I can't re-mount SD-Card after pulling out and inserting SD-Card again.
It shows "FR_DISK_ERR" when error occurs.
Please let me know if there is anything I have to follow.
I have CubeMX ver 4.22, FreeRTOS and HAL Driver.
==============================================================
void MountSDIO(void)
{
res = f_mount(&SDFatFs, SD_Path, 1);
if(res != FR_OK)
DisplayError();
}
void UnMountSDIO(void)
{
res = f_mount(NULL, "", 0);
if(res != FR_OK)
DisplayError();
}
void OpenFile()
{
res = f_open(&MyFile, "123.txt", FA_OPEN_ALWAYS|FA_WRITE|FA_READ);
if(res != FR_OK)
{
UnMountSDIO();
osDelay(10);
ResetSDIO();
SDFatFs = SDNull;
osDelay(100);
//MX_FATFS_Init();
MountSDIO();
DisplayError();
}
}
void CloseFile()
{
res = f_close(&MyFile);
if(res != FR_OK)
DisplayError();
}
void ReadFile(void)
{
res = f_read(&MyFile, text, sizeof(text), (void*)&bytesRead);
if(res != FR_OK || bytesRead == 0)
DisplayError();
}
void WriteFile(void)
{
//Increase Number
int16_t number = atoi((char const*)text);
number++;
memset(text, 0, sizeof(text));
sprintf((char *)text, "%d", number);
//Move cursor
res = f_lseek(&MyFile, 0);
if(res != FR_OK)
DisplayError();
//Write Number
int16_t len = strlen((char const *)text);
res = f_write(&MyFile, text, len, (void*)&bytesWritten);
if(res != FR_OK || bytesWritten == 0)
DisplayError();
}
/* USER CODE END 4 */
/* StartMainTask function */
void StartMainTask(void const * argument)
{
/* init code for FATFS */
MX_FATFS_Init();
/* USER CODE BEGIN 5 */
/* Infinite loop */
for(;;)
{
OpenFile();
ReadFile();
WriteFile();
CloseFile();
uint16_t len = (uint16_t)strlen(text);
text[len] = '\r';
text[len+1] = '\n';
HAL_UART_Transmit(&huart1, text, len+2, 50);
DisplayOK();
osDelay(500);
}
/* USER CODE END 5 */
}
