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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>
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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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Make a new family header, libmaple/stm32f1/include/family/gpio.h, and
supporting libmaple/stm32f1/gpio.c.
Beyond registers and devices, these also include anything mentioning
AFIO, which doesn't exist on F2.
Update libmaple/stm32f1/rules.mk for new gpio.c.
Alter gpio_write_bit() to use dev->regs->BSRR only. BRRs are not
present on STM32F2.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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