) + + /* APB1 */ + + #define RCC_APB1ENR_DACEN_BIT 29 + #define RCC_APB1ENR_PWREN_BIT 28 + #define RCC_APB1ENR_CAN2EN_BIT 26 + #define RCC_APB1ENR_CAN1EN_BIT 25 + #define RCC_APB1ENR_I2C3EN_BIT 23 + #define RCC_APB1ENR_I2C2EN_BIT 22 + #define RCC_APB1ENR_I2C1EN_BIT 21 + #define RCC_APB1ENR_UART5EN_BIT 20 + #define RCC_APB1ENR_UART4EN_BIT 19 + #define RCC_APB1ENR_USART3EN_BIT 18 + #define RCC_APB1ENR_USART2EN_BIT 17 + #define RCC_APB1ENR_SPI3EN_BIT 15 + #define RCC_APB1ENR_SPI2EN_BIT 14 + #define RCC_APB1ENR_WWDGEN_BIT 11 + #define RCC_APB1ENR_TIM14EN_BIT 8 + #define RCC_APB1ENR_TIM13EN_BIT 7 + #define RCC_APB1ENR_TIM12EN_BIT 6 + #define RCC_APB1ENR_TIM7EN_BIT 5 + #define RCC_APB1ENR_TIM6EN_BIT 4 + #define RCC_APB1ENR_TIM5EN_BIT 3 + #define RCC_APB1ENR_TIM4EN_BIT 2 + #define RCC_APB1ENR_TIM3EN_BIT 1 + #define RCC_APB1ENR_TIM2EN_BIT 0 + + #define RCC_APB1ENR_DACEN (1U << RCC_APB1ENR_DACEN_BIT) + #define RCC_APB1ENR_PWREN (1U << RCC_APB1ENR_PWREN_BIT) + #define RCC_APB1ENR_CAN2EN (1U << RCC_APB1ENR_CAN2EN_BIT) + #define RCC_APB1ENR_CAN1EN (1U << RCC_APB1ENR_CAN1EN_BIT) + #define RCC_APB1ENR_I2C3EN (1U << RCC_APB1ENR_I2C3EN_BIT) + #define RCC_APB1ENR_I2C2EN (1U << RCC_APB1ENR_I2C2EN_BIT) + #define RCC_APB1ENR_I2C1EN (1U << RCC_APB1ENR_I2C1EN_BIT) + #define RCC_APB1ENR_UART5EN (1U << RCC_APB1ENR_UART5EN_BIT) + #define RCC_APB1ENR_UART4EN (1U << RCC_APB1ENR_UART4EN_BIT) + #define RCC_APB1ENR_USART3EN (1U << RCC_APB1ENR_USART3EN_BIT) + #define RCC_APB1ENR_USART2EN (1U << RCC_APB1ENR_USART2EN_BIT) + #define RCC_APB1ENR_SPI3EN (1U << RCC_APB1ENR_SPI3EN_BIT) + #define RCC_APB1ENR_SPI2EN (1U << RCC_APB1ENR_SPI2EN_BIT) + #define RCC_APB1ENR_WWDGEN (1U << RCC_APB1ENR_WWDGEN_BIT) + #define RCC_APB1ENR_TIM14EN (1U << RCC_APB1ENR_TIM14EN_BIT) + #define RCC_APB1ENR_TIM13EN (1U << RCC_APB1ENR_TIM13EN_BIT) + #define RCC_APB1ENR_TIM12EN (1U << RCC_APB1ENR_TIM12EN_BIT) + #define RCC_APB1ENR_TIM7EN (1U << RCC_APB1ENR_TIM7EN_BIT) + #define RCC_APB1ENR_TIM6EN (1U << RCC_APB1ENR_TIM6EN_BIT) + #define RCC_APB1ENR_TIM5EN (1U << RCC_APB1ENR_TIM5EN_BIT) + #define RCC_APB1ENR_TIM4EN (1U << RCC_APB1ENR_TIM4EN_BIT) + #define RCC_APB1ENR_TIM3EN (1U << RCC_APB1ENR_TIM3EN_BIT) + #define RCC_APB1ENR_TIM2EN (1U << RCC_APB1ENR_TIM2EN_BIT) + + /* APB2 */ + + #define RCC_APB2ENR_TIM11EN_BIT 18 + #define RCC_APB2ENR_TIM10EN_BIT 17 + #define RCC_APB2ENR_TIM9EN_BIT 16 + #define RCC_APB2ENR_SYSCFGEN_BIT 14 + #define RCC_APB2ENR_SPI1EN_BIT 12 + #define RCC_APB2ENR_SDIOEN_BIT 11 + #define RCC_APB2ENR_ADC3EN_BIT 10 + #define RCC_APB2ENR_ADC2EN_BIT 9 + #define RCC_APB2ENR_ADC1EN_BIT 8 + #define RCC_APB2ENR_USART6EN_BIT 5 + #define RCC_APB2ENR_USART1EN_BIT 4 + #define RCC_APB2ENR_TIM8EN_BIT 1 + #define RCC_APB2ENR_TIM1EN_BIT 0 + + #define RCC_APB2ENR_TIM11EN (1U << RCC_APB2ENR_TIM11EN_BIT) + #define RCC_APB2ENR_TIM10EN (1U << RCC_APB2ENR_TIM10EN_BIT) + #define RCC_APB2ENR_TIM9EN (1U << RCC_APB2ENR_TIM9EN_BIT) + #define RCC_APB2ENR_SYSCFGEN (1U << RCC_APB2ENR_SYSCFGEN_BIT) + #define RCC_APB2ENR_SPI1EN (1U << RCC_APB2ENR_SPI1EN_BIT) + #define RCC_APB2ENR_SDIOEN (1U << RCC_APB2ENR_SDIOEN_BIT) + #define RCC_APB2ENR_ADC3EN (1U << RCC_APB2ENR_ADC3EN_BIT) + #define RCC_APB2ENR_ADC2EN (1U << RCC_APB2ENR_ADC2EN_BIT) + #define RCC_APB2ENR_ADC1EN (1U << RCC_APB2ENR_ADC1EN_BIT) + #define RCC_APB2ENR_USART6EN (1U << RCC_APB2ENR_USART6EN_BIT) + #define RCC_APB2ENR_USART1EN (1U << RCC_APB2ENR_USART1EN_BIT) + #define RCC_APB2ENR_TIM8EN (1U << RCC_APB2ENR_TIM8EN_BIT) + #define RCC_APB2ENR_TIM1EN (1U << RCC_APB2ENR_TIM1EN_BIT) + +Peripheral clock enable in low power mode registers ++++++++++++++++++++++++++++++++++++++++++++++++++++ + +:: + + /* AHB1 */ + + #define RCC_AHB1LPENR_OTGHSULPILPEN_BIT 30 + #define RCC_AHB1LPENR_OTGHSLPEN_BIT 29 + #define RCC_AHB1LPENR_ETHMACPTPLPEN_BIT 28 + #define RCC_AHB1LPENR_ETHMACRXLPEN_BIT 27 + #define RCC_AHB1LPENR_ETHMACTXLPEN_BIT 26 + #define RCC_AHB1LPENR_ETHMACLPEN_BIT 25 + #define RCC_AHB1LPENR_DMA2LPEN_BIT 22 + #define RCC_AHB1LPENR_DMA1LPEN_BIT 21 + #define RCC_AHB1LPENR_BKPSRAMLPEN_BIT 18 + #define RCC_AHB1LPENR_SRAM2LPEN_BIT 17 + #define RCC_AHB1LPENR_SRAM1LPEN_BIT 16 + #define RCC_AHB1LPENR_FLITFLPEN_BIT 15 + #define RCC_AHB1LPENR_CRCLPEN_BIT 12 + #define RCC_AHB1LPENR_GPIOILPEN_BIT 8 + #define RCC_AHB1LPENR_GPIOGLPEN_BIT 6 + #define RCC_AHB1LPENR_GPIOFLPEN_BIT 5 + #define RCC_AHB1LPENR_GPIOELPEN_BIT 4 + #define RCC_AHB1LPENR_GPIODLPEN_BIT 3 + #define RCC_AHB1LPENR_GPIOCLPEN_BIT 2 + #define RCC_AHB1LPENR_GPIOBLPEN_BIT 1 + #define RCC_AHB1LPENR_GPIOALPEN_BIT 0 + + #define RCC_AHB1LPENR_OTGHSULPILPEN (1U << RCC_AHB1LPENR_OTGHSULPILPEN_BIT) + #define RCC_AHB1LPENR_OTGHSLPEN (1U << RCC_AHB1LPENR_OTGHSLPEN_BIT) + #define RCC_AHB1LPENR_ETHMACPTPLPEN (1U << RCC_AHB1LPENR_ETHMACPTPLPEN_BIT) + #define RCC_AHB1LPENR_ETHMACRXLPEN (1U << RCC_AHB1LPENR_ETHMACRXLPEN_BIT) + #define RCC_AHB1LPENR_ETHMACTXLPEN (1U << RCC_AHB1LPENR_ETHMACTXLPEN_BIT) + #define RCC_AHB1LPENR_ETHMACLPEN (1U << RCC_AHB1LPENR_ETHMACLPEN_BIT) + #define RCC_AHB1LPENR_DMA2LPEN (1U << RCC_AHB1LPENR_DMA2LPEN_BIT) + #define RCC_AHB1LPENR_DMA1LPEN (1U << RCC_AHB1LPENR_DMA1LPEN_BIT) + #define RCC_AHB1LPENR_BKPSRAMLPEN (1U << RCC_AHB1LPENR_BKPSRAMLPEN_BIT) + #define RCC_AHB1LPENR_SRAM2LPEN (1U << RCC_AHB1LPENR_SRAM2LPEN_BIT) + #define RCC_AHB1LPENR_SRAM1LPEN (1U << RCC_AHB1LPENR_SRAM1LPEN_BIT) + #define RCC_AHB1LPENR_FLITFLPEN (1U << RCC_AHB1LPENR_FLITFLPEN_BIT) + #define RCC_AHB1LPENR_CRCLPEN (1U << RCC_AHB1LPENR_CRCLPEN_BIT) + #define RCC_AHB1LPENR_GPIOILPEN (1U << RCC_AHB1LPENR_GPIOILPEN_BIT) + #define RCC_AHB1LPENR_GPIOGLPEN (1U << RCC_AHB1LPENR_GPIOGLPEN_BIT) + #define RCC_AHB1LPENR_GPIOFLPEN (1U << RCC_AHB1LPENR_GPIOFLPEN_BIT) + #define RCC_AHB1LPENR_GPIOELPEN (1U << RCC_AHB1LPENR_GPIOELPEN_BIT) + #define RCC_AHB1LPENR_GPIODLPEN (1U << RCC_AHB1LPENR_GPIODLPEN_BIT) + #define RCC_AHB1LPENR_GPIOCLPEN (1U << RCC_AHB1LPENR_GPIOCLPEN_BIT) + #define RCC_AHB1LPENR_GPIOBLPEN (1U << RCC_AHB1LPENR_GPIOBLPEN_BIT) + #define RCC_AHB1LPENR_GPIOALPEN (1U << RCC_AHB1LPENR_GPIOALPEN_BIT) + + /* AHB2 */ + + #define RCC_AHB2LPENR_OTGFSLPEN_BIT 7 + #define RCC_AHB2LPENR_RNGLPEN_BIT 6 + #define RCC_AHB2LPENR_HASHLPEN_BIT 5 + #define RCC_AHB2LPENR_CRYPLPEN_BIT 4 + #define RCC_AHB2LPENR_DCMILPEN_BIT 0 + + #define RCC_AHB2LPENR_OTGFSLPEN (1U << RCC_AHB2LPENR_OTGFSLPEN_BIT) + #define RCC_AHB2LPENR_RNGLPEN (1U << RCC_AHB2LPENR_RNGLPEN_BIT) + #define RCC_AHB2LPENR_HASHLPEN (1U << RCC_AHB2LPENR_HASHLPEN_BIT) + #define RCC_AHB2LPENR_CRYPLPEN (1U << RCC_AHB2LPENR_CRYPLPEN_BIT) + #define RCC_AHB2LPENR_DCMILPEN (1U << RCC_AHB2LPENR_DCMILPEN_BIT) + + /* AHB3 */ + + #define RCC_AHB3LPENR_FSMCLPEN_BIT 0 + + #define RCC_AHB3LPENR_FSMCLPEN (1U << RCC_AHB3LPENR_FSMCLPEN_BIT) + + /* APB1 */ + + #define RCC_APB1LPENR_DACLPEN_BIT 29 + #define RCC_APB1LPENR_PWRLPEN_BIT 28 + #define RCC_APB1LPENR_CAN2LPEN_BIT 26 + #define RCC_APB1LPENR_CAN1LPEN_BIT 25 + #define RCC_APB1LPENR_I2C3LPEN_BIT 23 + #define RCC_APB1LPENR_I2C2LPEN_BIT 22 + #define RCC_APB1LPENR_I2C1LPEN_BIT 21 + #define RCC_APB1LPENR_UART5LPEN_BIT 20 + #define RCC_APB1LPENR_UART4LPEN_BIT 19 + #define RCC_APB1LPENR_USART3LPEN_BIT 18 + #define RCC_APB1LPENR_USART2LPEN_BIT 17 + #define RCC_APB1LPENR_SPI3LPEN_BIT 15 + #define RCC_APB1LPENR_SPI2LPEN_BIT 14 + #define RCC_APB1LPENR_WWDGLPEN_BIT 11 + #define RCC_APB1LPENR_TIM14LPEN_BIT 8 + #define RCC_APB1LPENR_TIM13LPEN_BIT 7 + #define RCC_APB1LPENR_TIM12LPEN_BIT 6 + #define RCC_APB1LPENR_TIM7LPEN_BIT 5 + #define RCC_APB1LPENR_TIM6LPEN_BIT 4 + #define RCC_APB1LPENR_TIM5LPEN_BIT 3 + #define RCC_APB1LPENR_TIM4LPEN_BIT 2 + #define RCC_APB1LPENR_TIM3LPEN_BIT 1 + #define RCC_APB1LPENR_TIM2LPEN_BIT 0 + + #define RCC_APB1LPENR_DACLPEN (1U << RCC_APB1LPENR_DACLPEN_BIT) + #define RCC_APB1LPENR_PWRLPEN (1U << RCC_APB1LPENR_PWRLPEN_BIT) + #define RCC_APB1LPENR_CAN2LPEN (1U << RCC_APB1LPENR_CAN2LPEN_BIT) + #define RCC_APB1LPENR_CAN1LPEN (1U << RCC_APB1LPENR_CAN1LPEN_BIT) + #define RCC_APB1LPENR_I2C3LPEN (1U << RCC_APB1LPENR_I2C3LPEN_BIT) + #define RCC_APB1LPENR_I2C2LPEN (1U << RCC_APB1LPENR_I2C2LPEN_BIT) + #define RCC_APB1LPENR_I2C1LPEN (1U << RCC_APB1LPENR_I2C1LPEN_BIT) + #define RCC_APB1LPENR_UART5LPEN (1U << RCC_APB1LPENR_UART5LPEN_BIT) + #define RCC_APB1LPENR_UART4LPEN (1U << RCC_APB1LPENR_UART4LPEN_BIT) + #define RCC_APB1LPENR_USART3LPEN (1U << RCC_APB1LPENR_USART3LPEN_BIT) + #define RCC_APB1LPENR_USART2LPEN (1U << RCC_APB1LPENR_USART2LPEN_BIT) + #define RCC_APB1LPENR_SPI3LPEN (1U << RCC_APB1LPENR_SPI3LPEN_BIT) + #define RCC_APB1LPENR_SPI2LPEN (1U << RCC_APB1LPENR_SPI2LPEN_BIT) + #define RCC_APB1LPENR_WWDGLPEN (1U << RCC_APB1LPENR_WWDGLPEN_BIT) + #define RCC_APB1LPENR_TIM14LPEN (1U << RCC_APB1LPENR_TIM14LPEN_BIT) + #define RCC_APB1LPENR_TIM13LPEN (1U << RCC_APB1LPENR_TIM13LPEN_BIT) + #define RCC_APB1LPENR_TIM12LPEN (1U << RCC_APB1LPENR_TIM12LPEN_BIT) + #define RCC_APB1LPENR_TIM7LPEN (1U << RCC_APB1LPENR_TIM7LPEN_BIT) + #define RCC_APB1LPENR_TIM6LPEN (1U << RCC_APB1LPENR_TIM6LPEN_BIT) + #define RCC_APB1LPENR_TIM5LPEN (1U << RCC_APB1LPENR_TIM5LPEN_BIT) + #define RCC_APB1LPENR_TIM4LPEN (1U << RCC_APB1LPENR_TIM4LPEN_BIT) + #define RCC_APB1LPENR_TIM3LPEN (1U << RCC_APB1LPENR_TIM3LPEN_BIT) + #define RCC_APB1LPENR_TIM2LPEN (1U << RCC_APB1LPENR_TIM2LPEN_BIT) + + /* APB2 */ + + #define RCC_APB2LPENR_TIM11LPEN_BIT 18 + #define RCC_APB2LPENR_TIM10LPEN_BIT 17 + #define RCC_APB2LPENR_TIM9LPEN_BIT 16 + #define RCC_APB2LPENR_SYSCFGLPEN_BIT 14 + #define RCC_APB2LPENR_SPI1LPEN_BIT 12 + #define RCC_APB2LPENR_SDIOLPEN_BIT 11 + #define RCC_APB2LPENR_ADC3LPEN_BIT 10 + #define RCC_APB2LPENR_ADC2LPEN_BIT 9 + #define RCC_APB2LPENR_ADC1LPEN_BIT 8 + #define RCC_APB2LPENR_USART6LPEN_BIT 5 + #define RCC_APB2LPENR_USART1LPEN_BIT 4 + #define RCC_APB2LPENR_TIM8LPEN_BIT 1 + #define RCC_APB2LPENR_TIM1LPEN_BIT 0 + + #define RCC_APB2LPENR_TIM11LPEN (1U << RCC_APB2LPENR_TIM11LPEN_BIT) + #define RCC_APB2LPENR_TIM10LPEN (1U << RCC_APB2LPENR_TIM10LPEN_BIT) + #define RCC_APB2LPENR_TIM9LPEN (1U << RCC_APB2LPENR_TIM9LPEN_BIT) + #define RCC_APB2LPENR_SYSCFGLPEN (1U << RCC_APB2LPENR_SYSCFGLPEN_BIT) + #define RCC_APB2LPENR_SPI1LPEN (1U << RCC_APB2LPENR_SPI1LPEN_BIT) + #define RCC_APB2LPENR_SDIOLPEN (1U << RCC_APB2LPENR_SDIOLPEN_BIT) + #define RCC_APB2LPENR_ADC3LPEN (1U << RCC_APB2LPENR_ADC3LPEN_BIT) + #define RCC_APB2LPENR_ADC2LPEN (1U << RCC_APB2LPENR_ADC2LPEN_BIT) + #define RCC_APB2LPENR_ADC1LPEN (1U << RCC_APB2LPENR_ADC1LPEN_BIT) + #define RCC_APB2LPENR_USART6LPEN (1U << RCC_APB2LPENR_USART6LPEN_BIT) + #define RCC_APB2LPENR_USART1LPEN (1U << RCC_APB2LPENR_USART1LPEN_BIT) + #define RCC_APB2LPENR_TIM8LPEN (1U << RCC_APB2LPENR_TIM8LPEN_BIT) + #define RCC_APB2LPENR_TIM1LPEN (1U << RCC_APB2LPENR_TIM1LPEN_BIT) + +Backup domain control register +++++++++++++++++++++++++++++++ + +:: + + #define RCC_BDCR_BDRST_BIT 16 + #define RCC_BDCR_RTCEN_BIT 15 + #define RCC_BDCR_LSEBYP_BIT 2 + #define RCC_BDCR_LSERDY_BIT 1 + #define RCC_BDCR_LSEON_BIT 0 + + #define RCC_BDCR_BDRST (1U << RCC_BDCR_BDRST_BIT) + #define RCC_BDCR_RTCEN (1U << RCC_BDCR_RTCEN_BIT) + #define RCC_BDCR_RTCSEL (0x3 << 8) + #define RCC_BDCR_RTCSEL_NOCLOCK (0x0 << 8) + #define RCC_BDCR_RTCSEL_LSE (0x1 << 8) + #define RCC_BDCR_RTCSEL_LSI (0x2 << 8) + #define RCC_BDCR_RTCSEL_HSE_DIV (0x3 << 8) + #define RCC_BDCR_LSEBYP (1U << RCC_BDCR_LSEBYP_BIT) + #define RCC_BDCR_LSERDY (1U << RCC_BDCR_LSERDY_BIT) + #define RCC_BDCR_LSEON (1U << RCC_BDCR_LSEON_BIT) + +Clock control and status register ++++++++++++++++++++++++++++++++++ + +:: + + #define RCC_CSR_LPWRRSTF_BIT 31 + #define RCC_CSR_WWDGRSTF_BIT 30 + #define RCC_CSR_IWDGRSTF_BIT 29 + #define RCC_CSR_SFTRSTF_BIT 28 + #define RCC_CSR_PORRSTF_BIT 27 + #define RCC_CSR_PINRSTF_BIT 26 + #define RCC_CSR_BORRSTF_BIT 25 + #define RCC_CSR_RMVF_BIT 24 + #define RCC_CSR_LSIRDY_BIT 1 + #define RCC_CSR_LSION_BIT 0 + + #define RCC_CSR_LPWRRSTF (1U << RCC_CSR_LPWRRSTF_BIT) + #define RCC_CSR_WWDGRSTF (1U << RCC_CSR_WWDGRSTF_BIT) + #define RCC_CSR_IWDGRSTF (1U << RCC_CSR_IWDGRSTF_BIT) + #define RCC_CSR_SFTRSTF (1U << RCC_CSR_SFTRSTF_BIT) + #define RCC_CSR_PORRSTF (1U << RCC_CSR_PORRSTF_BIT) + #define RCC_CSR_PINRSTF (1U << RCC_CSR_PINRSTF_BIT) + #define RCC_CSR_BORRSTF (1U << RCC_CSR_BORRSTF_BIT) + #define RCC_CSR_RMVF (1U << RCC_CSR_RMVF_BIT) + #define RCC_CSR_LSIRDY (1U << RCC_CSR_LSIRDY_BIT) + #define RCC_CSR_LSION (1U << RCC_CSR_LSION_BIT) + +Spread spectrum clock generation register ++++++++++++++++++++++++++++++++++++++++++ + +:: + + #define RCC_SSCGR_SSCGEN_BIT 31 + #define RCC_SSCGR_SPREADSEL_BIT 30 + + #define RCC_SSCGR_SSCGEN (1U << RCC_SSCGR_SSCGEN_BIT) + #define RCC_SSCGR_SPREADSEL (1U << RCC_SSCGR_SPREADSEL_BIT) + #define RCC_SSCGR_SPREADSEL_CENTER (0x0 << RCC_SSCGR_SPREADSEL_BIT) + #define RCC_SSCGR_SPREADSEL_DOWN (0x1 << RCC_SSCGR_SPREADSEL_BIT) + #define RCC_SSCGR_INCSTEP (0xFFF << 16) + #define RCC_SSCGR_MODPER 0xFFFF + +PLLI2S configuration register ++++++++++++++++++++++++++++++ + +:: + + #define RCC_PLLI2SCFGR_PLLI2SR (0x7 << 28) + #define RCC_PLLI2SCFGR_PLLI2SN (0x1FF << 6) + diff --git a/docs/source/libmaple/api/rcc.rst b/docs/source/libmaple/api/rcc.rst new file mode 100644 index 0000000..ce58ec8 --- /dev/null +++ b/docs/source/libmaple/api/rcc.rst @@ -0,0 +1,360 @@ +.. highlight:: c +.. _libmaple-rcc: + +``<libmaple/rcc.h>`` +==================== + +Reset and Clock Control (RCC) support. + +The RCC is responsible for managing the MCU's various clocks. This +includes the core clock SYSCLK, which determines the CPU clock +frequency, as well as the clock lines that drive peripherals. + +Because of this, the available RCC functionality varies by target. +There are a :ref:`variety of abstractions <libmaple-rcc-core-types>` +in place to make managing this more convenient. + +.. contents:: Contents + :local: + :depth: 2 + +.. _libmaple-rcc-core-types: + +Core Types +---------- + +The core abstractions in place are +:ref:`rcc_clk_id <libmaple-rcc-rcc_clk_id>`, +:ref:`rcc_clk <libmaple-rcc-rcc_clk>`, +:ref:`rcc_sysclk_src <libmaple-rcc-rcc_sysclk_src>`, +:ref:`rcc_clk_domain <libmaple-rcc-rcc_clk_domain>`, and +:ref:`rcc_prescaler <libmaple-rcc-rcc_prescaler>`. + +.. _libmaple-rcc-rcc_clk_id: + +Peripheral Identifiers: ``rcc_clk_id`` +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +``rcc_clk_id`` is an enum used to identify peripherals. The RCC +back-ends use them to look up a peripheral's bus and clock line, but +they are also generally useful as unique identifiers for each +peripheral. You can manage peripherals using their ``rcc_clk_id``\ s +with :ref:`these functions <libmaple-rcc-clk-id-funcs>`. + +Peripherals which are common across targets have the same token +(though not necessarily the same value) for their ``rcc_clk_id`` +across different targets. For example, the ``rcc_clk_id`` for the ADC1 +peripheral is always ``RCC_ADC1`` regardless of the target. +Additionally, as explained in :ref:`libmaple-overview-devices`, each +peripheral device type struct contains the ``rcc_clk_id`` for that +peripheral in a ``clk_id`` field. + +The available ``rcc_clk_id``\ s on each supported target series are as +follows. + +STM32F1 Targets ++++++++++++++++ + +.. doxygenenum:: stm32f1::rcc_clk_id + +STM32F2 Targets ++++++++++++++++ + +.. doxygenenum:: stm32f2::rcc_clk_id + +.. _libmaple-rcc-rcc_sysclk_src: + +System Clock (SYSCLK) Sources: ``rcc_sysclk_src`` +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +SYSCLK is the core system clock. It determines the CPU clock rate, and +it's the base clock which is used to drive (most of) the peripherals +on the STM32. ``rcc_sysclk_src`` is an enum for the possible SYSCLK +sources. Switch the SYSCLK source with :ref:`rcc_switch_sysclk() +<libmaple-rcc-rcc_switch_sysclk>`. + +.. doxygenenum:: rcc_sysclk_src + +As a special case, you can configure the PLL with a call to +:ref:`rcc_configure_pll() <libmaple-rcc-rcc_configure_pll>`. + +.. _libmaple-rcc-rcc_clk: + +System and Secondary Clock Sources: ``rcc_clk`` +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +The ``rcc_clk`` type gives available system and secondary clock +sources (e.g. HSI, HSE, LSE). As with :ref:`rcc_clk_id +<libmaple-rcc-rcc_clk_id>`, clock sources which are common across +targets have the same token, but not necessarily the same value, for +their ``rcc_clk`` on each target. A variety of :ref:`clock management +functions <libmaple-rcc-clk-funcs>` are available. + +Note that the inclusion of secondary clock sources, like LSI and LSE, +makes ``rcc_clk`` different from the SYSCLK sources, which are managed +using :ref:`rcc_sysclk_src <libmaple-rcc-rcc_sysclk_src>`. + +The available ``rcc_clk``\ s for each supported target series are as +follows. + +STM32F1 Targets ++++++++++++++++ + +.. doxygenenum:: stm32f1::rcc_clk + +STM32F2 Targets ++++++++++++++++ + +.. doxygenenum:: stm32f2::rcc_clk + +.. _libmaple-rcc-rcc_clk_domain: + +Clock Domains: ``rcc_clk_domain`` +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +These specify the available clock domains. For example, each AHB and +APB is a clock domain. + +This type mostly exists to enable asking devices what bus they're on, +which, given knowledge of your system's clock configuration, can be +useful when making decisions about prescalers, etc. + +Given an :ref:`rcc_clk_id <libmaple-rcc-rcc_clk_id>`, you can get the +peripheral's clock domain with :ref:`rcc_dev_clk() +<libmaple-rcc-rcc_dev_clk>`. Clock domains that are common across +series have the same token (but not necessarily the same value) for +their corresponding ``rcc_clk_domain``. + +The available ``rcc_clk_domain``\ s for each supported target series +are as follows. + +STM32F1 Targets ++++++++++++++++ + +.. doxygenenum:: stm32f1::rcc_clk_domain + +STM32F2 Targets ++++++++++++++++ + +.. doxygenenum:: stm32f2::rcc_clk_domain + +.. _libmaple-rcc-rcc_prescaler: + +Prescalers: ``rcc_prescaler`` and Friends +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +Available prescalers are managed via the ``rcc_prescaler`` type, the +``rcc_set_prescaler()`` function, and a variety of related prescaler +divider types. See :ref:`libmaple-rcc-prescalers` for more +information and usage notes. + +Functions +--------- + +.. _libmaple-rcc-sysclk-funcs: +.. _libmaple-rcc-rcc_switch_sysclk: + +SYSCLK Management +~~~~~~~~~~~~~~~~~ + +Change the SYSCLK source with ``rcc_switch_sysclk()``. + +.. doxygenfunction:: rcc_switch_sysclk + +.. _libmaple-rcc-rcc_configure_pll: + +PLL Configuration +~~~~~~~~~~~~~~~~~ + +You can configure the PLL with ``rcc_configure_pll()``. This takes an +``rcc_pll_cfg`` struct as its argument. Though the definition of +``rcc_pll_cfg`` is common across series, its contents are entirely +target-dependent. + +.. doxygenstruct:: rcc_pll_cfg +.. _rcc-rcc_configure_pll: +.. doxygenfunction:: rcc_configure_pll + +The fields in an ``rcc_pll_cfg`` on each target are as follows. + +rcc_pll_cfg on STM32F1 Targets +++++++++++++++++++++++++++++++ + +The ``pllsrc`` field is chosen from the following. + +.. doxygenenum:: stm32f1::rcc_pllsrc + +.. FIXME [0.0.13] We've got plans to redo this; make sure you watch +.. libmaple for changes here. + +The ``data`` field must point to a ``struct stm32f1_rcc_pll_data``. +This just contains an ``rcc_pll_multiplier``. + +.. doxygenenum:: stm32f1::rcc_pll_multiplier + +.. doxygenstruct:: stm32f1::stm32f1_rcc_pll_data + +rcc_pll_cfg on STM32F2 Targets +++++++++++++++++++++++++++++++ + +The ``pllsrc`` field is chosen from the following. + +.. doxygenenum:: stm32f2::rcc_pllsrc + +The ``data`` field must point to a ``struct stm32f2_rcc_pll_data``. + +.. doxygenstruct:: stm32f2::stm32f2_rcc_pll_data + +.. _libmaple-rcc-clk-funcs: + +System and Secondary Clock Management +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +These functions are useful for managing clocks via their :ref:`rcc_clk +<libmaple-rcc-rcc_clk>`. + +.. doxygenfunction:: rcc_turn_on_clk +.. doxygenfunction:: rcc_turn_off_clk +.. doxygenfunction:: rcc_is_clk_on +.. doxygenfunction:: rcc_is_clk_ready + +.. _libmaple-rcc-clk-id-funcs: + +Peripheral Management +~~~~~~~~~~~~~~~~~~~~~ + +These functions are useful for managing peripherals via their +:ref:`rcc_clk_id <libmaple-rcc-rcc_clk_id>`. + +.. _libmaple-rcc-rcc_clk_enable: +.. doxygenfunction:: rcc_clk_enable +.. doxygenfunction:: rcc_reset_dev +.. _libmaple-rcc-rcc_dev_clk: +.. doxygenfunction:: rcc_dev_clk + +.. _libmaple-rcc-prescalers: + +Prescaler Management +~~~~~~~~~~~~~~~~~~~~ + +All clock prescalers managed by RCC can be controlled with a single +function, ``rcc_set_prescaler()``. + +.. doxygenfunction:: rcc_set_prescaler + +The arguments to ``rcc_set_prescaler()`` are target-dependent, but +follow a common pattern: + +- The first argument is the prescaler to set, so there's one for each + peripheral clock domain, etc. These have names like + ``RCC_PRESCALER_FOO``, e.g. ``RCC_PRESCALER_APB1``. Choose the + prescaler from the ``rcc_prescaler``\ s on your target (see below). + +- The second argument is the actual clock divider to use; it's chosen + based on the first argument. The dividers for ``RCC_PRESCALER_FOO`` + are given by the type ``rcc_foo_divider``, and have values like + ``RCC_FOO_xxx_DIV_y``. This means that the foo clock will be the + ``xxx`` clock divided by ``y``. + +For example, calling ``rcc_set_prescaler(RCC_PRESCALER_APB1, +RCC_APB1_HCLK_DIV_1)`` would set the APB1 clock to HCLK divided by 1. + +Prescalers which are common across targets have the same token, though +not necessarily the same value, for their ``rcc_prescaler`` (for +example, ``RCC_PRESCALER_APB1`` is available on both STM32F1 and +STM32F2 targets). The available prescalers and dividers on each +supported target series are as follows. + +STM32F1 Targets ++++++++++++++++ + +.. doxygenenum:: stm32f1::rcc_prescaler +.. doxygenenum:: stm32f1::rcc_adc_divider +.. doxygenenum:: stm32f1::rcc_apb1_divider +.. doxygenenum:: stm32f1::rcc_apb2_divider +.. doxygenenum:: stm32f1::rcc_ahb_divider + +STM32F2 Targets ++++++++++++++++ + +.. doxygenenum:: stm32f2::rcc_prescaler +.. doxygenenum:: stm32f2::rcc_mco2_divider +.. doxygenenum:: stm32f2::rcc_mco1_divider +.. doxygenenum:: stm32f2::rcc_rtc_divider +.. doxygenenum:: stm32f2::rcc_apb2_divider +.. doxygenenum:: stm32f2::rcc_apb1_divider +.. doxygenenum:: stm32f2::rcc_ahb_divider + +Register Maps +------------- + +These vary by target. The base pointer is always ``RCC_BASE``. + +.. doxygendefine:: RCC_BASE + +STM32F1 Targets +~~~~~~~~~~~~~~~ + +.. doxygenstruct:: stm32f1::rcc_reg_map + +STM32F2 Targets +~~~~~~~~~~~~~~~ + +.. doxygenstruct:: stm32f2::rcc_reg_map + +Register Bit Definitions +------------------------ + +These are given as source code. Available register bit definitions +vary by target. + +.. We need this include to avoid crashing Emacs's ReST parser. Yuck. + +.. include:: rcc-reg-bits.txt + +Deprecated Functionality +------------------------ + +.. _rcc-rcc_clk_init: +.. doxygenfunction:: stm32f1::rcc_clk_init + +To replace a call to ``rcc_clk_init()`` in order to set SYSCLK to PLL +driven by an external oscillator, you can use something like this, +which is portable except for the initialization of ``your_pll_cfg``:: + + /* You need to make this point to something valid for your target; see + * the documentation for rcc_configure_pll() for more details. */ + extern rcc_pll_cfg *your_pll_cfg; + + void pll_reconfigure() { + /* Turn on HSI using rcc_turn_on_clk() and wait for it to + * become ready by busy-waiting on rcc_is_clk_ready(). + * + * Switch to HSI to ensure we're not using the PLL while we + * reconfigure it. */ + rcc_turn_on_clk(RCC_CLK_HSI); + while (!rcc_is_clk_ready(RCC_CLK_HSI)) + ; + rcc_switch_sysclk(RCC_CLKSRC_HSI); + + /* Turn off HSE and the PLL, or we can't reconfigure it. */ + rcc_turn_off_clk(RCC_CLK_PLL); + rcc_turn_off_clk(RCC_CLK_HSE); + + /* Reconfigure the PLL. You can also perform any other + * prescaler management here. */ + rcc_configure_pll(your_pll_cfg); + + /* Turn on RCC_CLK_HSE. */ + rcc_turn_on_clk(RCC_CLK_HSE); + while (!rcc_is_clk_ready(RCC_CLK_HSE)) + ; + + /* Turn on RCC_CLK_PLL. */ + rcc_turn_on_clk(RCC_CLK_PLL); + while (!rcc_is_clk_ready(RCC_CLK_PLL)) + ; + + /* Finally, switch to the PLL. */ + rcc_switch_sysclk(RCC_CLKSRC_PLL); + } diff --git a/docs/source/libmaple/api/ring_buffer.rst b/docs/source/libmaple/api/ring_buffer.rst new file mode 100644 index 0000000..ef082dd --- /dev/null +++ b/docs/source/libmaple/api/ring_buffer.rst @@ -0,0 +1,27 @@ +.. highlight:: c +.. _libmaple-ring_buffer: + +``<libmaple/ring_buffer.h>`` +============================ + +Simple circular byte buffer. This implementation is not thread-safe. +In particular, none of these functions is guaranteed to be re-entrant. + +Ring Buffer Type +---------------- + +.. doxygenstruct:: ring_buffer + +Ring Buffer Operations +---------------------- + +.. doxygenfunction:: rb_init +.. doxygenfunction:: rb_full_count +.. doxygenfunction:: rb_is_full +.. doxygenfunction:: rb_is_empty +.. doxygenfunction:: rb_insert +.. doxygenfunction:: rb_remove +.. doxygenfunction:: rb_safe_remove +.. doxygenfunction:: rb_safe_insert +.. doxygenfunction:: rb_push_insert +.. doxygenfunction:: rb_reset diff --git a/docs/source/libmaple/api/scb.rst b/docs/source/libmaple/api/scb.rst new file mode 100644 index 0000000..96d464f --- /dev/null +++ b/docs/source/libmaple/api/scb.rst @@ -0,0 +1,156 @@ +.. highlight:: c +.. _libmaple-scb: + +``<libmaple/scb.h>`` +==================== + +.. TODO [0.0.13] check for any F2 modifications + +System Control Block (SCB) support. This is currently limited to a +register map and bit definitions. + +.. warning:: + + At time of writing, ST PM0056 (which specifies the system control + block on STM32F1) appears to be buggy (some registers required or + specified as implementation-defined by ARM are not mentioned). + This file is the result of combining material from ARM and ST, and + is subject to change. See the source code for more details. + + If you notice a problem or have any other input on this, please + `contact`_ us! + +.. contents:: Contents + :local: + +Register Maps +------------- + +The SCB has the following register map. Its base pointer is ``SCB_BASE``. + +.. doxygenstruct:: scb_reg_map +.. doxygendefine:: SCB_BASE + +Register Bit Definitions +------------------------ + +These are given as source code. + +:: + + /* No SCB_REG_FIELD_BIT macros as the relevant addresses are not in a + * bit-band region. */ + + /* CPUID base register (SCB_CPUID) */ + + #define SCB_CPUID_IMPLEMENTER (0xFF << 24) + #define SCB_CPUID_VARIANT (0xF << 20) + #define SCB_CPUID_CONSTANT (0xF << 16) + #define SCB_CPUID_PARTNO (0xFFF << 4) + #define SCB_CPUID_REVISION 0xF + + /* Interrupt control state register (SCB_ICSR) */ + + #define SCB_ICSR_NMIPENDSET (1U << 31) + #define SCB_ICSR_PENDSVSET (1U << 28) + #define SCB_ICSR_PENDSVCLR (1U << 27) + #define SCB_ICSR_PENDSTSET (1U << 26) + #define SCB_ICSR_PENDSTCLR (1U << 25) + #define SCB_ICSR_ISRPENDING (1U << 22) + #define SCB_ICSR_VECTPENDING (0x3FF << 12) + #define SCB_ICSR_RETOBASE (1U << 11) + #define SCB_ICSR_VECTACTIVE 0xFF + + /* Vector table offset register (SCB_VTOR) */ + + #define SCB_VTOR_TBLOFF (0x1FFFFF << 9) + + /* Application interrupt and reset control register (SCB_AIRCR) */ + + #define SCB_AIRCR_VECTKEYSTAT (0x5FA << 16) + #define SCB_AIRCR_VECTKEY (0x5FA << 16) + #define SCB_AIRCR_ENDIANNESS (1U << 15) + #define SCB_AIRCR_PRIGROUP (0x3 << 8) + #define SCB_AIRCR_SYSRESETREQ (1U << 2) + #define SCB_AIRCR_VECTCLRACTIVE (1U << 1) + #define SCB_AIRCR_VECTRESET (1U << 0) + + /* System control register (SCB_SCR) */ + + #define SCB_SCR_SEVONPEND (1U << 4) + #define SCB_SCR_SLEEPDEEP (1U << 2) + #define SCB_SCR_SLEEPONEXIT (1U << 1) + + /* Configuration and Control Register (SCB_CCR) */ + + #define SCB_CCR_STKALIGN (1U << 9) + #define SCB_CCR_BFHFNMIGN (1U << 8) + #define SCB_CCR_DIV_0_TRP (1U << 4) + #define SCB_CCR_UNALIGN_TRP (1U << 3) + #define SCB_CCR_USERSETMPEND (1U << 1) + #define SCB_CCR_NONBASETHRDENA (1U << 0) + + /* System handler priority registers (SCB_SHPRx) */ + + #define SCB_SHPR1_PRI6 (0xFF << 16) + #define SCB_SHPR1_PRI5 (0xFF << 8) + #define SCB_SHPR1_PRI4 0xFF + + #define SCB_SHPR2_PRI11 (0xFF << 24) + + #define SCB_SHPR3_PRI15 (0xFF << 24) + #define SCB_SHPR3_PRI14 (0xFF << 16) + + /* System Handler Control and state register (SCB_SHCSR) */ + + #define SCB_SHCSR_USGFAULTENA (1U << 18) + #define SCB_SHCSR_BUSFAULTENA (1U << 17) + #define SCB_SHCSR_MEMFAULTENA (1U << 16) + #define SCB_SHCSR_SVCALLPENDED (1U << 15) + #define SCB_SHCSR_BUSFAULTPENDED (1U << 14) + #define SCB_SHCSR_MEMFAULTPENDED (1U << 13) + #define SCB_SHCSR_USGFAULTPENDED (1U << 12) + #define SCB_SHCSR_SYSTICKACT (1U << 11) + #define SCB_SHCSR_PENDSVACT (1U << 10) + #define SCB_SHCSR_MONITORACT (1U << 8) + #define SCB_SHCSR_SVCALLACT (1U << 7) + #define SCB_SHCSR_USGFAULTACT (1U << 3) + #define SCB_SHCSR_BUSFAULTACT (1U << 1) + #define SCB_SHCSR_MEMFAULTACT (1U << 0) + + /* Configurable fault status register (SCB_CFSR) */ + + #define SCB_CFSR_DIVBYZERO (1U << 25) + #define SCB_CFSR_UNALIGNED (1U << 24) + #define SCB_CFSR_NOCP (1U << 19) + #define SCB_CFSR_INVPC (1U << 18) + #define SCB_CFSR_INVSTATE (1U << 17) + #define SCB_CFSR_UNDEFINSTR (1U << 16) + #define SCB_CFSR_BFARVALID (1U << 15) + #define SCB_CFSR_STKERR (1U << 12) + #define SCB_CFSR_UNSTKERR (1U << 11) + #define SCB_CFSR_IMPRECISERR (1U << 10) + #define SCB_CFSR_PRECISERR (1U << 9) + #define SCB_CFSR_IBUSERR (1U << 8) + #define SCB_CFSR_MMARVALID (1U << 7) + #define SCB_CFSR_MSTKERR (1U << 4) + #define SCB_CFSR_MUNSTKERR (1U << 3) + #define SCB_CFSR_DACCVIOL (1U << 1) + #define SCB_CFSR_IACCVIOL (1U << 0) + + /* Hard Fault Status Register (SCB_HFSR) */ + + #define SCB_HFSR_DEBUG_VT (1U << 31) + #define SCB_CFSR_FORCED (1U << 30) + #define SCB_CFSR_VECTTBL (1U << 1) + + /* Debug Fault Status Register */ + + /* Not specified by PM0056, but required by ARM. The bit definitions + * here are based on the names given in the ARM v7-M ARM. */ + + #define SCB_DFSR_EXTERNAL (1U << 4) + #define SCB_DFSR_VCATCH (1U << 3) + #define SCB_DFSR_DWTTRAP (1U << 2) + #define SCB_DFSR_BKPT (1U << 1) + #define SCB_DFSR_HALTED (1U << 0) diff --git a/docs/source/libmaple/api/spi.rst b/docs/source/libmaple/api/spi.rst new file mode 100644 index 0000000..e72696b --- /dev/null +++ b/docs/source/libmaple/api/spi.rst @@ -0,0 +1,187 @@ +.. highlight:: c +.. _libmaple-spi: + +``spi.h`` +========= + +Serial Peripheral Interface (SPI) support. Currently, there is no I2S +support beyond register bit definitions. + +.. contents:: Contents + :local: + +Types +----- + +.. doxygenstruct:: spi_reg_map +.. doxygenstruct:: spi_dev +.. doxygenenum:: spi_mode +.. doxygenenum:: spi_baud_rate +.. doxygenenum:: spi_cfg_flag +.. doxygenenum:: spi_interrupt + +Devices +------- + +.. doxygenvariable:: SPI1 +.. doxygenvariable:: SPI2 +.. doxygenvariable:: SPI3 + +Functions +--------- + +.. doxygenfunction:: spi_init +.. doxygenfunction:: spi_gpio_cfg +.. doxygenfunction:: spi_master_enable +.. doxygenfunction:: spi_slave_enable +.. doxygenfunction:: spi_tx +.. doxygenfunction:: spi_foreach +.. doxygenfunction:: spi_peripheral_enable +.. doxygenfunction:: spi_peripheral_disable +.. doxygenfunction:: spi_peripheral_disable_all +.. doxygenfunction:: spi_tx_dma_enable +.. doxygenfunction:: spi_tx_dma_disable +.. doxygenfunction:: spi_rx_dma_enable +.. doxygenfunction:: spi_rx_dma_disable +.. doxygenfunction:: spi_is_enabled +.. doxygenfunction:: spi_irq_enable +.. doxygenfunction:: spi_irq_disable +.. doxygenfunction:: spi_dff +.. doxygenfunction:: spi_is_rx_nonempty +.. doxygenfunction:: spi_rx_reg +.. doxygenfunction:: spi_is_tx_empty +.. doxygenfunction:: spi_tx_reg +.. doxygenfunction:: spi_is_busy + +Register Map Base Pointers +-------------------------- + +.. doxygendefine:: SPI1_BASE +.. doxygendefine:: SPI2_BASE +.. doxygendefine:: SPI3_BASE + +Register Bit Definitions +------------------------ + +Control register 1 +~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: SPI_CR1_BIDIMODE_BIT +.. doxygendefine:: SPI_CR1_BIDIOE_BIT +.. doxygendefine:: SPI_CR1_CRCEN_BIT +.. doxygendefine:: SPI_CR1_CRCNEXT_BIT +.. doxygendefine:: SPI_CR1_DFF_BIT +.. doxygendefine:: SPI_CR1_RXONLY_BIT +.. doxygendefine:: SPI_CR1_SSM_BIT +.. doxygendefine:: SPI_CR1_SSI_BIT +.. doxygendefine:: SPI_CR1_LSBFIRST_BIT +.. doxygendefine:: SPI_CR1_SPE_BIT +.. doxygendefine:: SPI_CR1_MSTR_BIT +.. doxygendefine:: SPI_CR1_CPOL_BIT +.. doxygendefine:: SPI_CR1_CPHA_BIT + +.. doxygendefine:: SPI_CR1_BIDIMODE +.. doxygendefine:: SPI_CR1_BIDIMODE_2_LINE +.. doxygendefine:: SPI_CR1_BIDIMODE_1_LINE +.. doxygendefine:: SPI_CR1_BIDIOE +.. doxygendefine:: SPI_CR1_CRCEN +.. doxygendefine:: SPI_CR1_CRCNEXT +.. doxygendefine:: SPI_CR1_DFF +.. doxygendefine:: SPI_CR1_DFF_8_BIT +.. doxygendefine:: SPI_CR1_DFF_16_BIT +.. doxygendefine:: SPI_CR1_RXONLY +.. doxygendefine:: SPI_CR1_SSM +.. doxygendefine:: SPI_CR1_SSI +.. doxygendefine:: SPI_CR1_LSBFIRST +.. doxygendefine:: SPI_CR1_SPE +.. doxygendefine:: SPI_CR1_BR +.. doxygendefine:: SPI_CR1_BR_PCLK_DIV_2 +.. doxygendefine:: SPI_CR1_BR_PCLK_DIV_4 +.. doxygendefine:: SPI_CR1_BR_PCLK_DIV_8 +.. doxygendefine:: SPI_CR1_BR_PCLK_DIV_16 +.. doxygendefine:: SPI_CR1_BR_PCLK_DIV_32 +.. doxygendefine:: SPI_CR1_BR_PCLK_DIV_64 +.. doxygendefine:: SPI_CR1_BR_PCLK_DIV_128 +.. doxygendefine:: SPI_CR1_BR_PCLK_DIV_256 +.. doxygendefine:: SPI_CR1_MSTR +.. doxygendefine:: SPI_CR1_CPOL +.. doxygendefine:: SPI_CR1_CPOL_LOW +.. doxygendefine:: SPI_CR1_CPOL_HIGH +.. doxygendefine:: SPI_CR1_CPHA + +Control register 2 +~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: SPI_CR2_TXEIE_BIT +.. doxygendefine:: SPI_CR2_RXNEIE_BIT +.. doxygendefine:: SPI_CR2_ERRIE_BIT +.. doxygendefine:: SPI_CR2_SSOE_BIT +.. doxygendefine:: SPI_CR2_TXDMAEN_BIT +.. doxygendefine:: SPI_CR2_RXDMAEN_BIT + +.. doxygendefine:: SPI_CR2_TXEIE +.. doxygendefine:: SPI_CR2_RXNEIE +.. doxygendefine:: SPI_CR2_ERRIE +.. doxygendefine:: SPI_CR2_SSOE +.. doxygendefine:: SPI_CR2_TXDMAEN +.. doxygendefine:: SPI_CR2_RXDMAEN + +Status register +~~~~~~~~~~~~~~~ + +.. doxygendefine:: SPI_SR_BSY_BIT +.. doxygendefine:: SPI_SR_OVR_BIT +.. doxygendefine:: SPI_SR_MODF_BIT +.. doxygendefine:: SPI_SR_CRCERR_BIT +.. doxygendefine:: SPI_SR_UDR_BIT +.. doxygendefine:: SPI_SR_CHSIDE_BIT +.. doxygendefine:: SPI_SR_TXE_BIT +.. doxygendefine:: SPI_SR_RXNE_BIT + +.. doxygendefine:: SPI_SR_BSY +.. doxygendefine:: SPI_SR_OVR +.. doxygendefine:: SPI_SR_MODF +.. doxygendefine:: SPI_SR_CRCERR +.. doxygendefine:: SPI_SR_UDR +.. doxygendefine:: SPI_SR_CHSIDE +.. doxygendefine:: SPI_SR_CHSIDE_LEFT +.. doxygendefine:: SPI_SR_CHSIDE_RIGHT +.. doxygendefine:: SPI_SR_TXE +.. doxygendefine:: SPI_SR_RXNE + +I2S configuration register +~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: SPI_I2SCFGR_I2SMOD_BIT +.. doxygendefine:: SPI_I2SCFGR_I2SE_BIT +.. doxygendefine:: SPI_I2SCFGR_PCMSYNC_BIT +.. doxygendefine:: SPI_I2SCFGR_CKPOL_BIT +.. doxygendefine:: SPI_I2SCFGR_CHLEN_BIT + +.. doxygendefine:: SPI_I2SCFGR_I2SMOD +.. doxygendefine:: SPI_I2SCFGR_I2SMOD_SPI +.. doxygendefine:: SPI_I2SCFGR_I2SMOD_I2S +.. doxygendefine:: SPI_I2SCFGR_I2SE +.. doxygendefine:: SPI_I2SCFGR_I2SCFG +.. doxygendefine:: SPI_I2SCFGR_I2SCFG_SLAVE_TX +.. doxygendefine:: SPI_I2SCFGR_I2SCFG_SLAVE_RX +.. doxygendefine:: SPI_I2SCFGR_I2SCFG_MASTER_TX +.. doxygendefine:: SPI_I2SCFGR_I2SCFG_MASTER_RX +.. doxygendefine:: SPI_I2SCFGR_PCMSYNC +.. doxygendefine:: SPI_I2SCFGR_PCMSYNC_SHORT +.. doxygendefine:: SPI_I2SCFGR_PCMSYNC_LONG +.. doxygendefine:: SPI_I2SCFGR_I2SSTD +.. doxygendefine:: SPI_I2SCFGR_I2SSTD_PHILLIPS +.. doxygendefine:: SPI_I2SCFGR_I2SSTD_MSB +.. doxygendefine:: SPI_I2SCFGR_I2SSTD_LSB +.. doxygendefine:: SPI_I2SCFGR_I2SSTD_PCM +.. doxygendefine:: SPI_I2SCFGR_CKPOL +.. doxygendefine:: SPI_I2SCFGR_CKPOL_LOW +.. doxygendefine:: SPI_I2SCFGR_CKPOL_HIGH +.. doxygendefine:: SPI_I2SCFGR_DATLEN +.. doxygendefine:: SPI_I2SCFGR_DATLEN_16_BIT +.. doxygendefine:: SPI_I2SCFGR_DATLEN_24_BIT +.. doxygendefine:: SPI_I2SCFGR_DATLEN_32_BIT +.. doxygendefine:: SPI_I2SCFGR_CHLEN +.. doxygendefine:: SPI_I2SCFGR_CHLEN_16_BIT +.. doxygendefine:: SPI_I2SCFGR_CHLEN_32_BIT diff --git a/docs/source/libmaple/api/stm32.rst b/docs/source/libmaple/api/stm32.rst new file mode 100644 index 0000000..335bda4 --- /dev/null +++ b/docs/source/libmaple/api/stm32.rst @@ -0,0 +1,121 @@ +.. highlight:: c +.. _libmaple-stm32: + +``<libmaple/stm32.h>`` +====================== + +STM32 chip header. This header supplies various series-specific and +chip-specific macros for the current build target. It's useful both +to abstract away hardware details (e.g. through use of +:ref:`STM32_NR_INTERRUPTS <libmaple-stm32-STM32_NR_INTERRUPTS>`) and +to decide what to do when you want something nonportable (e.g. by +checking :ref:`STM32_MCU_SERIES <libmaple-stm32-STM32_MCU_SERIES>`). + +.. contents:: Contents + :local: + +Determining the Target Series +----------------------------- + +The STM32 series (e.g. STM32F1, STM32F2, etc.) of the current target +can be inspected with ``STM32_MCU_SERIES``. + +.. _libmaple-stm32-STM32_MCU_SERIES: +.. doxygendefine:: STM32_MCU_SERIES + +Allowed values for ``STM32_MCU_SERIES`` are the following. This set is +expected to grow over time. + +.. doxygendefine:: STM32_SERIES_F1 +.. doxygendefine:: STM32_SERIES_F2 +.. doxygendefine:: STM32_SERIES_L1 +.. doxygendefine:: STM32_SERIES_F4 + +Series-Specific Characteristics +------------------------------- + +The macros in this section are only available on some STM32 series. + +STM32F1 +~~~~~~~ + +.. note:: These macros are only available when the current target is + an STM32F1 series MCU (i.e., when :ref:`STM32_MCU_SERIES + <libmaple-stm32-STM32_MCU_SERIES>` is ``STM32_SERIES_F1``). + +The STM32F1 series is further subdivided into :ref:`lines +<stm32-series-f1-lines>`. The line of the current target can be +inspected with ``STM32_F1_LINE``. + +.. doxygendefine:: STM32_F1_LINE + +There are five STM32F1 lines. The corresponding values +``STM32_F1_LINE`` can take are the following, though libmaple doesn't +currently support all of them. + +.. doxygendefine:: STM32_F1_LINE_VALUE +.. doxygendefine:: STM32_F1_LINE_ACCESS +.. doxygendefine:: STM32_F1_LINE_USB_ACCESS +.. doxygendefine:: STM32_F1_LINE_PERFORMANCE +.. doxygendefine:: STM32_F1_LINE_CONNECTIVITY + +MCU Feature Tests +----------------- + +The following defines can be used to determine if the target MCU has +a particular feature. + +.. _libmaple-stm32-STM32_HAVE_FSMC: +.. doxygendefine:: STM32_HAVE_FSMC +.. doxygendefine:: STM32_HAVE_USB + +MCU Characteristics +------------------- + +The following defines give salient characteristics of the target MCU. + +.. doxygendefine:: STM32_NR_GPIO_PORTS +.. _libmaple-stm32-STM32_NR_INTERRUPTS: +.. doxygendefine:: STM32_NR_INTERRUPTS +.. doxygendefine:: STM32_SRAM_END + +Clock Speeds +------------ + +The macros in this section are related to clock rates. As such, they +are really part of the configuration of the MCU, rather than inherent +characteristics of the MCU itself. For instance, it's possible to +change the PCLK1 and PCLK2 clock rates by reconfiguring the :ref:`RCC +<libmaple-rcc>`. libmaple proper never changes any clock rates, but it +does have APIs for doing so (such as :ref:`rcc_configure_pll() +<libmaple-rcc-rcc_configure_pll>`). Because of this, be careful when +using the macros in this section, as they assume that some values are +constant which in fact may be changed. + +The values these macros actually take are typically the maximum values +supported by the MCU. Since these are their actual values in practice +(at least in LeafLabs' current use cases, which have the chips running +as fast as possible), they're still considered useful. + +.. doxygendefine:: STM32_PCLK1 +.. doxygendefine:: STM32_PCLK2 + +The following macro, ``STM32_DELAY_US_MULT``, is a libmaple +implementation detail. It was included in this public API page in a +previous release by mistake, and is not deprecated, but using it in +your own code is a bad idea. + +.. doxygendefine:: STM32_DELAY_US_MULT + +Deprecated Macros +----------------- + +.. warning:: The macros in this section are deprecated, and are + available for backwards compatibility only. Do not use + them in new code. + +.. doxygendefine:: PCLK1 +.. doxygendefine:: PCLK2 +.. doxygendefine:: NR_INTERRUPTS +.. doxygendefine:: NR_GPIO_PORTS +.. doxygendefine:: DELAY_US_MULT diff --git a/docs/source/libmaple/api/systick.rst b/docs/source/libmaple/api/systick.rst new file mode 100644 index 0000000..45b6d63 --- /dev/null +++ b/docs/source/libmaple/api/systick.rst @@ -0,0 +1,62 @@ +.. highlight:: c + +.. _libmaple-systick: + +``systick.h`` +============= + +System timer (SysTick) support. + +.. contents:: Contents + :local: + +Types +----- + +.. doxygenstruct:: systick_reg_map + +Devices +------- + +None. + +Functions +--------- + +.. doxygenfunction:: systick_init +.. _libmaple-systick-enable: +.. doxygenfunction:: systick_enable +.. _libmaple-systick-disable: +.. doxygenfunction:: systick_disable +.. doxygenfunction:: systick_uptime +.. doxygenfunction:: systick_get_count +.. doxygenfunction:: systick_check_underflow + +Register Map Base Pointers +-------------------------- + +.. doxygendefine:: SYSTICK_BASE + +Register Bit Definitions +------------------------ + +Control and status register +~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: SYSTICK_CSR_COUNTFLAG +.. doxygendefine:: SYSTICK_CSR_CLKSOURCE +.. doxygendefine:: SYSTICK_CSR_CLKSOURCE_EXTERNAL +.. doxygendefine:: SYSTICK_CSR_CLKSOURCE_CORE +.. doxygendefine:: SYSTICK_CSR_TICKINT +.. doxygendefine:: SYSTICK_CSR_TICKINT_PEND +.. doxygendefine:: SYSTICK_CSR_TICKINT_NO_PEND +.. doxygendefine:: SYSTICK_CSR_ENABLE +.. doxygendefine:: SYSTICK_CSR_ENABLE_MULTISHOT +.. doxygendefine:: SYSTICK_CSR_ENABLE_DISABLED + +Calibration value register +~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: SYSTICK_CVR_NOREF +.. doxygendefine:: SYSTICK_CVR_SKEW +.. doxygendefine:: SYSTICK_CVR_TENMS diff --git a/docs/source/libmaple/api/timer.rst b/docs/source/libmaple/api/timer.rst new file mode 100644 index 0000000..f315cb0 --- /dev/null +++ b/docs/source/libmaple/api/timer.rst @@ -0,0 +1,453 @@ +.. highlight:: c +.. _libmaple-timer: + +``timer.h`` +=========== + +Timer support. + +.. contents:: Contents + :local: + +Types +----- + +The timer register map type, unlike that for most other peripherals in +libmaple, is a union rather than a struct. This is due to the fact +that there are advanced, general purpose, and basic timers. Thus, +each kind of timer has a register map type, and a ``union +timer_reg_map`` ties it all together. + +.. doxygenstruct:: timer_adv_reg_map +.. doxygenstruct:: timer_gen_reg_map +.. doxygenstruct:: timer_bas_reg_map +.. doxygenunion:: timer_reg_map +.. doxygenenum:: timer_type +.. doxygenstruct:: timer_dev +.. doxygenenum:: timer_mode +.. doxygenenum:: timer_channel +.. doxygenenum:: timer_interrupt_id +.. doxygenenum:: timer_dma_base_addr +.. doxygenenum:: timer_oc_mode +.. doxygenenum:: timer_oc_mode_flags + +Devices +------- + +.. doxygenvariable:: TIMER1 +.. doxygenvariable:: TIMER2 +.. doxygenvariable:: TIMER3 +.. doxygenvariable:: TIMER4 +.. doxygenvariable:: TIMER5 +.. doxygenvariable:: TIMER6 +.. doxygenvariable:: TIMER7 +.. doxygenvariable:: TIMER8 + +Functions +--------- + +Enabling and Disabling +~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygenfunction:: timer_init +.. doxygenfunction:: timer_init_all +.. doxygenfunction:: timer_disable +.. doxygenfunction:: timer_disable_all + +General Configuration +~~~~~~~~~~~~~~~~~~~~~ + +.. doxygenfunction:: timer_set_mode +.. doxygenfunction:: timer_foreach + +Count and Prescaler +~~~~~~~~~~~~~~~~~~~ + +.. doxygenfunction:: timer_get_count +.. doxygenfunction:: timer_set_count +.. doxygenfunction:: timer_pause +.. doxygenfunction:: timer_resume +.. doxygenfunction:: timer_generate_update +.. doxygenfunction:: timer_get_prescaler +.. doxygenfunction:: timer_set_prescaler +.. doxygenfunction:: timer_get_reload +.. doxygenfunction:: timer_set_reload + +Interrupts +~~~~~~~~~~ + +.. doxygenfunction:: timer_attach_interrupt +.. doxygenfunction:: timer_detach_interrupt +.. doxygenfunction:: timer_enable_irq +.. doxygenfunction:: timer_disable_irq + +Capture/Compare +~~~~~~~~~~~~~~~ + +.. doxygenfunction:: timer_get_compare +.. doxygenfunction:: timer_set_compare +.. doxygenfunction:: timer_cc_enable +.. doxygenfunction:: timer_cc_disable +.. doxygenfunction:: timer_cc_get_pol +.. doxygenfunction:: timer_cc_set_pol +.. doxygenfunction:: timer_oc_set_mode + +DMA +~~~ + +.. doxygenfunction:: timer_dma_enable_trg_req +.. doxygenfunction:: timer_dma_disable_trg_req +.. doxygenfunction:: timer_dma_enable_req +.. doxygenfunction:: timer_dma_get_burst_len +.. doxygenfunction:: timer_dma_set_burst_len +.. doxygenfunction:: timer_dma_get_base_addr +.. doxygenfunction:: timer_dma_set_base_addr + +Register Map Base Pointers +-------------------------- + +.. doxygendefine:: TIMER1_BASE +.. doxygendefine:: TIMER2_BASE +.. doxygendefine:: TIMER3_BASE +.. doxygendefine:: TIMER4_BASE +.. doxygendefine:: TIMER5_BASE +.. doxygendefine:: TIMER6_BASE +.. doxygendefine:: TIMER7_BASE +.. doxygendefine:: TIMER8_BASE + +Register Bit Definitions +------------------------ + +Control register 1 (CR1) +~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: TIMER_CR1_ARPE_BIT +.. doxygendefine:: TIMER_CR1_DIR_BIT +.. doxygendefine:: TIMER_CR1_OPM_BIT +.. doxygendefine:: TIMER_CR1_URS_BIT +.. doxygendefine:: TIMER_CR1_UDIS_BIT +.. doxygendefine:: TIMER_CR1_CEN_BIT + +.. doxygendefine:: TIMER_CR1_CKD +.. doxygendefine:: TIMER_CR1_CKD_1TCKINT +.. doxygendefine:: TIMER_CR1_CKD_2TCKINT +.. doxygendefine:: TIMER_CR1_CKD_4TICKINT +.. doxygendefine:: TIMER_CR1_ARPE +.. doxygendefine:: TIMER_CR1_CKD_CMS +.. doxygendefine:: TIMER_CR1_CKD_CMS_EDGE +.. doxygendefine:: TIMER_CR1_CKD_CMS_CENTER1 +.. doxygendefine:: TIMER_CR1_CKD_CMS_CENTER2 +.. doxygendefine:: TIMER_CR1_CKD_CMS_CENTER3 +.. doxygendefine:: TIMER_CR1_DIR +.. doxygendefine:: TIMER_CR1_OPM +.. doxygendefine:: TIMER_CR1_URS +.. doxygendefine:: TIMER_CR1_UDIS +.. doxygendefine:: TIMER_CR1_CEN + +Control register 2 (CR2) +~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: TIMER_CR2_OIS4_BIT +.. doxygendefine:: TIMER_CR2_OIS3N_BIT +.. doxygendefine:: TIMER_CR2_OIS3_BIT +.. doxygendefine:: TIMER_CR2_OIS2N_BIT +.. doxygendefine:: TIMER_CR2_OIS2_BIT +.. doxygendefine:: TIMER_CR2_OIS1N_BIT +.. doxygendefine:: TIMER_CR2_OIS1_BIT +.. doxygendefine:: TIMER_CR2_TI1S_BIT +.. doxygendefine:: TIMER_CR2_CCDS_BIT +.. doxygendefine:: TIMER_CR2_CCUS_BIT +.. doxygendefine:: TIMER_CR2_CCPC_BIT + +.. doxygendefine:: TIMER_CR2_OIS4 +.. doxygendefine:: TIMER_CR2_OIS3N +.. doxygendefine:: TIMER_CR2_OIS3 +.. doxygendefine:: TIMER_CR2_OIS2N +.. doxygendefine:: TIMER_CR2_OIS2 +.. doxygendefine:: TIMER_CR2_OIS1N +.. doxygendefine:: TIMER_CR2_OIS1 +.. doxygendefine:: TIMER_CR2_TI1S +.. doxygendefine:: TIMER_CR2_MMS +.. doxygendefine:: TIMER_CR2_MMS_RESET +.. doxygendefine:: TIMER_CR2_MMS_ENABLE +.. doxygendefine:: TIMER_CR2_MMS_UPDATE +.. doxygendefine:: TIMER_CR2_MMS_COMPARE_PULSE +.. doxygendefine:: TIMER_CR2_MMS_COMPARE_OC1REF +.. doxygendefine:: TIMER_CR2_MMS_COMPARE_OC2REF +.. doxygendefine:: TIMER_CR2_MMS_COMPARE_OC3REF +.. doxygendefine:: TIMER_CR2_MMS_COMPARE_OC4REF +.. doxygendefine:: TIMER_CR2_CCDS +.. doxygendefine:: TIMER_CR2_CCUS +.. doxygendefine:: TIMER_CR2_CCPC + +Slave mode control register (SMCR) +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: TIMER_SMCR_ETP_BIT +.. doxygendefine:: TIMER_SMCR_ECE_BIT +.. doxygendefine:: TIMER_SMCR_MSM_BIT + +.. doxygendefine:: TIMER_SMCR_ETP +.. doxygendefine:: TIMER_SMCR_ECE +.. doxygendefine:: TIMER_SMCR_ETPS +.. doxygendefine:: TIMER_SMCR_ETPS_OFF +.. doxygendefine:: TIMER_SMCR_ETPS_DIV2 +.. doxygendefine:: TIMER_SMCR_ETPS_DIV4 +.. doxygendefine:: TIMER_SMCR_ETPS_DIV8 +.. doxygendefine:: TIMER_SMCR_ETF +.. doxygendefine:: TIMER_SMCR_MSM +.. doxygendefine:: TIMER_SMCR_TS +.. doxygendefine:: TIMER_SMCR_TS_ITR0 +.. doxygendefine:: TIMER_SMCR_TS_ITR1 +.. doxygendefine:: TIMER_SMCR_TS_ITR2 +.. doxygendefine:: TIMER_SMCR_TS_ITR3 +.. doxygendefine:: TIMER_SMCR_TS_TI1F_ED +.. doxygendefine:: TIMER_SMCR_TS_TI1FP1 +.. doxygendefine:: TIMER_SMCR_TS_TI2FP2 +.. doxygendefine:: TIMER_SMCR_TS_ETRF +.. doxygendefine:: TIMER_SMCR_SMS +.. doxygendefine:: TIMER_SMCR_SMS_DISABLED +.. doxygendefine:: TIMER_SMCR_SMS_ENCODER1 +.. doxygendefine:: TIMER_SMCR_SMS_ENCODER2 +.. doxygendefine:: TIMER_SMCR_SMS_ENCODER3 +.. doxygendefine:: TIMER_SMCR_SMS_RESET +.. doxygendefine:: TIMER_SMCR_SMS_GATED +.. doxygendefine:: TIMER_SMCR_SMS_TRIGGER +.. doxygendefine:: TIMER_SMCR_SMS_EXTERNAL + +DMA/Interrupt enable register (DIER) +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: TIMER_DIER_TDE_BIT +.. doxygendefine:: TIMER_DIER_CC4DE_BIT +.. doxygendefine:: TIMER_DIER_CC3DE_BIT +.. doxygendefine:: TIMER_DIER_CC2DE_BIT +.. doxygendefine:: TIMER_DIER_CC1DE_BIT +.. doxygendefine:: TIMER_DIER_UDE_BIT +.. doxygendefine:: TIMER_DIER_TIE_BIT +.. doxygendefine:: TIMER_DIER_CC4IE_BIT +.. doxygendefine:: TIMER_DIER_CC3IE_BIT +.. doxygendefine:: TIMER_DIER_CC2IE_BIT +.. doxygendefine:: TIMER_DIER_CC1IE_BIT +.. doxygendefine:: TIMER_DIER_UIE_BIT + +.. doxygendefine:: TIMER_DIER_TDE +.. doxygendefine:: TIMER_DIER_CC4DE +.. doxygendefine:: TIMER_DIER_CC3DE +.. doxygendefine:: TIMER_DIER_CC2DE +.. doxygendefine:: TIMER_DIER_CC1DE +.. doxygendefine:: TIMER_DIER_UDE +.. doxygendefine:: TIMER_DIER_TIE +.. doxygendefine:: TIMER_DIER_CC4IE +.. doxygendefine:: TIMER_DIER_CC3IE +.. doxygendefine:: TIMER_DIER_CC2IE +.. doxygendefine:: TIMER_DIER_CC1IE +.. doxygendefine:: TIMER_DIER_UIE + +Status register (SR) +~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: TIMER_SR_CC4OF_BIT +.. doxygendefine:: TIMER_SR_CC3OF_BIT +.. doxygendefine:: TIMER_SR_CC2OF_BIT +.. doxygendefine:: TIMER_SR_CC1OF_BIT +.. doxygendefine:: TIMER_SR_BIF_BIT +.. doxygendefine:: TIMER_SR_TIF_BIT +.. doxygendefine:: TIMER_SR_COMIF_BIT +.. doxygendefine:: TIMER_SR_CC4IF_BIT +.. doxygendefine:: TIMER_SR_CC3IF_BIT +.. doxygendefine:: TIMER_SR_CC2IF_BIT +.. doxygendefine:: TIMER_SR_CC1IF_BIT +.. doxygendefine:: TIMER_SR_UIF_BIT + +.. doxygendefine:: TIMER_SR_CC4OF +.. doxygendefine:: TIMER_SR_CC3OF +.. doxygendefine:: TIMER_SR_CC2OF +.. doxygendefine:: TIMER_SR_CC1OF +.. doxygendefine:: TIMER_SR_BIF +.. doxygendefine:: TIMER_SR_TIF +.. doxygendefine:: TIMER_SR_COMIF +.. doxygendefine:: TIMER_SR_CC4IF +.. doxygendefine:: TIMER_SR_CC3IF +.. doxygendefine:: TIMER_SR_CC2IF +.. doxygendefine:: TIMER_SR_CC1IF +.. doxygendefine:: TIMER_SR_UIF + +Event generation register (EGR) +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: TIMER_EGR_TG_BIT +.. doxygendefine:: TIMER_EGR_CC4G_BIT +.. doxygendefine:: TIMER_EGR_CC3G_BIT +.. doxygendefine:: TIMER_EGR_CC2G_BIT +.. doxygendefine:: TIMER_EGR_CC1G_BIT +.. doxygendefine:: TIMER_EGR_UG_BIT + +.. doxygendefine:: TIMER_EGR_TG +.. doxygendefine:: TIMER_EGR_CC4G +.. doxygendefine:: TIMER_EGR_CC3G +.. doxygendefine:: TIMER_EGR_CC2G +.. doxygendefine:: TIMER_EGR_CC1G +.. doxygendefine:: TIMER_EGR_UG + +Capture/compare mode registers, common values +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: TIMER_CCMR_CCS_OUTPUT +.. doxygendefine:: TIMER_CCMR_CCS_INPUT_TI1 +.. doxygendefine:: TIMER_CCMR_CCS_INPUT_TI2 +.. doxygendefine:: TIMER_CCMR_CCS_INPUT_TRC + +Capture/compare mode register 1 (CCMR1) +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: TIMER_CCMR1_OC2CE_BIT +.. doxygendefine:: TIMER_CCMR1_OC2PE_BIT +.. doxygendefine:: TIMER_CCMR1_OC2FE_BIT +.. doxygendefine:: TIMER_CCMR1_OC1CE_BIT +.. doxygendefine:: TIMER_CCMR1_OC1PE_BIT +.. doxygendefine:: TIMER_CCMR1_OC1FE_BIT + +.. doxygendefine:: TIMER_CCMR1_OC2CE +.. doxygendefine:: TIMER_CCMR1_OC2M +.. doxygendefine:: TIMER_CCMR1_IC2F +.. doxygendefine:: TIMER_CCMR1_OC2PE +.. doxygendefine:: TIMER_CCMR1_OC2FE +.. doxygendefine:: TIMER_CCMR1_IC2PSC +.. doxygendefine:: TIMER_CCMR1_CC2S +.. doxygendefine:: TIMER_CCMR1_CC2S_OUTPUT +.. doxygendefine:: TIMER_CCMR1_CC2S_INPUT_TI1 +.. doxygendefine:: TIMER_CCMR1_CC2S_INPUT_TI2 +.. doxygendefine:: TIMER_CCMR1_CC2S_INPUT_TRC +.. doxygendefine:: TIMER_CCMR1_OC1CE +.. doxygendefine:: TIMER_CCMR1_OC1M +.. doxygendefine:: TIMER_CCMR1_IC1F +.. doxygendefine:: TIMER_CCMR1_OC1PE +.. doxygendefine:: TIMER_CCMR1_OC1FE +.. doxygendefine:: TIMER_CCMR1_IC1PSC +.. doxygendefine:: TIMER_CCMR1_CC1S +.. doxygendefine:: TIMER_CCMR1_CC1S_OUTPUT +.. doxygendefine:: TIMER_CCMR1_CC1S_INPUT_TI1 +.. doxygendefine:: TIMER_CCMR1_CC1S_INPUT_TI2 +.. doxygendefine:: TIMER_CCMR1_CC1S_INPUT_TRC + +Capture/compare mode register 2 (CCMR2) +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: TIMER_CCMR2_OC4CE_BIT +.. doxygendefine:: TIMER_CCMR2_OC4PE_BIT +.. doxygendefine:: TIMER_CCMR2_OC4FE_BIT +.. doxygendefine:: TIMER_CCMR2_OC3CE_BIT +.. doxygendefine:: TIMER_CCMR2_OC3PE_BIT +.. doxygendefine:: TIMER_CCMR2_OC3FE_BIT + +.. doxygendefine:: TIMER_CCMR2_OC4CE +.. doxygendefine:: TIMER_CCMR2_OC4M +.. doxygendefine:: TIMER_CCMR2_IC2F +.. doxygendefine:: TIMER_CCMR2_OC4PE +.. doxygendefine:: TIMER_CCMR2_OC4FE +.. doxygendefine:: TIMER_CCMR2_IC2PSC +.. doxygendefine:: TIMER_CCMR2_CC4S +.. doxygendefine:: TIMER_CCMR1_CC4S_OUTPUT +.. doxygendefine:: TIMER_CCMR1_CC4S_INPUT_TI1 +.. doxygendefine:: TIMER_CCMR1_CC4S_INPUT_TI2 +.. doxygendefine:: TIMER_CCMR1_CC4S_INPUT_TRC +.. doxygendefine:: TIMER_CCMR2_OC3CE +.. doxygendefine:: TIMER_CCMR2_OC3M +.. doxygendefine:: TIMER_CCMR2_IC1F +.. doxygendefine:: TIMER_CCMR2_OC3PE +.. doxygendefine:: TIMER_CCMR2_OC3FE +.. doxygendefine:: TIMER_CCMR2_IC1PSC +.. doxygendefine:: TIMER_CCMR2_CC3S +.. doxygendefine:: TIMER_CCMR1_CC3S_OUTPUT +.. doxygendefine:: TIMER_CCMR1_CC3S_INPUT_TI1 +.. doxygendefine:: TIMER_CCMR1_CC3S_INPUT_TI2 +.. doxygendefine:: TIMER_CCMR1_CC3S_INPUT_TRC + +Capture/compare enable register (CCER) +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: TIMER_CCER_CC4P_BIT +.. doxygendefine:: TIMER_CCER_CC4E_BIT +.. doxygendefine:: TIMER_CCER_CC3P_BIT +.. doxygendefine:: TIMER_CCER_CC3E_BIT +.. doxygendefine:: TIMER_CCER_CC2P_BIT +.. doxygendefine:: TIMER_CCER_CC2E_BIT +.. doxygendefine:: TIMER_CCER_CC1P_BIT +.. doxygendefine:: TIMER_CCER_CC1E_BIT + +.. doxygendefine:: TIMER_CCER_CC4P +.. doxygendefine:: TIMER_CCER_CC4E +.. doxygendefine:: TIMER_CCER_CC3P +.. doxygendefine:: TIMER_CCER_CC3E +.. doxygendefine:: TIMER_CCER_CC2P +.. doxygendefine:: TIMER_CCER_CC2E +.. doxygendefine:: TIMER_CCER_CC1P +.. doxygendefine:: TIMER_CCER_CC1E + +Break and dead-time register (BDTR) +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: TIMER_BDTR_MOE_BIT +.. doxygendefine:: TIMER_BDTR_AOE_BIT +.. doxygendefine:: TIMER_BDTR_BKP_BIT +.. doxygendefine:: TIMER_BDTR_BKE_BIT +.. doxygendefine:: TIMER_BDTR_OSSR_BIT +.. doxygendefine:: TIMER_BDTR_OSSI_BIT + +.. doxygendefine:: TIMER_BDTR_MOE +.. doxygendefine:: TIMER_BDTR_AOE +.. doxygendefine:: TIMER_BDTR_BKP +.. doxygendefine:: TIMER_BDTR_BKE +.. doxygendefine:: TIMER_BDTR_OSSR +.. doxygendefine:: TIMER_BDTR_OSSI +.. doxygendefine:: TIMER_BDTR_LOCK +.. doxygendefine:: TIMER_BDTR_LOCK_OFF +.. doxygendefine:: TIMER_BDTR_LOCK_LEVEL1 +.. doxygendefine:: TIMER_BDTR_LOCK_LEVEL2 +.. doxygendefine:: TIMER_BDTR_LOCK_LEVEL3 +.. doxygendefine:: TIMER_BDTR_DTG + +DMA control register (DCR) +~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: TIMER_DCR_DBL +.. doxygendefine:: TIMER_DCR_DBL_1BYTE +.. doxygendefine:: TIMER_DCR_DBL_2BYTE +.. doxygendefine:: TIMER_DCR_DBL_3BYTE +.. doxygendefine:: TIMER_DCR_DBL_4BYTE +.. doxygendefine:: TIMER_DCR_DBL_5BYTE +.. doxygendefine:: TIMER_DCR_DBL_6BYTE +.. doxygendefine:: TIMER_DCR_DBL_7BYTE +.. doxygendefine:: TIMER_DCR_DBL_8BYTE +.. doxygendefine:: TIMER_DCR_DBL_9BYTE +.. doxygendefine:: TIMER_DCR_DBL_10BYTE +.. doxygendefine:: TIMER_DCR_DBL_11BYTE +.. doxygendefine:: TIMER_DCR_DBL_12BYTE +.. doxygendefine:: TIMER_DCR_DBL_13BYTE +.. doxygendefine:: TIMER_DCR_DBL_14BYTE +.. doxygendefine:: TIMER_DCR_DBL_15BYTE +.. doxygendefine:: TIMER_DCR_DBL_16BYTE +.. doxygendefine:: TIMER_DCR_DBL_17BYTE +.. doxygendefine:: TIMER_DCR_DBL_18BYTE +.. doxygendefine:: TIMER_DCR_DBA +.. doxygendefine:: TIMER_DCR_DBA_CR1 +.. doxygendefine:: TIMER_DCR_DBA_CR2 +.. doxygendefine:: TIMER_DCR_DBA_SMCR +.. doxygendefine:: TIMER_DCR_DBA_DIER +.. doxygendefine:: TIMER_DCR_DBA_SR +.. doxygendefine:: TIMER_DCR_DBA_EGR +.. doxygendefine:: TIMER_DCR_DBA_CCMR1 +.. doxygendefine:: TIMER_DCR_DBA_CCMR2 +.. doxygendefine:: TIMER_DCR_DBA_CCER +.. doxygendefine:: TIMER_DCR_DBA_CNT +.. doxygendefine:: TIMER_DCR_DBA_PSC +.. doxygendefine:: TIMER_DCR_DBA_ARR +.. doxygendefine:: TIMER_DCR_DBA_RCR +.. doxygendefine:: TIMER_DCR_DBA_CCR1 +.. doxygendefine:: TIMER_DCR_DBA_CCR2 +.. doxygendefine:: TIMER_DCR_DBA_CCR3 +.. doxygendefine:: TIMER_DCR_DBA_CCR4 +.. doxygendefine:: TIMER_DCR_DBA_BDTR +.. doxygendefine:: TIMER_DCR_DBA_DCR +.. doxygendefine:: TIMER_DCR_DBA_DMAR diff --git a/docs/source/libmaple/api/usart.rst b/docs/source/libmaple/api/usart.rst new file mode 100644 index 0000000..68f2c37 --- /dev/null +++ b/docs/source/libmaple/api/usart.rst @@ -0,0 +1,197 @@ +.. highlight:: c +.. _libmaple-usart: + +``usart.h`` +=========== + +Universal Synchronous/Asynchronous Receiver/Transmitter (USART, or +commonly *serial port*) support. + +.. contents:: Contents + :local: + +Types +----- + +.. doxygenstruct:: usart_reg_map +.. doxygenstruct:: usart_dev + +Devices +------- + +.. doxygenvariable:: USART1 +.. doxygenvariable:: USART2 +.. doxygenvariable:: USART3 +.. doxygenvariable:: UART4 +.. doxygenvariable:: UART5 + +Functions +--------- + +.. doxygenfunction:: usart_init +.. doxygenfunction:: usart_set_baud_rate +.. doxygenfunction:: usart_enable +.. doxygenfunction:: usart_disable +.. doxygenfunction:: usart_disable_all +.. doxygenfunction:: usart_foreach +.. doxygenfunction:: usart_rx +.. doxygenfunction:: usart_tx +.. doxygenfunction:: usart_putudec +.. doxygenfunction:: usart_putc +.. doxygenfunction:: usart_putstr +.. doxygenfunction:: usart_getc +.. doxygenfunction:: usart_data_available +.. doxygenfunction:: usart_reset_rx + +Register Map Base Pointers +-------------------------- + +.. doxygendefine:: USART1_BASE +.. doxygendefine:: USART2_BASE +.. doxygendefine:: USART3_BASE +.. doxygendefine:: UART4_BASE +.. doxygendefine:: UART5_BASE + +Register Bit Definitions +------------------------ + +Status Register +~~~~~~~~~~~~~~~ + +.. doxygendefine:: USART_SR_CTS_BIT +.. doxygendefine:: USART_SR_LBD_BIT +.. doxygendefine:: USART_SR_TXE_BIT +.. doxygendefine:: USART_SR_TC_BIT +.. doxygendefine:: USART_SR_RXNE_BIT +.. doxygendefine:: USART_SR_IDLE_BIT +.. doxygendefine:: USART_SR_ORE_BIT +.. doxygendefine:: USART_SR_NE_BIT +.. doxygendefine:: USART_SR_FE_BIT +.. doxygendefine:: USART_SR_PE_BIT + +.. doxygendefine:: USART_SR_CTS +.. doxygendefine:: USART_SR_LBD +.. doxygendefine:: USART_SR_TXE +.. doxygendefine:: USART_SR_TC +.. doxygendefine:: USART_SR_RXNE +.. doxygendefine:: USART_SR_IDLE +.. doxygendefine:: USART_SR_ORE +.. doxygendefine:: USART_SR_NE +.. doxygendefine:: USART_SR_FE +.. doxygendefine:: USART_SR_PE + +Data register +~~~~~~~~~~~~~ + +.. doxygendefine:: USART_DR_DR + +Baud Rate Register +~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: USART_BRR_DIV_MANTISSA +.. doxygendefine:: USART_BRR_DIV_FRACTION + +Control Register 1 +~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: USART_CR1_UE_BIT +.. doxygendefine:: USART_CR1_M_BIT +.. doxygendefine:: USART_CR1_WAKE_BIT +.. doxygendefine:: USART_CR1_PCE_BIT +.. doxygendefine:: USART_CR1_PS_BIT +.. doxygendefine:: USART_CR1_PEIE_BIT +.. doxygendefine:: USART_CR1_TXEIE_BIT +.. doxygendefine:: USART_CR1_TCIE_BIT +.. doxygendefine:: USART_CR1_RXNEIE_BIT +.. doxygendefine:: USART_CR1_IDLEIE_BIT +.. doxygendefine:: USART_CR1_TE_BIT +.. doxygendefine:: USART_CR1_RE_BIT +.. doxygendefine:: USART_CR1_RWU_BIT +.. doxygendefine:: USART_CR1_SBK_BIT + +.. doxygendefine:: USART_CR1_UE +.. doxygendefine:: USART_CR1_M +.. doxygendefine:: USART_CR1_WAKE +.. doxygendefine:: USART_CR1_WAKE_IDLE +.. doxygendefine:: USART_CR1_WAKE_ADDR +.. doxygendefine:: USART_CR1_PCE +.. doxygendefine:: USART_CR1_PS +.. doxygendefine:: USART_CR1_PS_EVEN +.. doxygendefine:: USART_CR1_PS_ODD +.. doxygendefine:: USART_CR1_PEIE +.. doxygendefine:: USART_CR1_TXEIE +.. doxygendefine:: USART_CR1_TCIE +.. doxygendefine:: USART_CR1_RXNEIE +.. doxygendefine:: USART_CR1_IDLEIE +.. doxygendefine:: USART_CR1_TE +.. doxygendefine:: USART_CR1_RE +.. doxygendefine:: USART_CR1_RWU +.. doxygendefine:: USART_CR1_RWU_ACTIVE +.. doxygendefine:: USART_CR1_RWU_MUTE +.. doxygendefine:: USART_CR1_SBK + +Control Register 2 +~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: USART_CR2_LINEN_BIT +.. doxygendefine:: USART_CR2_CLKEN_BIT +.. doxygendefine:: USART_CR2_CPOL_BIT +.. doxygendefine:: USART_CR2_CPHA_BIT +.. doxygendefine:: USART_CR2_LBCL_BIT +.. doxygendefine:: USART_CR2_LBDIE_BIT +.. doxygendefine:: USART_CR2_LBDL_BIT + +.. doxygendefine:: USART_CR2_LINEN +.. doxygendefine:: USART_CR2_STOP +.. doxygendefine:: USART_CR2_STOP_BITS_1 +.. doxygendefine:: USART_CR2_STOP_BITS_POINT_5 +.. doxygendefine:: USART_CR2_STOP_BITS_1_POINT_5 +.. doxygendefine:: USART_CR2_STOP_BITS_2 +.. doxygendefine:: USART_CR2_CLKEN +.. doxygendefine:: USART_CR2_CPOL +.. doxygendefine:: USART_CR2_CPOL_LOW +.. doxygendefine:: USART_CR2_CPOL_HIGH +.. doxygendefine:: USART_CR2_CPHA +.. doxygendefine:: USART_CR2_CPHA_FIRST +.. doxygendefine:: USART_CR2_CPHA_SECOND +.. doxygendefine:: USART_CR2_LBCL +.. doxygendefine:: USART_CR2_LBDIE +.. doxygendefine:: USART_CR2_LBDL +.. doxygendefine:: USART_CR2_LBDL_10_BIT +.. doxygendefine:: USART_CR2_LBDL_11_BIT +.. doxygendefine:: USART_CR2_ADD + +Control Register 3 +~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: USART_CR3_CTSIE_BIT +.. doxygendefine:: USART_CR3_CTSE_BIT +.. doxygendefine:: USART_CR3_RTSE_BIT +.. doxygendefine:: USART_CR3_DMAT_BIT +.. doxygendefine:: USART_CR3_DMAR_BIT +.. doxygendefine:: USART_CR3_SCEN_BIT +.. doxygendefine:: USART_CR3_NACK_BIT +.. doxygendefine:: USART_CR3_HDSEL_BIT +.. doxygendefine:: USART_CR3_IRLP_BIT +.. doxygendefine:: USART_CR3_IREN_BIT +.. doxygendefine:: USART_CR3_EIE_BIT + +.. doxygendefine:: USART_CR3_CTSIE +.. doxygendefine:: USART_CR3_CTSE +.. doxygendefine:: USART_CR3_RTSE +.. doxygendefine:: USART_CR3_DMAT +.. doxygendefine:: USART_CR3_DMAR +.. doxygendefine:: USART_CR3_SCEN +.. doxygendefine:: USART_CR3_NACK +.. doxygendefine:: USART_CR3_HDSEL +.. doxygendefine:: USART_CR3_IRLP +.. doxygendefine:: USART_CR3_IRLP_NORMAL +.. doxygendefine:: USART_CR3_IRLP_LOW_POWER +.. doxygendefine:: USART_CR3_IREN +.. doxygendefine:: USART_CR3_EIE + +Guard Time and Prescaler Register +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. doxygendefine:: USART_GTPR_GT +.. doxygendefine:: USART_GTPR_PSC diff --git a/docs/source/libmaple/api/util.rst b/docs/source/libmaple/api/util.rst new file mode 100644 index 0000000..54377c0 --- /dev/null +++ b/docs/source/libmaple/api/util.rst @@ -0,0 +1,54 @@ +.. highlight:: c +.. _libmaple-util: + +``<libmaple/util.h>`` +===================== + +.. TODO [0.2.0?] clean this up. + +Miscellaneous utility macros and procedures. + +.. contents:: Contents + :local: + +Bit Manipulation +---------------- + +The following macros are useful for bit manipulation. + +.. doxygendefine:: BIT +.. doxygendefine:: BIT_MASK_SHIFT +.. doxygendefine:: GET_BITS +.. doxygendefine:: IS_POWER_OF_TWO + +Failure Routines +---------------- + +``throb()`` is called by various routines to throb a built-in +LED. **Usually, you shouldn't call it yourself**; use something like +``ASSERT(0)`` (or the libc ``abort()`` function) instead. + +.. doxygenfunction:: throb + +Asserts and Debug Levels +------------------------ + +The level of libmaple's assertion support is determined by +``DEBUG_LEVEL``, as follows: + +.. doxygendefine:: DEBUG_LEVEL + +The current assert macros are ``ASSERT()`` and ``ASSERT_FAULT()``. +``ASSERT()`` is checked when ``DEBUG_LEVEL >= DEBUG_ALL``. +``ASSERT_FAULT()`` is checked whenever ``DEBUG_LEVEL >= DEBUG_FAULT``. + +As explained above, an assert macro is checked when the current +``DEBUG_LEVEL`` is high enough. If the debug level is too low, the +macro expands into a no-op that gets compiled away. + +If an assertion fails, execution is halted at the point of the failed +assertion. When libmaple has been configured properly (Wirish +performs this configuration by default), the built-in LED throbs in a +smooth pattern to signal the failed assertion (using +:c:func:`throb()`), and the file and line where the assert failed are +transmitted to the user as detailed in :ref:`lang-assert`. diff --git a/docs/source/libmaple/apis.rst b/docs/source/libmaple/apis.rst new file mode 100644 index 0000000..31f4902 --- /dev/null +++ b/docs/source/libmaple/apis.rst @@ -0,0 +1,14 @@ +.. _libmaple-apis: + +``libmaple`` API Index +====================== + +This is the master index for libmaple proper's APIs. + +**Contents** + +.. toctree:: + :maxdepth: 1 + :glob: + + api/* diff --git a/docs/source/libmaple/coding-standard.rst b/docs/source/libmaple/coding-standard.rst new file mode 100644 index 0000000..9ed56cc --- /dev/null +++ b/docs/source/libmaple/coding-standard.rst @@ -0,0 +1,422 @@ +.. _libmaple-coding-standard: + +Coding Standard +=============== + +This page documents the coding standard for :ref:`libmaple`. It's +intended as a guide for how you should structure any code you would +like included into the LeafLabs releases of libmaple. + +LeafLabs team members are required to follow these when producing new +code. Community contributors to libmaple are strongly encouraged to +do so; following these rules will greatly increase the probability +that your patches will be folded in. + +In general, follow this guide unless there's a very good reason not +to. Laziness doesn't count as a good reason. Most, if not all, of +these decisions are entirely arbitrary, but it's important for +readability that we be consistent. (If you notice an inconsistency, +you should fix it). + +Note that the file ``.dir-locals.el`` in the libmaple root directory +already ensures that many of these standards are followed by default +in Emacs (but not on Windows, where it would need to be named +``_dir_locals.el``, and no way, man). There's also some elisp +scattered about this file which will provide you additional help. + +Configuration for other editors (vim, etc.) would be nice! + +.. contents:: Contents + :local: + +License +------- + +.. highlight:: scheme + +Put an MIT license at the beginning of the file (look at any of our +source files for an example). Copyright should go either to you or to +LeafLabs, LLC. + +Emacs: if you don't like seeing the license, you should use elide-head +(which will hide it for you). You can use the following:: + + (require 'elide-head) + (setq programming-mode-hooks '(c-mode-hook c++-mode-hook)) + (add-to-list 'elide-head-headers-to-hide + '("The MIT License" . "DEALINGS IN\n [*] THE SOFTWARE")) + (add-to-list 'elide-head-headers-to-hide + '("The MIT License" . "DEALINGS IN THE\n...SOFTWARE")) + (dolist (hook programming-mode-hooks) + (add-hook hook (lambda () (elide-head)))) + +Whitespace +---------- + +TextMate users may find `this bundle +<https://github.com/glennr/uber-glory-tmbundle>`_ useful for +automatically converting tabs to spaces and removing trailing +whitespace at save time. + +- 4 space indents (set in ``.dir-locals.el``). + +- Unix newlines. + +- No tab characters (set in ``.dir-locals.el``). + +- No trailing whitespace. For help getting this (and no tab + characters) done automatically in Emacs, you can use + `code-fascism.el <https://github.com/mbolivar/code-fascism>`_. + +- Files end in exactly one newline. The presence of a newline at EOF + is already done by ``c-require-final-newline`` in recent versions of + Emacs. + +- Exactly two newlines separate source paragraphs (you do separate + your code into paragraphs, don't you?). + +- The first line in a function is non-blank. + +.. highlight:: cpp + +- Exactly one space after ``if``, ``else``, ``for``, and ``while``, + before the following ``{`` or ``(``. One space before ``else``, + after the preceding ``}``. For example:: + + // This is good; we like this: + if (foo) { + while (quux) { + bar(); + } + } else { + baz(); + } + + // THIS IS BAD! DON'T DO THIS: + if(foo){ + while(quux){ + bar(); + } + }else{ + baz(); + } + +- Exactly one space in between binary arithmetic, logical, and + comparison operators and their operands. Examples:: + + // This is good: + int x = a + b * (c - d); + if (x != 0 && a > 7) { + SerialUSB.println(x); + } + + // THIS IS BAD! + int x = a+b*(c-d); + if (x!=0 && a>7) { + SerialUSB.println(x); + } + + // This is good: + uint32 adc_data = ADC1_BASE->DR; + SerialUSB.println(adc_data); + + // THIS IS BAD! + uint32 adc_data = ADC1_BASE -> DR; + SerialUSB . println(adc_data); + +- No space between a unary operator and its operand. Examples:: + + // Good: + x++; + + // BAD! + x ++; + + // Good: + y = -x; + + // BAD! + y = - x; + +- If you need to break up a long line: + + * Prefer to break up long expressions after a binary operator. Example:: + + // Good: + if (some_really_long_conditional_wow_this_really_goes_on_forever || + maybe_something_else_could_happen_too) { + ... + } + + // BAD! + if (some_really_long_conditional_wow_this_really_goes_on_forever + || maybe_something_else_could_happen_too) { + ... + } + + * When breaking up a function's arguments over multiple lines, align + the arguments on subsequent lines with the first argument. + Example:: + + // Good: + return_type value_i_got = function_with_a_really_long_name(argument1, + argument2, + argument3); + + // BAD! + return_type value_i_got = function_with_a_really_long_name(argument1, + argument2, + argument3); + + // BAD! + return_type value_i_got = function_with_a_really_long_name(argument1, + argument2, + argument3); + +- In function invocations, no space in between the function name and + the opening parenthesis. Example:: + + // Good: + SerialUSB.println("Hello, world!"); + + // BAD! + SerialUSB.println ("Hello, world!"); + +- Don't indent C code within a conditionally-compiled ``extern "C"`` + block. Example:: + + // Good: + #ifdef __cplusplus + extern "C"{ + #endif + + void some_c_function(void); + + #ifdef __cplusplus + } // extern "C" + #endif + + // BAD! + #ifdef __cplusplus + extern "C"{ + #endif + + void some_c_function(void); + + #ifdef __cplusplus + } // extern "C" + #endif + + Emacs does the "bad" behavior by default, which can be very + annoying. You can turn this off with :: + + (defun c-mode-inextern-lang-hook () + (setcdr (assq 'inextern-lang c-offsets-alist) '-)) + (add-hook 'c-mode-hook c-mode-inextern-lang-hook) + +Comments +-------- + +.. highlight:: c++ + +- Multi-line comments are pretty flexible. Any of these is fine:: + + /* Comment starts here. + * Continued lines have a '*' before them. + * The comment can end after the last line. + */ + + /* Comment starts here. + * The comment can end on the same line. */ + + /* + * You can also place a newline after the opening "/*". + */ + +- Doxygen comments are multi-line comments that begin with ``/**`` + instead. + +- Single-line comments are up to you. + +Braces +------ + +- Mostly `1TBS + <http://en.wikipedia.org/wiki/Indent_style#Variant:_1TBS>`_. The + only difference is that the opening brace of a function's definition + occurs exactly one space character after the closing parenthesis in + that function's parameter list. Example:: + + void func(void) { + ... + } + +Naming conventions +------------------ + +We'll handle the usual casing/underscore debate as follows. + +- First, ``Dont_Mix_Like_This``, because ``It_Looks_Really_Ugly``, ok? + [There's been some debate about this, and some exceptions are + already grandfathered in, so in order to settle it, let's call this + a "recommendation" instead of "requirement".] + +- Variables: Use underscores to separate words in C identifiers:: + + int some_example_name; + + User-facing C++ variables should be camel cased + (``thisIsAnExample``, ``boardPWMPins``, etc.), for consistency with + the Arduino style. It's probably a good idea for you to case + non-user facing C++ variables in the C style; this will help + disambiguate what's part of the Wirish API and what's not. + +- Classes: Pascal case. So ``ThisIsAClassName``, but ``thisIsNot``, + ``this_is_not``, and ``Dont_You_DareTryANYTHING_STUPID``. + +- Functions: C functions are all lowercase, and words are separated by + underscores. C++ method names are camel cased. + +- Structs: Usually like variables (``adc_dev``, ``adc_reg_map``, + etc.), but it's not crucial. Don't feel obliged to put ``_t`` at + the end of the type name; we don't. + +- Macros and constants: all caps, separated by underscores. C++ + variables with the ``const`` qualifier generally aren't considered + "constants" for the purposes of this rule; i.e., they are cased + according to the rules for variables. We make an exception for + ``PIN_MAP``, because it's the central Wirish data structure. + +- foo.h gets ``#ifdef``\ 'ed to ``_FOO_H_``. + +- Acronyms: The case of letters in an acronym is determined by the + case of the first letter in the acronym, which is determined by + following the above rules. Examples:: + + // Good: + void usb_func() { ... } + void frob_usb_disc() { ... } + class SomethingUSB { + void usbInit(); + void initUSB(); + }; + + // BAD: + class BadUsb { ... }; // say "GoodUSB" instead + void swizzle_USB_disc() { ... } // say "swizzle_usb_disc" instead + +Documentation +------------- + +- Doxygen comments on every user-facing function and type. + Additionally, individually document the fields and enumerator values + of nontrivial user-facing structs and enums. See any register map + type's definition for an example. + +- For libmaple proper, you don't need comments for each register bit + definition, since that's just repeating information better obtained + by reading ST RM0008. + +- Doxygen comments generally only belong on types, functions, + etc. that are part of the public user-facing API. + + This essentially means that if what you're writing is going to be + documented under http://leaflabs.com/docs/ (i.e., if there's `Sphinx + documentation <http://sphinx.pocoo.org/>`_ for it in the + `leaflabs-docs <https://github.com/leaflabs/leaflabs-docs>`_ + repository), then you need to write Doxygen comments. Further, + those Sphinx docs should use Breathe to pull the Doxygen out. (For + more information on this, see the `leaflabs-docs README + <https://raw.github.com/leaflabs/leaflabs-docs/master/README>`_). + + Because Breathe isn't totally mature yet, you won't always be able + to do this. In these cases, document the code "manually" using the + Sphinx `C and C++ domains + <http://sphinx.pocoo.org/domains.html#the-c-domain>`_. This should + be avoided if at all possible, since it creates a maintenance burden + of documenting things in two places at once, and makes it easier for + documentation to go stale. + + If you do have to document something manually, put a comment in the + source file informing future maintainers about it, so they'll pay + extra attention when making changes. + +- When adding peripheral support, it would be nice if you put + longer-form comments into the libmaple ``notes/`` directory, with a + comment in the corresponding .h file referring to it. See the + :ref:`dac.h <libmaple-dac>` source for an example. + + This lets us keep the source files relatively free of "introductory" + material, while allowing new readers a convenient starting point. + These longer-form notes also have a habit of turning into official, + user-facing documentation (or `wiki <http://wiki.leaflabs.com>`_ + pages). + +- **For libmaple proper**, the convention is to document any + user-facing function at the point where it is defined. In + particular, this means you should document an externally-linked + function defined in a .c file in that .c file, not in the header + file where it is declared to the user. + + **For Wirish**, the convention is to put the documentation in the + header file where the function is declared. + +General Formatting +------------------ + +.. highlight:: scheme + +- Keep it 80-column clean. + + Emacs users: this means that the largest column number is 79. You + should turn on column number mode to help you out:: + + (column-number-mode 1) + + You can get more help from `lineker-mode + <http://www.helsinki.fi/~sjpaavol/programs/lineker.el>`_. Just put + lineker.el somewhere in your load-path, and:: + + (require 'lineker) + (dolist (hook '(c-mode-hook c++-mode-hook)) + (add-hook hook (lambda () (lineker-mode 1)))) + +.. highlight:: cpp + +Language Features +----------------- + +In libmaple proper, aim for C99 compatibility. Some GCC extensions +are OK, but `don't get crazy <http://www.youtube.com/watch?v=jZkdcYlOn5M>`_. + +Explicitly approved GCC extensions: + + * `asm volatile <http://gcc.gnu.org/onlinedocs/gcc/Extended-Asm.html>`_ + + * `Nested functions <http://gcc.gnu.org/onlinedocs/gcc/Nested-Functions.html>`_ + +In Wirish, generally be very conservative when using C++ features that +aren't part of C. We are forced to use C++ for Arduino compatibility +(and the general Arduino style of conflating objects and libraries), +but it's an angry beast, and we don't want to provoke it. **The +mantra is "C with classes"**. + +Explicitly approved C++ features: + + * Initializers that aren't constant; e.g. the ``gpio_dev*`` values + in a ``PIN_MAP``. + + * Default arguments: e.g., the timeout argument in + :ref:`lang-waitforbuttonpress`. + +Explicitly forbidden C++ features: + + * Templates + +Conditionally allowed C++ features: + + * Operator overloading: Never allowed when it's just for style. + Probably fine when you're implementing a class that models a + mathematical structure, and you'd like to implement + e.g. ``operator+()``. + diff --git a/docs/source/libmaple/contributing.rst b/docs/source/libmaple/contributing.rst new file mode 100644 index 0000000..25c6c17 --- /dev/null +++ b/docs/source/libmaple/contributing.rst @@ -0,0 +1,176 @@ +.. _libmaple-contributing: + +Contributing to libmaple +======================== + +First of all, thanks! Community contributions are what makes open +source great. + +If your patch is minor (you've found a typo, you've added a new +function, etc.), feel free to just make a `forum post +<http://forums.leaflabs.com>`_ describing your changes. + +If your changes are larger (you wrote a new library, you added support +for a new peripheral, etc.), we'd prefer you submit a pull request on +GitHub or send us a nicely-formatted patch via email. + +.. contents:: Contents + :local: + +.. _libmaple-faq-patches-preparing: + +Preparing Your Patch +-------------------- + +Before submitting a patch, please make sure it complies with the +:ref:`coding standard <libmaple-coding-standard>`. Consistent style throughout +the source tree is an important implementation objective for us, and a +patch that doesn't comply with the coding standard we've set forth is +likely to be sent back until it follows the standard. + +We would prefer if you release each new file you submit under the `MIT +license <http://www.opensource.org/licenses/mit-license.php>`_. See +e.g. `bkp.h +<https://github.com/leaflabs/libmaple/blob/master/libmaple/bkp.h#L1>`_ +for an example, and the coding standard for more details. Code +released under the `Lesser GPL +<http://www.gnu.org/copyleft/lesser.html>`_ may be accepted for +Wirish, but will almost certainly be rejected for libmaple proper. We +will not accept patches released under the `GPL +<http://www.gnu.org/licenses/gpl.html>`_. + +**We're not against the GPL**! It just doesn't suit our purposes for +libmaple. If you're interested in a GPLed library for ST +microcontrollers, check out `libopenstm32 +<http://www.hermann-uwe.de/blog/libopenstm32-a-free-software-firmware-library-for-stm32-arm-cortex-m3-microcontrollers>`_. +Also note that :ref:`libraries <libraries>` released under the GPL are +fine, we just don't want any core libmaple or Wirish code to be GPLed. + +.. _libmaple-faq-patches-github: + +Submitting Via GitHub Pull Request (Preferred) +---------------------------------------------- + +The most convenient way for you to contribute patches is to submit a +pull request on `GitHub <https://github.com>`_. Github provides +excellent code review interfaces, which will make it easy for us at +LeafLabs to communicate with you (and each other) about your patch. +It also makes it easy for us to merge your patch into the libmaple +source tree when the time comes. + +The steps to submit a pull request are as follows: + +1. If you don't already have one, get a `GitHub account + <https://github.com/plans>`_ (free). + +2. Fork libmaple, then clone your fork to the computer you code on. + GitHub provides detailed instructions on `forking and cloning a + repository <http://help.github.com/fork-a-repo/>`_. + +3. Push your commits to your GitHub libmaple fork (see instructions + linked in Step 2 for a step-by-step walkthrough on how to do this). + + Please add a signed-off-by line to your commits which certify your + `developer certificate of origin + <http://elinux.org/Developer_Certificate_Of_Origin>`_ [#fcert]_. + For example, if your name is "John Smith", and your email address + is "jsmith@example.com", just include the following line at the + bottom of your commit messages: + + ``Signed-off-by: John Smith <jsmith@example.com>`` + + If you've configured Git to know your name and email, you can + instruct it to insert this line automatically by calling ``git + commit`` with the ``-s`` flag. + +4. `Submit a pull request <http://help.github.com/pull-requests/>`_ to + the LeafLabs version of libmaple. + +.. _libmaple-faq-patches-email: + +Submitting Via Email +-------------------- + +If you're unfamiliar with Git or would prefer not to use GitHub, you +can always send us a patch via email at info@leaflabs.com. We'd love +it if you used the `Linux kernel patch format +<http://linux.yyz.us/patch-format.html>`_, but please at least include +the following information in your email: + +1. How you generated your patch (arguments to ``diff``, etc.) + +2. What git branch/commit or libmaple version your patch applies to + +3. A one-line summary of your changes, along with any other details + you think we should know. + +4. A sign-off line certifying your `developer certificate of origin + <http://elinux.org/Developer_Certificate_Of_Origin>`_ [#fcert]_. + +.. _libmaple-git-resources: + +Git Resources +------------- + +If you'd like to learn more about Git, we recommend the following +resources: + +* `The Git Community Book <http://book.git-scm.com/index.html>`_: A + collaboratively edited book on Git. + +* `Pro Git <http://progit.org/book/>`_: despite its title, this is a + fairly beginner-friendly source of information. + +* `Git - Revision Control Perfected (Linux Journal) + <http://www.linuxjournal.com/content/git-revision-control-perfected>`_: + Despite a title that makes it sound like it was written by a + marketing department, this is a very good introductory article on + basic Git concepts, and a solid primer on Git's internals. + +- `GitPhraseBook (openembedded.org) + <http://www.openembedded.org/index.php/GitPhraseBook>`_: A + cookbook-style list of common Git problems and their solutions. + +* `Understanding Git Conceptually + <http://www.eecs.harvard.edu/~cduan/technical/git/>`_: a good, + introductory tutorial on Git's fundamental concepts. + +* `Git for Computer Scientists + <http://eagain.net/articles/git-for-computer-scientists/>`_: if + you're comfortable with directed acyclic graphs, this resource + explains Git's functionality in graph-theoretic terms. + +.. highlight:: text + +.. rubric:: Footnotes + +.. [#fcert] Including this line indicates that you certify the following:: + + Developer's Certificate of Origin 1.1 + + By making a contribution to this project, I certify that: + + (a) The contribution was created in whole or in part by me and I + have the right to submit it under the open source license + indicated in the file; or + + (b) The contribution is based upon previous work that, to the best + of my knowledge, is covered under an appropriate open source + license and I have the right under that license to submit that + work with modifications, whether created in whole or in part + by me, under the same open source license (unless I am + permitted to submit under a different license), as indicated + in the file; or + + (c) The contribution was provided directly to me by some other + person who certified (a), (b) or (c) and I have not modified + it. + + (d) I understand and agree that this project and the contribution + are public and that a record of the contribution (including all + personal information I submit with it, including my sign-off) is + maintained indefinitely and may be redistributed consistent with + this project or the open source license(s) involved. + + This may seem arbitrary, but it helps ensure that libmaple + remains open source. diff --git a/docs/source/libmaple/overview.rst b/docs/source/libmaple/overview.rst new file mode 100644 index 0000000..006f1d8 --- /dev/null +++ b/docs/source/libmaple/overview.rst @@ -0,0 +1,516 @@ +.. highlight:: c + +.. _libmaple-overview: + +Overview +======== + +This page is a general overview of :ref:`libmaple proper +<libmaple-vs-wirish>`. It describes libmaple's design, and names +implementation patterns to look for when using it. General +familiarity with the :ref:`STM32 <stm32>` is assumed; beginners should +start with the high-level :ref:`Wirish interface <language>` instead. +Examples are given from libmaple's sources. + +.. contents:: Contents + :local: + +Design Goals +------------ + +The central goal for libmaple proper is to provide a pleasant, +portable, and consistent set of interfaces for dealing with the +various series of STM32 microcontrollers. + +Portability in particular can be a problem when programming for the +STM32. While the various STM32 series are largely pin-compatible with +one another, the peripheral register maps between series often change +drastically, even when the functionality provided by the peripheral +doesn't change very much. This means that code which accesses +registers directly often needs to change when porting a program to a +different series MCU. + +ST's solution to this problem thus far has been to `issue +<http://www.st.com/internet/com/SOFTWARE_RESOURCES/SW_COMPONENT/FIRMWARE/stm32l1_stdperiph_lib.zip>`_ +`separate +<http://www.st.com/internet/com/SOFTWARE_RESOURCES/SW_COMPONENT/FIRMWARE/stm32f10x_stdperiph_lib.zip>`_ +`firmware +<http://www.st.com/internet/com/SOFTWARE_RESOURCES/SW_COMPONENT/FIRMWARE/stm32f2xx_stdperiph_lib.zip>`_ +`libraries +<http://www.st.com/internet/com/SOFTWARE_RESOURCES/SW_COMPONENT/FIRMWARE/stm32f4_dsp_stdperiph_lib.zip>`_; +one for each STM32 series. Along with these, they have released a +`number +<http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/APPLICATION_NOTE/DM00024853.pdf>`_ +of `application +<http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/APPLICATION_NOTE/DM00033267.pdf>`_ +`notes +<http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/APPLICATION_NOTE/DM00032987.pdf>`_ +describing the compatibility issues and how to migrate between series +by switching firmware libraries. Often, the migration advice is +essentially "rewrite your code"; this occurs, for example, with any +code involving GPIO or DMA being migrated between STM32F1 and STM32F2. + +Needless to say, this can be very annoying. (Didn't we solve this +sort of problem years ago?) When you just want your robot to fly, +your `LEDs to blink <http://www.youtube.com/watch?v=J845L45zqfk>`_, or +your `FM synthesizer <https://github.com/Ixox/preen>`_ to, well, +`synthesize <http://xhosxe.free.fr/IxoxFMSynth.mp3>`_, you probably +couldn't care less about dealing with a new set of registers. + +We want to make it easier to write portable STM32 code. To enable +that, libmaple abstracts away many hardware details behind portable +interfaces. We also want to make it easy for you to get your hands +dirty when need or desire arises. To that end, libmaple makes as few +assumptions as possible, and does its best to get out of your way when +you want it to leave. + +.. _libmaple-overview-devices: + +Libmaple's Device Model +----------------------- + +The libmaple device model is simple and stupid. This is a feature. + +*Device types* are the central libmaple abstraction; they exist to +provide portable interfaces to common peripherals, but they still let +you do nonportable things easily if you want to. + +The rules for device types are: + +- Device types are structs representing peripherals. The name of the + device type for peripheral "foo" is ``struct foo_dev`` (so for + foo=ADC, it's ``struct adc_dev``. For foo=DMA, it's ``struct + dma_dev``; etc.). These are always ``typedef``\ ed to ``foo_dev``. + +- Each device type contains any information needed or used by libmaple + for operating on the peripheral the type represents. Device types + are defined alongside declarations for portable support routines in + the header ``<libmaple/foo.h>`` (examples: :ref:`libmaple-adc`, + :ref:`libmaple-dma`). + +- Direct :ref:`register access <libmaple-overview-regmaps>` is + possible via the ``regs`` field in each device type. (Given a + ``foo_dev *foo``, you can read and write the BAR register + ``FOO_BAR`` with ``foo->regs->BAR``.) + +- An :ref:`rcc_clk_id <libmaple-rcc-rcc_clk_id>` for the device is + available in the ``clk_id`` field; this is an opaque type that can + be used to uniquely identifies the peripheral. (Given ``foo_dev + *foo``, you can check which foo you have by looking at + ``foo->clk_id``.) + +- The backend for each supported STM32 series statically initializes + devices as appropriate, and ensures that the peripheral support + header includes declarations for pointers to these statically + allocated devices. + +- Peripheral support functions usually expect a pointer to a device as + their first argument. These functions' implementations may vary + with the particular microcontroller you're targeting, but their + semantics try to stay the same. To migrate to a different target, + you'll often be able to simply recompile your program (and libmaple) + for the new target. + +- When complete portability is not possible, libmaple tries to keep + the nonportable bits in data, rather than code. + +Example: ``adc_dev`` +~~~~~~~~~~~~~~~~~~~~ + +These rules are best explained by example. The device type for ADC +peripherals is ``struct adc_dev``. Its definition is provided by +``<libmaple/adc.h>``:: + + typedef struct adc_dev { + adc_reg_map *regs; + rcc_clk_id clk_id; + } adc_dev; + +An ``adc_dev`` contains a pointer to its register map in the ``regs`` +field. This ``regs`` field is available on all device types. Its value +is a :ref:`register map base pointer +<libmaple-overview-regmaps-base-pts>` (like ``ADC1_BASE``, etc.) for +the peripheral, as determined by the current target. For example, two +equivalent expressions for reading the ADC1 regular data register are +``ADC1_BASE->DR`` and ``ADC1->regs->DR`` (though the first one is +faster). Manipulating registers directly via ``->regs`` is thus +always possible, but can be nonportable, and should you choose to do +this, it's up to you to get it right. + +An ``adc_dev`` also contains an ``rcc_clk_id`` for the ADC peripheral +it represents in the ``clk_id`` field. The ``rcc_clk_id`` enum type +has an enumerator for each peripheral supported by your series. For +example, the ADC peripherals' ``rcc_clk_id`` enumerators are +``RCC_ADC1``, ``RCC_ADC2``, and ``RCC_ADC3``. In general, an +``rcc_clk_id`` is useful not only for managing the clock line to a +peripheral, but also as a unique identifier for that peripheral. + +(Device types can be more complicated than this; ``adc_dev`` was +chosen as a simple example of the minimum you can expect.) + +Rather than have you define your own ``adc_dev``\ s, libmaple defines +them for you as appropriate for your target STM32 series. For example, +on STM32F1, the file libmaple/stm32f1/adc.c contains the following:: + + static adc_dev adc1 = { + .regs = ADC1_BASE, + .clk_id = RCC_ADC1, + }; + /** ADC1 device. */ + const adc_dev *ADC1 = &adc1; + + static adc_dev adc2 = { + .regs = ADC2_BASE, + .clk_id = RCC_ADC2, + }; + /** ADC2 device. */ + const adc_dev *ADC2 = &adc2; + + #if defined(STM32_HIGH_DENSITY) || defined(STM32_XL_DENSITY) + static adc_dev adc3 = { + .regs = ADC3_BASE, + .clk_id = RCC_ADC3, + }; + /** ADC3 device. */ + const adc_dev *ADC3 = &adc3; + #endif + +Since all supported STM32F1 targets support ADC1 and ADC2, libmaple +predefines corresponding ``adc_dev`` instances for you. To save space, +it avoids defining an ``adc_dev`` for ADC3 unless you are targeting a +high- or XL-density STM32F1, as medium- and lower density MCUs don't +have ADC3. + +Note that the structs themselves are static and are exposed only via +pointers. These pointers are declared in a series-specific ADC +header, ``<series/adc.h>`` which is included by ``<libmaple/adc.h>`` +based on the MCU you're targeting. (**Never include <series/foo.h> +directly**. Instead, include ``<libmaple/foo.h>`` and let it take +care of that for you.) On STM32F1, the series ADC header contains the +following:: + + extern const struct adc_dev *ADC1; + extern const struct adc_dev *ADC2; + #if defined(STM32_HIGH_DENSITY) || defined(STM32_XL_DENSITY) + extern const struct adc_dev *ADC3; + #endif + +In general, you access the predefined devices via these pointers. As +illustrated by the ADC example, the variables for these pointers +follow the naming scheme used in ST's reference manuals -- the pointer +to ADC1's ``adc_dev`` is named ``ADC1``, and so on. + +The :ref:`API documentation <libmaple-apis>` for the peripherals +you're interested in will list the available devices on each target. + +Using Devices +~~~~~~~~~~~~~ + +Peripheral support routines usually expect pointers to their device +types as their first arguments. Here are some ADC examples:: + + uint16 adc_read(const adc_dev *dev, uint8 channel); + static inline void adc_enable(const adc_dev *dev); + static inline void adc_disable(const adc_dev *dev); + +So, to read channel 2 of ADC1, you could call ``adc_read(ADC1, 2)``. +To disable ADC2, call ``adc_disable(ADC2)``; etc. + +That's it; there's nothing complicated here. In general, just follow +links from the :ref:`libmaple-apis` page to the header for the +peripheral you're interested in. It will explain the supported +functionality, both portable and series-specific. + +Segregating Non-portable Functionality into Data +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +As mentioned previously, when total portability isn't possible, +libmaple tries to do the right thing and segregate the nonportable +portions into data rather than code. The function +``adc_set_sample_rate()`` is a good example of how this works, and why +it's useful:: + + void adc_set_sample_rate(const adc_dev *dev, adc_smp_rate smp_rate); + +For example, while both STM32F1 and STM32F2 support setting the ADC +sample time via the same register interface, the actual sample times +supported are different. For instance, on STM32F1, available sample +times include 1.5, 7.5, and 13.5 ADC cycles. On STM32F2, none of these +are available, but 3, 15, and 28 ADC cycles are supported (which is +not true for STM32F1). To work with this, libmaple provides a single +function, ``adc_set_sample_rate()``, for setting an ADC controller's +channel sampling time, but the actual sample rates it takes are given +by the ``adc_smp_rate`` type, which is different on STM32F1 and +STM32F2. + +This is the STM32F1 implementation of adc_smp_rate:: + + typedef enum adc_smp_rate { + ADC_SMPR_1_5, /**< 1.5 ADC cycles */ + ADC_SMPR_7_5, /**< 7.5 ADC cycles */ + ADC_SMPR_13_5, /**< 13.5 ADC cycles */ + ADC_SMPR_28_5, /**< 28.5 ADC cycles */ + ADC_SMPR_41_5, /**< 41.5 ADC cycles */ + ADC_SMPR_55_5, /**< 55.5 ADC cycles */ + ADC_SMPR_71_5, /**< 71.5 ADC cycles */ + ADC_SMPR_239_5, /**< 239.5 ADC cycles */ + } adc_smp_rate; + +And here is the STM32F2 implementation:: + + typedef enum adc_smp_rate { + ADC_SMPR_3, /**< 3 ADC cycles */ + ADC_SMPR_15, /**< 15 ADC cycles */ + ADC_SMPR_28, /**< 28 ADC cycles */ + ADC_SMPR_56, /**< 56 ADC cycles */ + ADC_SMPR_84, /**< 84 ADC cycles */ + ADC_SMPR_112, /**< 112 ADC cycles */ + ADC_SMPR_144, /**< 144 ADC cycles */ + ADC_SMPR_480, /**< 480 ADC cycles */ + } adc_smp_rate; + +So, on F1, you could call ``adc_set_sample_rate(ADC1, ADC_SMPR_1_5)``, +and on F2, you could call ``adc_set_sample_rate(ADC1, +ADC_SMPR_3)``. If you're only interested in one of those series, then +that's all you need to know. + +However, if you're targeting multiple series, then this is useful +because it lets you put the actual sample time for the MCU you're +targeting into a variable (or macro, etc.), whose value depends on the +target you're compiling for. This lets you have a single codebase to +test and maintain, and lets you add support for a new target by simply +adding some new data. + +To continue the example, one easy way is to pick an ``adc_smp_rate`` +for each of STM32F1 and STM32F2 is with conditional compilation. Using +the :ref:`STM32_MCU_SERIES <libmaple-stm32-STM32_MCU_SERIES>` define +from :ref:`libmaple-stm32`, you can write:: + + #include <libmaple/adc.h> + #include <libmaple/stm32.h> + + #if STM32_MCU_SERIES == STM32_SERIES_F1 + /* Target is an STM32F1 */ + adc_smp_rate smp_rate = ADC_SMPR_1_5; + #elif STM32_MCU_SERIES == STM32_SERIES_F2 + /* Target is an STM32F2 */ + adc_smp_rate smp_rate = ADC_SMPR_3; + #else + #error "Unsupported STM32 target; can't pick a sample rate" + #endif + + void setup(void) { + adc_set_smp_rate(ADC1, smp_rate); + } + +Adding support for e.g. STM32F4 would only require adding a new +``#elif`` for that series. This is simple, but hackish, and can get +out of control if you're not careful. + +Another way to get the job done is to declare an ``extern adc_smp_rate +smp_rate``, and use the build system to compile a file defining +``smp_rate`` depending on your target. As was discussed earlier, this +is what libmaple does when choosing which files to use for defining +the appropriate ``adc_dev``\ s for your target. How to do this is +outside the scope of this overview, however. + +.. _libmaple-overview-regmaps: + +Register Maps +------------- + +Though we aim to enable libmaple's users to interact with the more +portable :ref:`device interface <libmaple-overview-devices>` as much +as possible, there will always be a need for efficient direct register +access. To allow for that, libmaple provides *register maps* as a +consistent set of names and abstractions for dealing with peripheral +registers and their bits. + +A *register map type* is a struct which names and provides access to a +peripheral's registers (we can use a struct because registers are +usually mapped into contiguous regions of memory). Here's an example +register map for the DAC peripheral on STM32F1 series MCUs (``__io`` +is just libmaple's way of saying ``volatile`` when referring to +register values):: + + typedef struct dac_reg_map { + __io uint32 CR; /**< Control register */ + __io uint32 SWTRIGR; /**< Software trigger register */ + __io uint32 DHR12R1; /**< Channel 1 12-bit right-aligned data + holding register */ + __io uint32 DHR12L1; /**< Channel 1 12-bit left-aligned data + holding register */ + __io uint32 DHR8R1; /**< Channel 1 8-bit left-aligned data + holding register */ + __io uint32 DHR12R2; /**< Channel 2 12-bit right-aligned data + holding register */ + __io uint32 DHR12L2; /**< Channel 2 12-bit left-aligned data + holding register */ + __io uint32 DHR8R2; /**< Channel 2 8-bit left-aligned data + holding register */ + __io uint32 DHR12RD; /**< Dual DAC 12-bit right-aligned data + holding register */ + __io uint32 DHR12LD; /**< Dual DAC 12-bit left-aligned data + holding register */ + __io uint32 DHR8RD; /**< Dual DAC 8-bit right-aligned data holding + register */ + __io uint32 DOR1; /**< Channel 1 data output register */ + __io uint32 DOR2; /**< Channel 2 data output register */ + } dac_reg_map; + +There are two things to notice here. First, if the chip reference +manual (for STM32F1, that's RM0008) names a register ``DAC_FOO``, then +``dac_reg_map`` has a field named ``FOO``. So, the Channel 1 12-bit +right-aligned data register (DAC_DHR12R1) is the ``DHR12R1`` field in +a ``dac_reg_map``. Second, if the reference manual describes a +register as "Foo bar register", the documentation for the +corresponding field has the same description. This consistency makes +it easy to search for a particular register, and, if you see one used +in a source file, to feel sure about what's going on just based on its +name. + +.. _libmaple-overview-regmaps-base-pts: + +So let's say you've included ``<libmaple/foo.h>``, and you want to +mess with some particular register. You'll do this using *register map +base pointers*, which are pointers to ``struct foo_reg_map``. What's +the name of the base pointer you want? That depends on if there's +more than one foo or not. If there's only one foo, then libmaple +guarantees there will be a ``#define`` that looks like like this:: + + #define FOO_BASE ((struct foo_reg_map*)0xDEADBEEF) + +That is, you're guaranteed there will be a pointer to the (only) +``foo_reg_map`` you want, and it will be called +``FOO_BASE``. (``0xDEADBEEF`` is the register map's *base address*, or +the fixed location in memory where the register map begins). Here's +an example for STM32F1:: + + #define DAC_BASE ((struct dac_reg_map*)0x40007400) + +Here are some examples for how to read and write to registers using +register map base pointers. + +* In order to write 2048 to the channel 1 12-bit left-aligned data + holding register (DAC_DHR12L1), you would write:: + + DAC_BASE->DHR12L1 = 2048; + +* In order to read the DAC control register, you would write:: + + uint32 cr = DAC_BASE->CR; + +That covers the case where there's a single foo peripheral. If +there's more than one (say, if there are *n*), then +``<libmaple/foo.h>`` provides the following:: + + #define FOO1_BASE ((struct foo_reg_map*)0xDEADBEEF) + #define FOO2_BASE ((struct foo_reg_map*)0xF00DF00D) + ... + #define FOOn_BASE ((struct foo_reg_map*)0x1EAF1AB5) + +Here are some examples for the ADCs on STM32F1:: + + #define ADC1_BASE ((struct adc_reg_map*)0x40012400) + #define ADC2_BASE ((struct adc_reg_map*)0x40012800) + +In order to read from the ADC1's regular data register (where the +results of ADC conversion are stored), you would write:: + + uint32 converted_result = ADC1_BASE->DR; + +Register Bit Definitions +------------------------ + +In ``<libmaple/foo.h>``, there will also be a variety of ``#define``\ +s for dealing with interesting bits in the xxx registers, called +*register bit definitions*. In keeping with the ST reference manuals, +these are named according to the scheme ``FOO_REG_FIELD``, where +"``REG``" refers to the register, and "``FIELD``" refers to the bit or +bits in ``REG`` that are special. + +Again, this is probably best explained by example. On STM32F1, each +Direct Memory Access (DMA) controller's register map has a certain +number of channel configuration registers (DMA_CCRx). In each of +these channel configuration registers, bit 14 is called the +``MEM2MEM`` bit, and bits 13 and 12 are the priority level (``PL``) +bits. Here are the register bit definitions for those fields on +STM32F1:: + + #define DMA_CCR_MEM2MEM_BIT 14 + #define DMA_CCR_MEM2MEM (1U << DMA_CCR_MEM2MEM_BIT) + #define DMA_CCR_PL (0x3 << 12) + #define DMA_CCR_PL_LOW (0x0 << 12) + #define DMA_CCR_PL_MEDIUM (0x1 << 12) + #define DMA_CCR_PL_HIGH (0x2 << 12) + #define DMA_CCR_PL_VERY_HIGH (0x3 << 12) + +Thus, to check if the ``MEM2MEM`` bit is set in DMA controller 1's +channel configuration register 2 (DMA_CCR2), you can write:: + + if (DMA1_BASE->CCR2 & DMA_CCR_MEM2MEM) { + /* MEM2MEM is set */ + } + +Certain register values occupy multiple bits. For example, the +priority level (PL) of a DMA channel is determined by bits 13 and 12 +of the corresponding channel configuration register. As shown above, +libmaple provides several register bit definitions for masking out the +individual PL bits and determining their meaning. For example, to set +the priority level of a DMA transfer to "high priority", you can +do a read-modify-write sequence on the DMA_CCR_PL bits like so:: + + uint32 ccr = DMA1_BASE->CCR2; + ccr &= ~DMA_CCR_PL; + ccr |= DMA_CCR_PL_HIGH; + DMA1_BASE->CCR2 = ccr; + +Of course, before doing that, you should check to make sure there's +not already a device-level function for performing the same task! (In +this case, there is. It's called :c:func:`dma_set_priority()`; see +:ref:`libmaple-dma`.) For instance, **none of the above code is +portable** to STM32F4, which uses DMA streams instead of channels for +this purpose. + +Peripheral Support Routines +--------------------------- + +This section describes patterns to look for in peripheral support +routines. + +In general, each device needs to be initialized before it can be used. +libmaple provides this initialization routine for each peripheral +``foo``; its name is ``foo_init()``. These initialization routines +turn on the clock to a device, and restore its register values to +their default settings. Here are a few examples:: + + /* From <libmaple/dma.h> */ + void dma_init(dma_dev *dev); + + /* From <libmaple/gpio.h> */ + void gpio_init(gpio_dev *dev); + void gpio_init_all(void); + +Note that, sometimes, there will be an additional initialization +routine for all available peripherals of a certain kind. + +Many peripherals also need additional configuration before they can be +used. These functions are usually called something along the lines of +``foo_enable()``, and often take additional arguments which specify a +particular configuration for the peripheral. Some examples:: + + /* From <libmaple/usart.h> */ + void usart_enable(usart_dev *dev); + + /* From <libmaple/i2c.h> */ + void i2c_master_enable(i2c_dev *dev, uint32 flags); + +After you've initialized, and potentially enabled, your peripheral, it +is now time to begin using it. The :ref:`libmaple API pages +<libmaple-apis>` are your friends here. + +.. rubric:: Footnotes + +.. [#fgpio] As an exception, GPIO ports are given letters instead of + numbers (``GPIOA`` and ``GPIOB`` instead of ``GPIO1`` and + ``GPIO2``, etc.). |