It is the problem about the dma driver of stm32L452's sdmmc1.
ide: cubeide
board: NUCLEO-L452RE
config: sdmmc1 with dma , sd 4bit, without rtos
sdmmc1 dma config :
1. {sdmmc1 both(rx and tx) : dma2_channel_4}
or 2. {(sdmmc1_rx : dma2_channel_4) and (sdmmc1_tx : dma2_channel_5) }
I have followed the guide in stm32l4xx_hal_sd.c :
(##) On other devices, perform DMA configuration if you need to use DMA process (HAL_SD_ReadBlocks_DMA()
and HAL_SD_WriteBlocks_DMA() APIs).
(+++) Enable the DMAx interface clock using __HAL_RCC_DMAx_CLK_ENABLE();
(+++) Configure the DMA using the function HAL_DMA_Init() with predeclared and filled.
The problem is that only "HAL_SD_ReadBlocks_DMA()" can get the response from "HAL_SD_RxCpltCallback()".
calling "HAL_SD_WriteBlocks_DMA()" returned "ok" , but without the response of "HAL_SD_TxCpltCallback()".
And when i change the sdmmc1 dma channel:
sdmmc1_rx: dma2_channel_5
sdmmc1_tx: dma2_channel_4
"HAL_SD_ReadBlocks_DMA" can not get the callback response from "HAL_SD_RxCpltCallback()".
but
"HAL_SD_WriteBlocks_DMA()" get the response from "HAL_SD_TxCpltCallback()".
With the same configuration in stm32F407, everything goes well
Looking forward to help!
thanks
