Hi,
Thanks for the quick reply,
I am not dealing with Windows/Linux PC OS. I am testing with STM32 USB MSC Host and Device firmware, in that case i don't thing any issue should happens. What do you think? But i am getting issue when i am writing using FATFS in Device Drive, below is my code sequence to write data....
//******************************************************************************
static void MSC_Application(void)
{
FRESULT res; /* FatFs function common result code */
uint32_t byteswritten, bytesread; /* File write/read counts */
uint8_t wtext[] = "This is STM32 working with FatFs"; /* File write buffer */
uint8_t rtext[100]; /* File read buffer */
/* Register the file system object to the FatFs module */
if(f_mount(&USBDISKFatFs, (TCHAR const*)USBDISKPath, 0) != FR_OK)
{
/* FatFs Initialization Error */
Error_Handler();
}
else
{
/* Create and Open a new text file object with write access */
if(f_open(&MyFile, "STM32.TXT", FA_CREATE_ALWAYS | FA_WRITE) != FR_OK)
{
/* 'STM32.TXT' file Open for write Error */
Error_Handler();
}
else
{
/* Write data to the text file */
res = f_write(&MyFile, wtext, sizeof(wtext), (void *)&byteswritten);
if((byteswritten == 0) || (res != FR_OK))
{
/* 'STM32.TXT' file Write or EOF Error */
Error_Handler();
}
else
{
/* Close the open text file */
f_close(&MyFile);
/* Open the text file object with read access */
if(f_open(&MyFile, "STM32.TXT", FA_READ) != FR_OK)
{
/* 'STM32.TXT' file Open for read Error */
Error_Handler();
}
else
{
/* Read data from the text file */
res = f_read(&MyFile, rtext, sizeof(rtext), (void *)&bytesread);
if((bytesread == 0) || (res != FR_OK))
{
/* 'STM32.TXT' file Read or EOF Error */
Error_Handler();
}
else
{
/* Close the open text file */
f_close(&MyFile);
/* Compare read data with the expected data */
if((bytesread != byteswritten))
{
/* Read data is different from the expected data */
Error_Handler();
}
else
{
/* Success of the demo: no error occurrence */
BSP_LED_On(LED4);
}
}
}
}
}
}
}
//*************************************************************
After USB MSD initialization i am calling MSC_Application() function to check the data can be read or write from the drive. But the code stuck after calling f_open() function.
Also i am confusing what function should i use to write data into the device drive .... STORAGE_Write_FS() ; function to write data or f_write() FATFS function as mention in above code.
Reagrds,
Pankaj
