Hello,
I created an app form my STM32H7474I-DISCO board to test SD card based on this example. I spent a couple of hours with porting it to H747I-DISCO board, but finally it worked: I could save and load a file from an SD Card.
I implemented the whole thing into my TouchGFX based project on same discovery board. I could build and run the project but when I tried to write a new file the SD Card was mounted fine but creating a new file failed with FR_NOT_READY (The physical drive cannot work) error.
uint32_t byteswritten;
if(f_mount(&SDFatFS, (TCHAR const*)SDPath, 0) != FR_OK)
{
Error_Handler();
}
else
{
//Open file for writing (Create)
if(f_open(&SDFile, "STM32.TXT", FA_CREATE_ALWAYS | FA_WRITE) != FR_OK)
{
Error_Handler();
}
else
{
//Write to the text file
res = f_write(&SDFile, wtext, strlen((char *)wtext), (void *)&byteswritten);
if((byteswritten == 0) || (res != FR_OK))
{
Error_Handler();
}
else
{
f_close(&SDFile);
}
}
}
The same code, the same development board, the same SD card works fine if I have no TouchGFX nor FreeTOS. Is this some initializing/usage error or the same code cannot be run under TouchGFX nor FreeTOS?
Thanks,
Louis
