Yes, I use Cube.
In the documentation I read that eMMC is connected to SDMMC1.
SDMMC1 can be configured either as SD or MMC. I get the SD option in FATFS only when SDMMC1 is configured as SD.
OK, I found the example to use MMC driver, I configured it.
Anyway - it doesn't work. I get SDMMC_ERROR_CMD_RSP_TIMEOUT.
Here's my SDMMC1 initialization:
static void MX_SDMMC1_MMC_Init(void)
{
/* USER CODE BEGIN SDMMC1_Init 0 */
/* USER CODE END SDMMC1_Init 0 */
/* USER CODE BEGIN SDMMC1_Init 1 */
/* USER CODE END SDMMC1_Init 1 */
hmmc1.Instance = SDMMC1;
hmmc1.Init.ClockEdge = SDMMC_CLOCK_EDGE_RISING;
hmmc1.Init.ClockPowerSave = SDMMC_CLOCK_POWER_SAVE_DISABLE;
hmmc1.Init.BusWide = SDMMC_BUS_WIDE_8B;
hmmc1.Init.HardwareFlowControl = SDMMC_HARDWARE_FLOW_CONTROL_DISABLE;
hmmc1.Init.ClockDiv = 2;
if (HAL_MMC_Init(&hmmc1) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN SDMMC1_Init 2 */
/* USER CODE END SDMMC1_Init 2 */
}
UPDATE:
Now I'm confused. The initialization passes after reset or power cycle. I get the error only directly after flashing the board. Why is that?
