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Fixed mixer scheduler timer overflow

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The max period is now 50ms, so that it overflows the 16bit timer when set to the max period.
Many thanks to @marianomd for finding the issue and the proposed fix!
This commit is contained in:
Raphael Coeffic
2021-11-21 21:53:11 +01:00
committed by Raphael Coeffic
parent ead357c702
commit 916651033c
1 changed files with 3 additions and 3 deletions
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radio/src/targets/common/arm/stm32/mixer_scheduler_driver.cpp
+3 -3
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@@ -32,10 +32,10 @@ void mixerSchedulerStart()
MIXER_SCHEDULER_TIMER->CR1 &= ~TIM_CR1_CEN;
MIXER_SCHEDULER_TIMER->CR1 = TIM_CR1_URS; // do not generate interrupt on soft update
MIXER_SCHEDULER_TIMER->PSC = MIXER_SCHEDULER_TIMER_FREQ / 2000000 - 1; // 0.5uS (2Mhz)
MIXER_SCHEDULER_TIMER->PSC = MIXER_SCHEDULER_TIMER_FREQ / 1000000 - 1; // 1uS (1Mhz)
MIXER_SCHEDULER_TIMER->CCER = 0;
MIXER_SCHEDULER_TIMER->CCMR1 = 0;
MIXER_SCHEDULER_TIMER->ARR = 2 * getMixerSchedulerPeriod() - 1;
MIXER_SCHEDULER_TIMER->ARR = getMixerSchedulerPeriod() - 1;
MIXER_SCHEDULER_TIMER->EGR = TIM_EGR_UG; // reset timer
NVIC_EnableIRQ(MIXER_SCHEDULER_TIMER_IRQn);
@@ -76,7 +76,7 @@ extern "C" void MIXER_SCHEDULER_TIMER_IRQHandler(void)
mixerSchedulerDisableTrigger();
// set next period
MIXER_SCHEDULER_TIMER->ARR = 2 * getMixerSchedulerPeriod() - 1;
MIXER_SCHEDULER_TIMER->ARR = getMixerSchedulerPeriod() - 1;
// trigger mixer start
mixerSchedulerISRTrigger();