fix: ensure ws2812 DMA transfer is completed before disabling channel (#6961)

2026-01-08 12:50:23 +10:00
parent 4f90a5e426
commit e1b16311d0
1 changed files with 6 additions and 0 deletions
@@ -139,6 +139,12 @@ static void _update_dma_buffer(const stm32_pulse_timer_t* tim, uint8_t tc)
    LL_DMA_DisableIT_TC(tim->DMAx, tim->DMA_Stream);
    LL_DMA_DisableIT_HT(tim->DMAx, tim->DMA_Stream);
    LL_DMA_DisableStream(tim->DMAx, tim->DMA_Stream);
+
+    uint32_t timeout = 1000;
+    while (LL_DMA_IsEnabledStream(tim->DMAx, tim->DMA_Stream) && timeout--) 	{
+      __NOP();  // Wait
+    }
+
    LL_TIM_CC_DisableChannel(tim->TIMx, tim->TIM_Channel);
  }
  WS2812_DBG_LOW;