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Made safer reset of timer #12442

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Made safer reset of timer #12442

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2104d86
Made safer reset of timer
roangel Jul 9, 2019
3d847a4
Fix warnings
roangel Jul 9, 2019
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5 changes: 4 additions & 1 deletion src/drivers/stm32/drv_io_timer.c
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Original file line number Diff line number Diff line change
Expand Up @@ -131,6 +131,9 @@
#else
#define CCER_C1_INIT GTIM_CCER_CC1E
#endif

#define CNT_VALUE_SAFE_TO_WRITE ((unsigned int)3000 * 1000000/BOARD_ONESHOT_FREQ)

// NotUsed PWMOut PWMIn Capture OneShot Trigger
io_timer_channel_allocation_t channel_allocations[IOTimerChanModeSize] = { UINT8_MAX, 0, 0, 0, 0, 0 };

Expand Down Expand Up @@ -505,7 +508,7 @@ void io_timer_trigger(void)
if (validate_timer_index(timer) == 0) {
int channels = get_timer_channels(timer);

if (oneshots & channels) {
if (oneshots & channels & (rCNT(timer) > CNT_VALUE_SAFE_TO_WRITE)) {
action_cache[actions++] = io_timers[timer].base;
}
}
Expand Down