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Allow <board/board.h> to override the PLL multiplier by defining
BOARD_RCC_PLLMUL. This should be useful for e.g. value line MCUs,
which have slower clocks. It's also probably useful for people who
have external oscillators different from the 8 MHz ones we use on all
of our boards.
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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FIXME:
- F1 support currently appears to be failing in start_c.c, for some
unknown reason. This will need to get sorted out later.
Add a new wirish namespace, and a sub-namespace wirish::priv::. Put a
bunch of board setup routines in this namespace, and declare them in
new wirish/boards_private.h. boards.cpp uses this to perform
initialization tasks in a portable way, with two new boards_setup.cpp
files under wirish/stm32f1 and wirish/stm32f2 handling the
series-specific details.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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