Posted on July 08, 2015 at 09:25I have a STM32L152C Discovery board. I want to use a 1GB FAT SD Card with STM32Cube and EWARM ide, but there is an error.
pins:
STM --- SD Module
PA5 SCK
PA4 CS
MISO MISO
MOSI MOSI
Ext_3V 3.3V
GND GND
I started STM32Cube, Selected my board ''STM32L152C-DISCO'' in board selector.
I checked FATFS->User-defined check box.
RCC.High Speed Clock (HSE) -> Crystal/Ceramic Resonator
SPI1->Full-Duplex Master
And I Created EWARM project.
f_mount() returns 0 and f_open() returns 13, even if I disconnect my sd card from sd module!
int main(void)
{
printf(''Starting ...\n'');
GPIO_PinState pinState = HAL_GPIO_ReadPin(GPIOA, GPIO_PIN_15);
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_15, GPIO_PIN_RESET);
/* 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_SPI1_Init();
MX_FATFS_Init();
FATFS SDFatFs; // File system object for SD card logical drive
FIL MyFile; // File object
volatile FRESULT res; // FatFs function common result code
res = f_mount(&SDFatFs, ''0:'', 0); // returns 0
if(res != FR_OK)
printf(''f_mount Error : %d\n'', res); // there is no error
else
{
printf(''f_mount OK\n'');
res = f_open(&MyFile, ''file.txt'', FA_CREATE_ALWAYS | FA_WRITE); // returns 13
if(res != FR_OK)
printf(''f_open Error : %d\n'', res); // f_open Error : 13
else
{
printf(''f_open OK\n'');
f_close(&MyFile);
printf(''file opened.'');
}
f_mount(0, '''', 1);
}
}
#stm32l152c-sd-fatfs
