diff options
| -rw-r--r-- | ports/stm32/dac.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/ports/stm32/dac.c b/ports/stm32/dac.c index e44e519b6..7a446854f 100644 --- a/ports/stm32/dac.c +++ b/ports/stm32/dac.c @@ -170,9 +170,19 @@ STATIC void dac_start(uint32_t dac_channel) { STATIC void dac_start_dma(uint32_t dac_channel, const dma_descr_t *dma_descr, uint32_t dma_mode, uint32_t bit_size, uint32_t dac_align, size_t len, void *buf) { uint32_t dma_align; if (bit_size == 8) { + #if defined(STM32G4) + // For STM32G4, DAC registers have to be accessed by words (32-bit). + dma_align = DMA_MDATAALIGN_BYTE | DMA_PDATAALIGN_WORD; + #else dma_align = DMA_MDATAALIGN_BYTE | DMA_PDATAALIGN_BYTE; + #endif } else { + #if defined(STM32G4) + // For STM32G4, DAC registers have to be accessed by words (32-bit). + dma_align = DMA_MDATAALIGN_HALFWORD | DMA_PDATAALIGN_WORD; + #else dma_align = DMA_MDATAALIGN_HALFWORD | DMA_PDATAALIGN_HALFWORD; + #endif } uint32_t base; |