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* Implement DMA tube API on STM32F1.Marti Bolivar2012-06-152-4/+60
| | | | Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* DMA: prep for F2 with new "tube" API.Marti Bolivar2012-06-156-366/+1038
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To prepare for STM32F2/F4 DMA support, introduce a new libmaple DMA API, and move some code around to make priority level and interrupt handling more generic. The new API is based on a new set of types (dma_tube, struct dma_tube_reg_map, enum dma_request_src, enum dma_cfg_flags, and struct dma_tube_config). The central abstraction is the dma_tube type. STM32F2/F4 use DMA streams to control dataflow, and STM32F1 uses channels. dma_tube stands for whichever is appropriate for the current target. Dealing with tubes allows for configuring and using DMA with opaque tube values in the same source, instead of (as with ST's firmware) requiring two separate codebases. The new API is also more user-friendly, as it doesn't require knowing which DMA address registers to set and which configuration register flags go along with them. It now suffices to specify the source and destination for the DMA transfer, along with their sizes. This avoids confusion (e.g. for memory-to-memory transfers, data flows from the peripheral address register to the memory register, which might be surprising on F2, which has two memory address registers). The old API (based on enum dma_mode_flags and dma_setup_transfer()) is still available on F1, but deprecate it. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* Add stm32_private.h.Marti Bolivar2012-06-121-0/+45
| | | | | | | | | This will hold STM32-related things that I'm not sure are well-thought out enough to go into <libmaple/stm32.h>. Currently, it contains an accessor routine that tells you the purpose of the memory block containing an address. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* Build libmaple/dma.c on STM32F1.Marti Bolivar2012-06-121-1/+3
| | | | | | F2 doesn't work yet. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* enum spi_mode: Add more descriptive enumerators, documentation.Marti Bolivar2012-06-071-11/+16
| | | | | | | | | Instead of requiring everyone to figure it out for themselves, add enumerators specifying the idle logic level and what clock edge triggers data capture. Yes, it's easy enough to figure it out. It's also convenient to have these. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* Bring back <libmaple/spi.h>.Marti Bolivar2012-06-078-25/+221
| | | | | | | | | | | Add a spi_private.h with a SPI_DEV(), for convenience. Use it in the F1 and F2 implementations. We could probably unify these with an STM32_HAVE_SPI(n) macro, but we'll leave that for the future. Most everything from F1 is portable; F2 has some additional bit definitions and a spi_get_af() routine, but that's about it. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* Move syscalls.c into Wirish.Marti Bolivar2012-06-072-170/+0
| | | | | | libmaple takes orders, it doesn't give them. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* libmaple/timer.h: Capitalization fixMarti Bolivar2012-06-071-2/+2
| | | | Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* libmaple/timer.h: Lose BIT().Marti Bolivar2012-06-071-90/+90
| | | | Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* libmaple/timer.h: Move deprecated bits to bottom.Marti Bolivar2012-06-071-66/+67
| | | | Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* struct timer_dev: Don't touch ->handlers!Marti Bolivar2012-06-071-3/+1
| | | | Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* libmaple/timer.h: Nuke useless comment.Marti Bolivar2012-06-071-1/+1
| | | | Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* libmaple/timer.h: Doxygen beautification and fixupsMarti Bolivar2012-06-071-98/+109
| | | | | | | Make the Doxygen comments nicer to look at. Some of the docstrings are out-of-date since F2 support was added, so update them. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* Move timer_dev definitions into libmaple/timer.c.Marti Bolivar2012-06-074-192/+184
| | | | | | | | | The addition of STM32_HAVE_TIMER() allows us to avoid some repetition. There's still an issue with names on F1 preventing us from moving the IRQ handlers to libmaple/timer.c, but once that's resolved, we'll be able to remove even more. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* Tweak some timer_private APIs.Marti Bolivar2012-06-073-41/+36
| | | | | | | The current versions of DELARE_*_TIMER() don't play well with cscope, which is a bad sign. Fix that. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* series/timer.h: Remove silly duplicate declarations.Marti Bolivar2012-06-072-2/+0
| | | | Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* stm32.h: Soften "missing MCU" errors into warnings.Marti Bolivar2012-06-072-3/+2
| | | | | | | | | | | | | | It's not important whether the MCU is specified. What's important is that <libmaple/stm32.h> gets everything it needs -- which it now ensures that it does. Requiring people to do things on a per-MCU basis hurts hackability and is just asking for trouble. On the other hand, it's nice to provide a clue as to why <libmaple/stm32.h> might be giving #errors, so do leave the warnings. People can always hack the header to shut them up if they want. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* Bring back libmaple/dac.h.Marti Bolivar2012-06-045-82/+228
| | | | | | | Minor variations on F2: DMA underrun interrupts, and a status register to hold the notification bits. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* stm32.h: Add STM32_HAVE_DAC feature-test.Marti Bolivar2012-06-043-0/+12
| | | | Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* STM32F1: gpio.h: Add hack mode macro, for F2 compatibility.Marti Bolivar2012-06-041-0/+3
| | | | | | | | I'm sure we can work the compatible subset of F1/F2 GPIO functionality into the F1 gpio.h interface in a clean way. This is not that clean way, but I'm short on time. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* STM32F2: Add EXTI support.Marti Bolivar2012-06-036-8/+127
| | | | | | | | Add series headers to keep the base pointers, and (on F2) use SYSCFG to tell exti_do_select() where the EXTI control registers are. No surprises. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* STM32F2: Add SYSCFG support.Marti Bolivar2012-06-033-0/+230
| | | | | | Turn it on at init() time on F2. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* STM32F1: gpio.h: Cosmetics.Marti Bolivar2012-06-031-100/+85
| | | | | | | Those ugly Doxygen comments have been bothering me since forever. Fix them up and throw some M-x align around. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* Bring back EXTI on F1, with deprecations for gpio.h on F1.Marti Bolivar2012-06-0311-188/+372
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Tested on Maple Mini with examples/mini-exti-test. Changes to Wirish are minor: use the new EXTI types exti_num and exti_cfg (see below) in place of now-deprecated variants in ext_interrupts.cpp. The way I originally did libmaple/exti.h was stupid, and fixing it turned out to be a little disruptive. libmaple/exti.h depends on libmaple/gpio.h (for AFIO), but that's a classic case of exposed implementation detail. So invert the dependency: make gpio.h depend on exti.h. Do this by adding exti_num and exti_cfg to exti.h; these respectively replace afio_exti_num and afio_exti_port. The afio_* variants are now deprecated. (Throw in a typedef and some macros at the bottom of the F1 series/gpio.h for backwards compatibility). Make exti_attach_interrupt() and exti_detach_interrupt() take exti_num/exti_cfg arguments instead of the afio_* variants. Make the EXTI dispatch routines __always_inline to defeat GCC -Os. Many renames throughout libmaple/stm32f1/ to stop using the deprecated names. Also move the previously F1-only gpio_exti_port() function into the public libmaple header. Reimplementing it in terms of rcc_clk_ids lets us deprecate the gpio_dev->exti_port field, which will save space in the future. While we're there, I notice that struct gpio_dev is defined once per series. That's dumb, as it misses the entire point of having device structs: they contain what's portable. So put the F1 version (which has the extra EXTI port field) into libmaple/gpio.h, and add the necessary exti_ports to libmaple/stm32f2/gpio.c. Sigh. We'll get rid of it eventually, at least. Clean up some other mistakes in gpio.h files as well (mostly removing util.h dependency). Sorry for the messy commit. For portability, add a new series-specific exti function, exti_select(). The F1 version in (new) libmaple/stm32f1/exti.c uses AFIO and some new private functionality in libmaple/exti.c and (new) libmaple/exti_private.h to make this convenient. We'll be able to do the SYSCFG equivalent on F2 without any trouble. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* <libmaple/bitband.h>: DoxygenMarti Bolivar2012-06-031-2/+2
| | | | Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* libmaple/dac.c: Copyright.Marti Bolivar2012-06-031-0/+1
| | | | Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* libmaple/dac.c: Generalize comment about PA4/PA5.Marti Bolivar2012-06-031-2/+2
| | | | | | Seems like this is true on F2 as well! Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* Add ISRs and vector table for F1 value line.Marti Bolivar2012-06-035-4/+393
| | | | | | | | | | | | | | | | | Now libmaple/stm32f1/rules.mk tries to pull in ISRs and a vector table on a per-line basis. Move isrs_performance.S and vector_table_performance.S to (new) libmaple/stm32f1/performance, and rename them. Add corresponding files for value line under (new) libmaple/stm32f1/value. This helps clean up some performance-line-isms, and allows implementing e.g. the CEC interrupt, which is used by something else on performance line. Untested (I don't have access to a value line MCU); hopefully this works. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* Slightly improve and generify the USB infrastructure.Marti Bolivar2012-06-039-49/+49
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The good news is that <libmaple/usb.h> and <libmaple/usb_cdcacm.h> did turn out generic enough in what they specify to go on unchanged. However, we can't just go on assuming that there's USB just because we're on an F1. Now that there's value line in the tree, we need to be more careful (value line F1s don't have USB peripherals). To that end, make all the F1 board-includes/*.mk files specify what line their MCU is with an MCU_F1_LINE variable. Use that to hack libmaple/usb/rules.mk so we only try to build the USB module under appropriate circumstances. While we're at it, add a vector_symbols.inc for value line MCUs under support/ld/. We need this to get the target-config.mk modifications implied by the addition of MCU_F1_LINE. We'll fix up some other performance-line-isms under libmaple/stm32f1 in a separate commit. Also in libmaple/usb/: - Move everything into a new stm32f1 directory. Due to aforementioned rules.mk hacks, there is no immediate need for an stm32f2 directory (USB support doesn't exist there). - Update the README for style and content. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* libmaple_types.h: Add __unused.Marti Bolivar2012-06-031-0/+1
| | | | | | We'll need this soon. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* F2: Add usart_get_af().Marti Bolivar2012-06-032-17/+30
| | | | Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* Globally switch style for GPIO config routines.Marti Bolivar2012-06-039-30/+77
| | | | | | | | | | | | | | | | | | | | Stupidly, spi_gpio_cfg() didn't take a spi_dev* argument on F1, because it doesn't matter there. On F2, where we need to set an alternate function when configuring GPIOs for SPI, we need to know the dev. We can't add break backwards compatibility, so we need a new function. However, we've since added a bunch of foo_gpio_cfg() routines, and we don't want confusing asymmetry in the names. So a global style change is needed. (Fortunately, the new functions weren't part of a release, so it's no problem to change their names). Change all foo_gpio_cfg() routines to foo_config_gpios() (or foo_config_gpio(), if there's only one GPIO to configure). For backwards compatibility, make spi_gpio_cfg() on F1 an __always_inline call to spi_config_gpios(). Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* STM32F2: Add timer_get_af().Marti Bolivar2012-06-032-0/+52
| | | | | | | | Pull some code out of the F2 pinMode() into a utility function. This feels generally useful enough to be exposed to the users (it will, for example, make it easier to implement input capture in a clean way). Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* Add timer_has_cc_channel().Marti Bolivar2012-06-022-0/+29
| | | | | | | | | This is a convenience function for deciding whether a timer supports a particular capture/compare channel. It's necessary because of those nuisance "general purpose" timers that only have a subset of the channels. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* Sort the rcc_clk_id enumerators semi-alphabetically.Marti Bolivar2012-06-022-77/+77
| | | | | | | | | | | | | | | | Only semi-alphabetically because peripherals are kept together (so the UARTs sort as if they were USARTs). Advantages: - It lets us play numeric comparison and lookup-table hacks, as we now have the property that the rcc_clk_ids for a given peripheral are a contiguous range of integers. - It will hopefully let the compiler emit faster/smaller code for switches over a dev->clk_id. - It's better intuitively. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* Oops; don't break the build on F1.Marti Bolivar2012-06-021-1/+0
| | | | | | That was dumb. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* libmaple/adc.h: Fixup for Doxygen.Marti Bolivar2012-06-011-1/+1
| | | | Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* libmaple/stm32.h: Add STM32_TIMER_MASK, STM32_HAVE_TIMER.Marti Bolivar2012-06-013-4/+48
| | | | | | | | | | | | | | | | | | Feature-test macros for dealing with the fact that timer support has holes. STM32_TIMER_MASK is a bitmask where bit n is set when TIMERn is present. STM32_HAVE_TIMER(n) just tests whether bit n is set in STM32_TIMER_MASK. This is necessary because e.g. the STM32F100RB has timers 1-4, 6, 7, and 15-17. Because of this, the usual STM32_NR_whatever won't work, and we use a bitmask instead. For F1 performance line (F103s), STM32_TIMER_MASK can be derived from the density. For F1 value line, I'm not as sure, so just add it for the single MCU we support (the STM32F100RB). Same story for F2: add it for the STM32F207IC. We can fix this up later if necessary. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* stm32f2/usart.c: Change some FIXMEs to TODOs.Marti Bolivar2012-06-011-6/+7
| | | | | | I think these are probably unchanged, but we need to make sure. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* Bring back HardwareSerial.Marti Bolivar2012-06-011-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | To make this happen, we need to have <board/board.h> tell us whether or not it's got each of the USARTs. Do that with BOARD_HAVE_USARTn, for n = 1,...,6. This lets us define HardwareSerial instances only when appropriate, and gets rid of some board-specific hacks we'd accumulated. The new <libmaple/usart.h> now has a convenience function for determining the bus rate by using the appropriate STM32_PCLKx macro, so we can shave a uint32 per instance, which is nice given that they're all going to be in memory. This changes the constructor arguments, but the API only specifies the semantics of the predefined instances, so this is still backwards-compatible. (We should look into storing the instances in Flash -- they don't change, after all.) We don't actually need struct usart_dev's definition in HardwareSerial.h, so replace it with a forward declaration and include <libmaple/usart.h> it in HardwareSerial.cpp instead. Assert some copyrights. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* stm32f2/gpio.c: Fix some bugs.Marti Bolivar2012-05-311-3/+3
| | | | | | | Make gpioh.regs actually point to GPIOH_BASE. Properly AND out flag bits in gpio_set_modef(). Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* <libmaple/gpio.h>: Fix gpio_write_bit().Marti Bolivar2012-05-311-1/+1
| | | | | | | It's exactly wrong -- val=0 makes the pin high, and val=1 makes it low. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* libmaple/usart_private.c: Add missing include.Marti Bolivar2012-05-311-0/+1
| | | | Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* STM32F1: Fix nvic_irq_disable_all() on some MCUs.Marti Bolivar2012-05-311-8/+6
| | | | | | | | | | The current implementation only disables the first 64 IRQ lines. This covers all the chips we currently support, but it'll be a nasty surprise if anyone decides to add e.g. connectivity line MCUs (which have more IRQs) in the future. We already have the infrastructure to fix it in a clean way, so we might as well do it now. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* nvic.h: Doxygen: nvic_irq_num is target dependent.Marti Bolivar2012-05-312-2/+2
| | | | Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* libmaple/nvic.h: Doxygen tweak.sMarti Bolivar2012-05-311-6/+18
| | | | Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* libmaple/nvic.h: Fix typo.Marti Bolivar2012-05-311-1/+1
| | | | Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* stm32f1/rcc.c: Move Doyxgen.Marti Bolivar2012-05-311-10/+1
| | | | | | This is a workaround for Breathe. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* series/rcc.h: Lose BIT().Marti Bolivar2012-05-312-360/+370
| | | | Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* libmaple/rcc.c: Fix typo.Marti Bolivar2012-05-311-1/+1
| | | | Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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