f1/timer.
Added timer_ic_set_polarity to timer_common_f24 with
the enum tim_ic_pol now including trigger on both edges.
Changed timer_slave_set_polarity to use enum tim_et_pol
rather than tim_ic_pol.
In response to suggestion of stinkydiver73 on 24 March that
timers in all families have an option for triggers on both
edges, except F1.
F2 and F4 have a common section to deal with the options register (TIM2 and TIM5 only)
L1 has been made common with timer_common_all as its options register has very different settings to F2/F4. Code is in the L1/timer.c L1/timer.h files
Note that F3 and F05 timers should fit into this scheme, with F3 having additional features.
Bundled with this is L1/pwr.h to change a documentation setting
Also all the Doxyfiles have added "ENABLE_PREPROCESSING = NO" to fix a problem introduced by commit 118.
Add object files to Makefile to include new modules into lib.
Correct typo in pwr.c
Add two new functions to timer.c to preset the counter (for use
with deadman style timeouts) and to identify an interrupt
source.
Also noticed lib/makefile.include didn't clean lib/stm32, which
isn't a target. Added a fix.
file having its own group module rather than using @file.
No code changes except for the following:
gpio: Added function to map the eventout signal plus two Remap functions
dma: Prevent changing base addresses while channel enabled (see datasheet)
pwr: Added pwr.c (new file)
timer: Removed the last function that I introduced recently; there is already
an equivalent function present. Changed some parameter names for consistency.
1. Remove the extra mask (TIM_DIER(timer_peripheral) & flag)
in timer_get_flag. Not all flags in SR relate to IRQs and the flags that
do might be useful even if interrupts not enabled.
2. In a number of functions (e.g. timer_set_output_idle_state) that only
apply to advanced timers, add test for TIM1 and TIM8, as done in some others.
3. Added timer_force_event to manipulate the EG register
TBD DMA burst - can't get my head around why this would be useful.
Someone must have thought so!
