Question
problem with initialisation SDMMC
/* Send ACMD41 SD_APP_OP_COND with Argument 0x80100000 */
while(validvoltage == 0)
{
if(count++ == SDMMC_MAX_VOLT_TRIAL)
{
return HAL_SD_ERROR_INVALID_VOLTRANGE;
}
/* SEND CMD55 APP_CMD with RCA as 0 */
errorstate = SDMMC_CmdAppCommand(hsd->Instance, 0);
if(errorstate != HAL_SD_ERROR_NONE)
{
return HAL_SD_ERROR_UNSUPPORTED_FEATURE;
}
/* Send CMD41 */
errorstate = SDMMC_CmdAppOperCommand(hsd->Instance, SDMMC_STD_CAPACITY);
if(errorstate != HAL_SD_ERROR_NONE)
{
return HAL_SD_ERROR_UNSUPPORTED_FEATURE;
}
/* Get command response */
response = SDMMC_GetResponse(hsd->Instance, SDMMC_RESP1);
/* Get operating voltage*/
validvoltage = (((response >> 31) == 1) ? 1 : 0);
}
I tested with a debugger that where fail the program. Inside of the SD_PowerON function exist a while loop. When the cards don't recognize this while loop run infinitelly and never go out from there.
