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Document FLASH_BASE once. This is due to restrictions in the
documentation build system.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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This will let help us verify that we got the right thing when we pull
it out of of Doxygen XML for the official HTML documentation.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Fix @file in many places. Also fix up the descriptions where it's
appropriate. This standardizes the @file formatting across the library
to explicitly include any parent directories up to the repository
root.
Besides being nice, this will hopefully let us manage Doxygen's XML
output so as to make extracting series-specific pieces via Breathe in
the leaflabs-docs repo possible.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Add STM32_HAVE_USB feature test macro requirement for
<series/stm32.h>. This will let us test if we've got a USB peripheral.
wirish/stm32f1/boards_setup.cpp is set up to use this when turning on
USB CDC ACM support at init() time.
Rework the STM32F1 <series/stm32.h> to make it easier to support the
various lines that subdivide that series. We don't really support
anything besides performance line yet, but there's been enough
enthusiasm for value and connectivity line support in the past that
these hooks seem worth adding. This means adding an STM32_F1_LINE
macro and STM32_F1_LINE_[PERFORMANCE,VALUE,ACCESS,CONNECTIVITY] macros
for values that STM32_F1_LINE can take, and generalizing the rest of
the file to begin taking this into account. Some TODOs remain, but
filling these in is the responsibility of future libmaple porting
efforts.
One pleasant consequence of the F1 stm32.h rework is that the build
system no longer has to tell us what density of F103 we're building
for, so remove that from the relevant support/make/board-includes/
files.
Add some tweaks to <libmaple/stm32.h> and the STM32F2 stm32.h header
to make sure this went through properly, and continues to go through
properly in the future.
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Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Standard series peripheral support patch, containing STM32F2 series
timer.h and timer.c.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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This is necessary to make some timer code portable, but I'm not sure
it's a good idea.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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This lets Doxygen pick it up.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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The timer enumerators are different tokens on F2 than they are on F1.
This is wrong (breaks portability), so fix it, and update the F2
rcc_dev_info table to match.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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This function has been with us from the earliest days of libmaple.
It's showing its age, as the API it presents is tied to the
STM32F1. Deprecate it, and provide instructions for how to use newer,
more portable APIs. The new way is more verbose, but we can always add
a portable "just set up the PLL, dammit" convenience function later (a
nice candidate is to extract an interface from setup_clocks() in
boards.cpp).
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Standard refactoring: add series headers for F1 and F2, along with
series adc.c files. There are some issues relating to adc_extsel_event
to hammer out later, but this will do for now.
We also add some new portability interfaces to libmaple/adc.h in order
for Wirish to use the same code to initialize the ADCs at init() time.
As usual, F1 is untested.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Just add the missing register bit definitions in new series headers.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Alphabetize targets and remove continuation lines.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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fsmc_sram_init_gpios() is now series-specific, so move its existing
implementation to the F1 backend, and add libmaple/stm32f2/fsmc.c for
the F2 backend.
Delete libmaple/fsmc.c; it is now empty.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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This is a feature test macro for the flexible static memory
controller (FSMC) peripheral.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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FIXME:
- Test F1 support
- Solve problem of duplicated bytes being TXed unless delay is
inserted after configuration but before first bytes are TXed.
Rip out nonportable bits from top-level interfaces. The USART register
maps are basically the same between F1 and F2, so leave these, but add
register bit definitions which had name changes to the libmaple header
to avoid needless repetition. There are also a few new bits in the F2
USART registers; add definitions for these in the F2 USART header. Add
Doxygen comments for all USART bit definitions.
Deprecate struct usart_dev's max_baud field. This is just bloat that
doesn't bring us much real benefit.
Add new series-specific USART files for F1 and F2:
- libmaple/stm32f[1,2]/usart.c
- libmaple/stm32f[1,2]/include/series/usart.h
These are standard series-specific files, providing register map base
pointers, defining devices, implementing nonportable routines, etc.
We need a portable way to configure the USART GPIOs. To this end, add
usart_async_gpio_cfg() to the top-level USART interface. This function
is implemented in new F1 and F2 USART backends to take the appropriate
action to configure the RX and TX pins for asynchronous full duplex
mode.
USART baud rate calculation is done differently on the different
series. Keep the usart_set_baud_rate() declaration in the top-level
USART header, but move the implementations into the series-specific
usart.c files.
In usart_set_baud_rate(), allow for deriving clock_speed automatically
by letting user tell us to figure out the peripheral clock speed by
mapping the device's rcc_clk_id onto an STM32_PCLK[1,2] value. This
preserves flexibility for users with non-default clock configurations,
but makes things easier on everyone else.
Add private USART files for portable private USART routines:
- libmaple/usart_private.h
- libmaple/usart_private.c
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Add GPIO_AFRL and GPIO_AFRH bit definitions; these seem to have been
overlooked. Add enum gpio_af to give labels to the various
functions. Add gpio_set_af() convenience routine for configuring a
GPIO's alternate function.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Fix include guard name. Remove unused STM32_FLASH_WAIT_STATES (which
was superseded by FLASH_SAFE_WAIT_STATES).
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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The new style for configuring the PLL is to initialize
a (series-specific) struct rcc_pll_cfg, and pass a pointer to it to
rcc_configure_pll(). After that's done, you can use
rcc_turn_on_clk(RCC_CLK_PLL) to turn on the main PLL, and busy-wait
until rcc_is_clk_ready(RCC_CLK_PLL) is true to make sure the new
configuration took effect.
- libmaple/rcc.h:
-- Add struct rcc_pll_cfg, which specifies a PLL configuration. This
specifies a PLL source and a void pointer to series-specific PLL
configuration data.
-- Add rcc_configure_pll(), which takes a pointer to struct
rcc_pll_cfg, and configures the main PLL. It's up to each series
to define this function.
- stm32f1/rcc.h: Add struct stm32f1_rcc_pll_data, to store F1-specific
PLL configuration state.
- stm32f1/rcc.c: Add an implementation for rcc_configure_pll().
- stm32f2/rcc.h: Add struct stm32f2_rcc_pll_data, to store F2-specific
PLL configuration data.
- stm32f2/rcc.c: Add an implementation for rcc_configure_pll().
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Additions:
- rcc_switch_sysclk():
For changing the clock used as SYSCLK's source.
- enum rcc_clk:
One for each system and secondary clock source (e.g. HSE,
LSE). These are defined on a per-series basis in each of the
<series/rcc.h>.
- rcc_turn_on_clk(),
rcc_turn_off_clk(),
rcc_is_clk_ready():
For turning on system and secondary clock sources, and checking
whether or not they're ready. Uses enum rcc_clk.
Removals:
- rcc_clk_init(): There's no way to port this to F2. Move it to the F1
header. This also means we can remove the empty implementation and
enum rcc_pll_multiplier from the F2 RCC header, where it doesn't
make any sense.
Also fix up some includes, and rewrite rcc_clk_init() in terms of the
new clock source management functions.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Make a single function, flash_enable_features(), to control the access
characteristics of Flash memory (i.e. to write to the non-latency bits
of ACR).
In so doing, make everybody pretend to allow instruction and data
caching. On STM32F1, trying to turn these on simply has no
effect. This allows unconditionally trying to turn them on, which will
simplify users' lives.
This has the ancillary benefit of making the stm32f2- and
stm32f1-specific flash.c files unnecessary; delete these.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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This still has some FIXMEs, but it's enough to get going.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Largely untested.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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