1 ACCEPTED SOLUTION
Accepted Solutions
#define _SD_POW_ON HAL_GPIO_WritePin(GPIOB, SD_EN_Pin, GPIO_PIN_RESET)
#define _SD_POW_OFF HAL_GPIO_WritePin(GPIOB, SD_EN_Pin, GPIO_PIN_SET)
#define _delSD(en) \
do \
{ \
f_mount(NULL, "0:", (en & 1)); \
closeSD(); \
sdInfo.busy = _IDLE; \
} while (0)
int main(void)
{
HAL_Init();
SystemClock_Config();
MX_GPIO_Init();
MX_LPTIM1_Init();
MX_USART3_UART_Init();
MX_RTC_Init();
MX_SPI1_Init();
MX_SDMMC1_SD_Init();
MX_FATFS_Init();
_VDP_ON;
_SD_POW_ON; // SD POWER OPEN
HAL_Delay(100);
fm25v_init(); // FM25V Init
// fm25v_SafeInit();
scanSD(); // Get SD card capacity
closeSD();//close SD
__HAL_RTC_WAKEUPTIMER_ENABLE_IT(&hrtc, RTC_IT_WUT);
while (1)
{
sd_test();
EnterStop2ModeLPTIM();
}
}
void sd_test(void)
{
openSD();
FRESULT ret;
FIL *sdFile = NULL;
BYTE *buffer = NULL;
UINT bytesWritten = 0;
sdFile = (FIL *)malloc_mem(sizeof(FIL));
if (sdFile == NULL)
{
return;
}
BYTE writeBuffer[] = "\r\n\r\nhello world!\r\nasdfgdsagdfasgdsa\r\n";
ret = f_mount(&SDFatFS, "0:", 0);
if (ret != FR_OK && ret != FR_NO_FILESYSTEM)
{
printf("f_mount error! ret: %d\r\n", ret);
free_mem(sdFile);
return;
}
else if (ret == FR_NO_FILESYSTEM)
{
printf("FATFS file system not detected, perform formatting...\r\n");
ret = f_mkfs("0:", 0, 4096, buffer, _MAX_SS);
if (ret == FR_OK)
{
printf("Format successful！\r\n");
f_mount(NULL, "0:", 0);
ret = f_mount(&SDFatFS, "0:", 0);
}
else
{
printf("Format failed!\r\n");
free_mem(sdFile);
return;
}
}
else
{
printf("f_mount success!\r\n");
}
printf("\r\n ========== write test ==========\r\n");
ret = f_open(sdFile, "hello.txt", FA_CREATE_ALWAYS | FA_WRITE);
if (ret == FR_OK)
{
printf("open file sucess!\r\n");
ret = f_write(sdFile, writeBuffer, sizeof(writeBuffer), &bytesWritten);
if (ret == FR_OK)
{
printf("write \"%s\" success!\r\nwrite len:%d\r\n", writeBuffer, bytesWritten);
f_close(sdFile);
_delSD(0);
}
else
{
printf("write error! ret:%d \r\n", ret);
f_close(sdFile);
free_mem(sdFile);
return;
}
}
else
{
printf("ret = %d\r\n", ret);
printf("open file error!\r\n");
f_close(sdFile);
free_mem(sdFile);
return;
}
free_mem(sdFile);
}
void closeSD(void)
{
// sdSdmmcIO();
HAL_SD_MspDeInit(&hsd1);
_SD_POW_OFF;
// sdSta = STA_NOINIT;
}
void openSD(void)
{
// sdSdmmcInit();
HAL_SD_MspInit(&hsd1);
// BSP_SD_Init();
_SD_POW_ON;
}
void EnterStop2ModeLPTIM(void)
{
// printf("Start to enter Stop2 mode\r\n");
__HAL_RCC_PWR_CLK_ENABLE();
HAL_RCCEx_WakeUpStopCLKConfig(RCC_STOP_WAKEUPCLOCK_MSI);
HAL_LPTIM_MspInit(&hlptim1);
HAL_LPTIM_TimeOut_Start_IT(&hlptim1, 65535, 65535);
HAL_SuspendTick();
HAL_DBGMCU_EnableDBGStopMode();
__HAL_RCC_PWR_CLK_ENABLE();
HAL_PWREx_EnterSTOP2Mode(PWR_STOPENTRY_WFI);
}
void ExitStop2ModeLPTIM(void)
{
HAL_LPTIM_MspDeInit(&hlptim1);
SystemClock_Config();
HAL_ResumeTick();
SCB->SCR &= ~SCB_SCR_SLEEPONEXIT_Msk;
// printf("In the EXTI to wake up!\r\n");
}
void HAL_LPTIM_CompareMatchCallback(LPTIM_HandleTypeDef *hlptim)
{
ExitStop2ModeLPTIM();
}This is my code, which is generated by cubemx using STM32L431 code. The logic of the code is to first call the openSD() function in while (1), reconfigure the IO port of SDMMC, and then turn on the power supply of the SD card. After the SD card is successfully written, it will call _delSD (0); SDMMC will be enabled inside, and SD card power will be turned off, then enter STOP2 mode. This mode wakes up in LPTIM interrupt, and after waking up, SystemClock_Cnfig() is called again; Then my question is why FR-DISK-ERR (1) is returned in f_open?
