Keep DMA initialised on PPM driver

EdgeTX · Sep 3, 2023 · a25526b · a25526b
1 parent 57f7189
commit a25526b
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Showing 2 changed files with 2 additions and 6 deletions.
diff --git a/radio/src/targets/common/arm/stm32/module_timer_driver.cpp b/radio/src/targets/common/arm/stm32/module_timer_driver.cpp
@@ -46,10 +46,8 @@ static void module_timer_send(void* ctx, const etx_timer_config_t* cfg,
                               const void* pulses, uint16_t length)
 {
   auto timer = (const stm32_pulse_timer_t*)ctx;
-  if (!stm32_pulse_if_not_running_disable(timer)) {
-    LL_DMA_DeInit(timer->DMAx, timer->DMA_Stream);
+  if (!stm32_pulse_if_not_running_disable(timer))
     return;
-  }
 
   // Set polarity
   stm32_pulse_set_polarity(timer, cfg->polarity);

diff --git a/radio/src/targets/common/arm/stm32/stm32_pulse_driver.cpp b/radio/src/targets/common/arm/stm32/stm32_pulse_driver.cpp
@@ -65,6 +65,7 @@ static void init_dma_arr_mode(const stm32_pulse_timer_t* tim)
   dmaInit.Channel = tim->DMA_Channel;
   dmaInit.Priority = LL_DMA_PRIORITY_VERYHIGH;
 
+  stm32_dma_enable_clock(tim->DMAx);
   LL_DMA_Init(tim->DMAx, tim->DMA_Stream, &dmaInit);
 }
 
@@ -311,9 +312,6 @@ void stm32_pulse_start_dma_req(const stm32_pulse_timer_t* tim,
   LL_TIM_EnableDMAReq_UPDATE(tim->TIMx);
   LL_DMA_EnableStream(tim->DMAx, tim->DMA_Stream);
 
-  // Trigger update to effect the first DMA transaction
-  // and thus load ARR with the first duration
-
   // start timer
   LL_TIM_EnableCounter(tim->TIMx);
 }