diff options
| -rw-r--r-- | ports/stm32/dma.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/ports/stm32/dma.c b/ports/stm32/dma.c index 7ea2eaa3b..35cfba162 100644 --- a/ports/stm32/dma.c +++ b/ports/stm32/dma.c @@ -498,6 +498,14 @@ void dma_init(DMA_HandleTypeDef *dma, const dma_descr_t *dma_descr, void *data){ dma_enable_clock(dma_id); + #if defined(STM32L4) + // Always reset and configure the L4 DMA peripheral + // (dma->State is set to HAL_DMA_STATE_RESET by memset above) + // TODO: understand how L4 DMA works so this is not needed + HAL_DMA_DeInit(dma); + HAL_DMA_Init(dma); + HAL_NVIC_SetPriority(dma_irqn[dma_id], IRQ_PRI_DMA, IRQ_SUBPRI_DMA); + #else // if this stream was previously configured for this channel/request then we // can skip most of the initialisation uint8_t sub_inst = DMA_SUB_INSTANCE_AS_UINT8(dma_descr->sub_instance); @@ -518,6 +526,7 @@ void dma_init(DMA_HandleTypeDef *dma, const dma_descr_t *dma_descr, void *data){ DMA_CalcBaseAndBitshift(dma); #endif } + #endif HAL_NVIC_EnableIRQ(dma_irqn[dma_id]); } |