Posted on March 13, 2017 at 09:29
Hi
I know this has been a while but I want to open this case up again as I am experiencing the same issue.
After performing the following:
/* StartDefaultTask function */
void StartDefaultTask(void const * argument)
{
for(;;) {
/*##-1- Link the micro SD disk I/O driver ##################################*/
if(FATFS_LinkDriver(&SD_Driver, (char *)SD_Path) == 0) {
/*##-2- Register the file system object to the FatFs module ##############*/
if(f_mount((FATFS *)&SDFatFs, (TCHAR const*)SD_Path, 0) == FR_OK) {
for(;;) {
fr = WriteSDCard();
osDelay(1000);
if(fr) {
f_mount(NULL,'',1);
break;
}
}
/*##-11- Unlink the micro SD disk I/O driver ###############################*/
FATFS_UnLinkDriver((char *)SD_Path);
}
}
}
}
FRESULT WriteSDCard() {
char * filename = 'TEST.txt';
char Buf[7] = {'H','e','l','l','o','
','
'};
uint8_t BufLen = 7;
FRESULT fr;
fr=f_open((FIL *)&MyFile, (char *)filename, FA_OPEN_ALWAYS | FA_READ | FA_WRITE);
if(fr){
return fr;
}
fr = f_lseek((FIL *)&MyFile,MyFile.fsize);
if(fr){
return fr;
}
fr= f_write((FIL *)&MyFile, (uint8_t *)Buf, BufLen, (void *)&BytesWritten);
if(fr){
return fr;
}
fr=f_close((FIL *)&MyFile);
if(fr){
return fr;
}
}
�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?
If WriteSDCard returns anything but FR_OK then when it unlinks the driver/unmounts and tries to link/mount again i get stuck in this while loop forever looking for the start bit:
#ifdef SDIO_STA_STBITERR
while(!__HAL_SD_SDIO_GET_FLAG(hsd, SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_DBCKEND | SDIO_FLAG_STBITERR))
#else /* SDIO_STA_STBITERR not defined */
while(!__HAL_SD_SDIO_GET_FLAG(hsd, SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_DBCKEND))
#endif /* SDIO_STA_STBITERR */
{
if(__HAL_SD_SDIO_GET_FLAG(hsd, SDIO_FLAG_RXDAVL))
{
*(tempscr + index) = SDIO_ReadFIFO(hsd->Instance);
index++;
}
}�?�?�?�?�?�?�?�?�?�?�?�?
I am using CubeMx 4.0 STM32Cube V1.0, RTOS is also enabled.
Am I possibly seeing WriteSDCard return an error if the task has context switched during an f_*** operation?
Thanks
