STM32H745: USB MSC stuck at configASSERT
Hello :)
I have created a project for a STM32H745I_Disco board in TouchGFX, imported it to STM32CubeIDE and enabled:
- USB_OTG_FS -- Host_Only and VBUS sensing
- USB_HOST_M7 -- Mass Storage Host Class + Platform settings for enable Pin
- FATFS_M7 -- USB Disk, USE_LFN on, MAX_SS to 4096
- USART2 -- for debugging, asynchronous and 9600 Baudrate
After this, I generated the code. I had to manually add the usb files (STM32_USB_Host_Lib, USB_HOST, FATFS) to the project for it to compile successfully.
Now i want to write to a flash drive connected to the USB_FS port, using the default fatfs functions. All I did in the code is use f_mount, f_open, f_write and f_close for my flash drive, in usb_host.c in USBH_UserProcess under the HOST_USER_CLASS_ACTIVE case, like this:
case HOST_USER_CLASS_ACTIVE:
Appli_state = APPLICATION_READY;
FIL file;
FRESULT res;
char data[] = "Hello, World!";
UINT bytesWritten;
// Attempt to mount the file system
if (f_mount(&USBHFatFS, (TCHAR const*)USBHPath, 0) != FR_OK) {
printf("Mount failed!\n");
return;
}
// Attempt to open the file
printf("Attempting to open the file...\n");
res = f_open(&file, "test.txt", FA_CREATE_ALWAYS | FA_WRITE);
if (res != FR_OK) {
printf("File open failed with error: %d\n", res);
return; // Exit if opening the file fails
}
printf("File opened successfully!\n");
// Attempt to write to the file
printf("Preparing to write data to the file...\n");
res = f_write(&file, data, sizeof(data) - 1, &bytesWritten);
if (res != FR_OK) {
printf("Write operation failed with error: %d\n", res);
} else {
printf("File written successfully! Bytes written: %u\n", bytesWritten);
}
// Attempt to close the file
res = f_close(&file);
if (res != FR_OK) {
printf("File close failed with error: %d\n", res);
} else {
printf("File closed successfully!\n");
}
break;
When debugging, the code is stuck in tasks.c at line 3157: configASSERT( pxUnblockedTCB ); so is it some problem with RTOS scheduling?
When removing parts of my code, f_mount only works fine. Starting from f_open, the code gets stuck.
I have attached my .ioc file, but I really just adjusted the parts mentioned above.
What am I doing wrong here?