Solved
SDMMC3 is not working on STM32MP157F-EV1 board.
Hi, Community,
SDMMC3 is not working on STM32MP157F-EV1 board.
I'm not sure what's wrong.
I can confirm that SDMMC3_CK/CMD/D0 signals are input and output by osilloscope,
but SDMMC_FIFO is empty.
The following code is part of the SD_SendSDStatus function in stm32mp1xx_hal_sd.c
static uint32_t SD_SendSDStatus(SD_HandleTypeDef *hsd, uint32_t *pSDstatus)
{
:
:
:
/* Send ACMD13 (SD_APP_STAUS) with argument as card's RCA */
errorstate = SDMMC_CmdStatusRegister(hsd->Instance);
if(errorstate != HAL_SD_ERROR_NONE)
{
hsd->ErrorCode |= HAL_SD_ERROR_NONE;
return errorstate;
}
/* Get status data */
while(!__HAL_SD_GET_FLAG(hsd, SDMMC_FLAG_RXOVERR | SDMMC_FLAG_DCRCFAIL | SDMMC_FLAG_DTIMEOUT | SDMMC_FLAG_DATAEND))
{
if(__HAL_SD_GET_FLAG(hsd, SDMMC_FLAG_RXFIFOHF))
{
for(count = 0U; count < 8U; count++)
{
*pData = SDMMC_ReadFIFO(hsd->Instance); ★★★NOT REACHABLE!!!★★★
pData++;
}
}
if((HAL_GetTick() - tickstart) >= SDMMC_DATATIMEOUT)
{
return HAL_SD_ERROR_TIMEOUT;
}
}
:
:
:
return HAL_SD_ERROR_NONE;
}
These are the SDMMC terminals used.
- PF0 :SDMMC3_D0 (modified)
- PF1 :SDMMC3_CMD (default)
- PG15:SDMMC3_CK (default)
[note]
STM32CubeMX auto generated
- PD1 :SDMMC3_D0
- PF1 :SDMMC3_CMD
- PG15:SDMMC3_CK
Regards,