Posted on October 28, 2016 at 10:48
Hey guys I am trying to interface sd card with stm32F4 but things are not working,code was developed using cubemx
int main(void)
{
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MCU Configuration----------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* Configure the system clock */
SystemClock_Config();
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_SDIO_SD_Init();
MX_FATFS_Init();
HAL_Delay(1000);
/* USER CODE BEGIN 2 */
if(f_mount(&mynewdiskFatFs,(const TCHAR*)SD_Path, 0) == FR_OK)
{
if(f_open(&MyFile, ''abc.txt'', FA_READ ) == FR_OK)
{
// GPIO_SetBits(GPIOD, GPIO_Pin_15);
if(f_read(&MyFile, wtext, sizeof(wtext), (void *)&wbytes) ==FR_OK);
{
f_close(&MyFile);
}
}
}
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
1]Interface is sdio 1 bit mode(due to pin constraints)
2]Sd card 8Gb formated with default allocation size
Steps taken to debug:
I single step through the code fmount is successful but when i step through fopen there a error code atfind_volume() returningFR_NOT_READY.
Hardware conections :I have arduino micro sd breakout board with SPI pins so connection are
DI---SDIO_CMD
DO---SDIO_D0
SCLK---SDIO_SCLK
#stm32f4-discovery-sd-card
