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fix(soft-serial): Timer toggle mode would skip first period (#4432)

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This commit is contained in:
Raphael Coeffic
2023-12-19 09:39:38 +10:00
committed by GitHub
parent 87e71d0a33
commit 26b0581247
1 changed files with 11 additions and 5 deletions
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radio/src/targets/common/arm/stm32/stm32_pulse_driver.cpp
+11 -5
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@@ -302,12 +302,18 @@ void stm32_pulse_start_dma_req(const stm32_pulse_timer_t* tim,
// Enable TC IRQ
LL_DMA_EnableIT_TC(tim->DMAx, tim->DMA_Stream);
// Reset counter
LL_TIM_SetCounter(tim->TIMx, 0x00);
// only on PWM (preloads the first period)
if (ocmode == LL_TIM_OCMODE_PWM1)
if (ocmode == LL_TIM_OCMODE_PWM1) {
// preloads first period for PWM)
LL_TIM_SetCounter(tim->TIMx, 0x00);
LL_TIM_GenerateEvent_UPDATE(tim->TIMx);
} else {
// Reset counter close to overflow
if (IS_TIM_32B_COUNTER_INSTANCE(tim->TIMx)) {
LL_TIM_SetCounter(tim->TIMx, 0xFFFFFFFF);
} else {
LL_TIM_SetCounter(tim->TIMx, 0xFFFF);
}
}
LL_TIM_EnableDMAReq_UPDATE(tim->TIMx);
LL_DMA_EnableStream(tim->DMAx, tim->DMA_Stream);