diff options
| -rw-r--r-- | ports/stm32/dac.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/ports/stm32/dac.c b/ports/stm32/dac.c index 040892553..8022fd274 100644 --- a/ports/stm32/dac.c +++ b/ports/stm32/dac.c @@ -485,6 +485,9 @@ mp_obj_t pyb_dac_write_timed(size_t n_args, const mp_obj_t *pos_args, mp_map_t * #endif } + // To prevent invalid dac output, clean D-cache before starting dma. + MP_HAL_CLEAN_DCACHE(bufinfo.buf, bufinfo.len); + uint32_t align; if (self->bits == 8) { align = DAC_ALIGN_8B_R; |