Posted on February 19, 2018 at 05:27
Hi, all
Again, the latest STM32CubeMX V4.24 with STM32F4 HAL firmware V1.19 is great and works well for FATFS R0.12C!
I guess some of you CANNOT mount or open files properly could be one of the following issues:
1. Make sure the project setting of heap and stack sizes are enough, for example
Heap size: 0x1000
Stack size: 0x800
2. Make sure the number of files opened simultaneously >=2, please change the number if you open or create files more than 2!
3. If you are going to use DMA, then you have to activate the DMA settings at SDIO
If you still have problems, please refer to some examples of STM32CubeMX located at ''C:\Users\xxx\STM32Cube\Repository\STM32Cube_FW_F4_V1.19.0\Projects''
Good luck and cheers
Bardeen LAI
Posted on February 22, 2018 at 07:16 
Hi,
I have tested FATFS by use of DMA under FreeRTOS, it works!
Here is the screen capture of setting STM32CubeMX V4.24
Project Setting:
Make sure FATFS configuration ''Use dma template'' enabled:
SDIO settings:
Enable NVIC
and DMA settings
Then, tune the FreeRTOS, stack and heap sizes
After generating codes, you have to modify the following files:
A. sd_diskio.c (as told by
), you have to insert the following code at the end of the file#endif /* _USE_IOCTL == 1 *//* USER CODE BEGIN afterIoctlSection *//* can be used to modify previous code / undefine following code / add new code *//* USER CODE END afterIoctlSection *//* USER CODE BEGIN callbackSection *//* can be used to modify / following code or add new code */void HAL_SD_TxCpltCallback(SD_HandleTypeDef *hsd){ osMessagePut(SDQueueID, WRITE_CPLT_MSG, osWaitForever);}void HAL_SD_RxCpltCallback(SD_HandleTypeDef *hsd){ osMessagePut(SDQueueID, READ_CPLT_MSG, osWaitForever);}/* USER CODE END callbackSection */�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?NOTE: HAL_SD_ReadBlocks_DMA and HAL_SD_WriteBlocks_DMA require DMA complete TX/RX interrupt to signal the foreground process whether the DMA TX/RX has been done or not.
B. If you are using MDK-ARM as your IDE, you should eliminate the ''U'', otherwise it would cause compiler error in port.c
Modify the stm32f407xx.h header file to fix error:
#define __NVIC_PRIO_BITS 4 /*!< STM32F4XX uses 4 Bits for the Priority Levels */�?C. Modify the freertos.c file, insert the FATFS file test procedure:
/* USER CODE BEGIN FunctionPrototypes */void SDFileTest(void){ FIL MyFile; FRESULT res; /* FatFs function common result code */ uint32_t byteswritten, bytesread; /* File write/read counts */ uint8_t wtext[] = ''Hello, STM32F4 FatFs!''; /* File write buffer */ uint8_t rtext[100]; /* File read buffer */// printf(''SD File create''); // Create file test if (f_open(&MyFile, ''STMTXT'', FA_CREATE_ALWAYS | FA_WRITE) != FR_OK) Error_Handler(); res = f_write(&MyFile, wtext, sizeof(wtext), (void *)&byteswritten); if ((byteswritten == 0) || (res != FR_OK)) Error_Handler(); f_close(&MyFile);// printf(''done!'');// printf(''SD File open''); // Read file test if (f_open(&MyFile, ''STMTXT'', FA_READ) != FR_OK) Error_Handler(); res = f_read(&MyFile, rtext, sizeof(rtext), (UINT*)&bytesread); if ((bytesread == 0) || (res != FR_OK)) Error_Handler(); f_close(&MyFile); if ((bytesread != byteswritten)) Error_Handler();// printf(''done!'');}�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?and insert the following piece of code to
/* StartDefaultTask function */void StartDefaultTask(void const * argument){ /* init code for FATFS */ MX_FATFS_Init(); /* USER CODE BEGIN StartDefaultTask */ if (f_mount(&SDFatFS, (TCHAR const*)SDPath, 0) != FR_OK) Error_Handler(); SDFileTest(); /* Infinite loop */ for(;;) { osDelay(1); } /* USER CODE END StartDefaultTask */}�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?I could email you the complete project file if you need.
Good luck and cheers
Bardeen LAI
