Posted on November 07, 2017 at 10:09Hi,
I'm using STM32F4 Discovery board with its base-board extension that has a micro-sd card slot. I'm using the STMCubeMX and its current latest F4 firmware which is
STMCubeMX FW F4
1.17.0.
There is no SD card example for STM32F4 Discovery board but I found an example code for another discovery board which is located at the following directory:
STM32Cube_FW_F4_V1.17.0\Projects\STM32469I-Discovery\Applications\FatFs\FatFs_uSD
I've tried many different combinations of possible solutions using the libraries offered in STM32CubeMX with the help of that example project, but I have been getting errors although it mounts succesfully as the error code suggests.
Here are the important parts of my code:
/* USER CODE BEGIN 0 */
FATFS SDFatFs; /* File system object for SD disk logical drive */
FIL MyFile; /* File object */
static uint8_t buffer[_MAX_SS]; /* a work buffer for the f_mkfs() */
FRESULT res; /* FatFs function common result code */
// uint32_t byteswritten, bytesread; /* File write/read counts */
// uint8_t wtext[] = 'This is STM32 working with FatFs\n'; /* File write buffer */
// uint8_t rtext[100];
int retlink = 0xFF, retmount = 0xFF, retmkfs = 0xFF, retopen = 0xFF, retwrite = 0xFF, retclose = 0xFF;
/* USER CODE END 0 */
//...........................................
//...........................................
/* USER CODE BEGIN 2 */
char SDPath[4];
SDPath[0]='0';
SDPath[1]=':';
SDPath[2]='/';
SDPath[3]=0;
char fn[11];
fn[0]='0'; fn[1]=':'; fn[2]='s'; fn[3]='t'; fn[4]='m'; fn[5]='3'; fn[6]='2'; fn[7]='.'; fn[8]='t'; fn[9]='x'; fn[10]='t';// fn[11]='/'; fn[12]=0;
HAL_GPIO_WritePin(GPIOD, GPIO_PIN_15, GPIO_PIN_SET);
HAL_Delay(100);
retmount = f_mount(&SDFatFs, '0:', 0); /* (0) Succeeded */
HAL_GPIO_WritePin(GPIOD, GPIO_PIN_14, GPIO_PIN_SET);
HAL_Delay(1000);
retopen = f_open(&MyFile, '0:stm32.txt', FA_READ);
HAL_GPIO_WritePin(GPIOD, GPIO_PIN_13, GPIO_PIN_SET);
HAL_Delay(100);
retwrite = f_write(&MyFile, wtext, sizeof(wtext), (void *)&byteswritten);
HAL_GPIO_WritePin(GPIOD, GPIO_PIN_12, GPIO_PIN_SET);
HAL_Delay(100);
retclose = f_close(&MyFile);
HAL_Delay(100);
f_mount(0, '0:', 0);
Here is my SDIO init function:
/* SDIO init function */
static void MX_SDIO_SD_Init(void)
{
hsd.Instance = SDIO;
hsd.Init.ClockEdge = SDIO_CLOCK_EDGE_RISING;
hsd.Init.ClockBypass = SDIO_CLOCK_BYPASS_DISABLE;
hsd.Init.ClockPowerSave = SDIO_CLOCK_POWER_SAVE_DISABLE;
hsd.Init.BusWide = SDIO_BUS_WIDE_1B;
hsd.Init.HardwareFlowControl = SDIO_HARDWARE_FLOW_CONTROL_DISABLE;
hsd.Init.ClockDiv = 118;
}
While I'm debugging the project, I get following error returns:
for f_open: (3) The physical drive cannot work
for f_write: (9) The file/directory object is invalid
for f_close: (9) The file/directory object is invalid
I'll be glad to hear for any suggestions to solve this issue.
Cheers,
Ogulcan
#stm32cubemx #stm32f4-discovery #sdcard #fatfs #sdio #fatfs-sdio #stm32cube_fw_f4_v1.17.0 #microsd #stm32f4
