Posted on August 14, 2016 at 02:53Hi Everyone,
I'm trying to do a simple read or write into a usb pendrive (TOSHIBA 4Gb ) using a custom board with a STM32F207VGT6 mcu on it...
I developed the firmware with STMCubeMX, by using USB_OTG_FS as HOST_ONLY, with Mass Storage Host Class and FATFs...
Here's a part of the code that I used...
/* Includes ------------------------------------------------------------------*/
&sharpinclude ''stm32f2xx_hal.h''
&sharpinclude ''fatfs.h''
&sharpinclude ''rtc.h''
&sharpinclude ''tim.h''
&sharpinclude ''usart.h''
&sharpinclude ''usb_host.h''
&sharpinclude ''gpio.h''
&sharpinclude ''ff_gen_drv.h''
&sharpinclude ''usbh_diskio.h''
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
void Error_Handler(void);
void MX_USB_HOST_Process(void);
/* USER CODE BEGIN PFP */
/* Private function prototypes -----------------------------------------------*/
/* USER CODE END PFP */
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
FIL USB_Fil;
FATFS USB_Fs;
int main(void)
{
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MCU Configuration----------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* Configure the system clock */
SystemClock_Config();
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_RTC_Init();
MX_TIM4_Init();
MX_USART2_UART_Init();
MX_USART3_UART_Init();
MX_FATFS_Init();
MX_USB_HOST_Init();
uint8_t usb_write =1;
uint32_t wbytes; /* File write counts */
uint8_t wtext[] = ''text to write logical disk''; /* File write buffer */
/* USER CODE BEGIN 2 */
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
// USER CODE END WHILE
MX_USB_HOST_Process();
if((FATFS_LinkDriver(&USBH_Driver,USBH_Path))&&usb_write)
{
if(f_mount(&USB_Fs, USBH_Path,0) == FR_OK)
{
if(f_open(&USB_Fil, ''0:/STM32.txt'', FA_CREATE_ALWAYS | FA_WRITE ) == FR_OK)
{
GPIOD->BSRR = GPIO_PIN_13;
usb_write=0; //write once
if(f_write(&USB_Fil,wtext, sizeof(wtext), (void *)&wbytes) == FR_OK)
{
f_close(&USB_Fil);
}
}
}
}
FATFS_UnLinkDriver(USBH_Path);
}
/* USER CODE END 3 */
}
Everytime the result of ''f_open'' funcion is FR_NOT_READY... Why? What I missed? I followed the ''STM32Cube USB host library'' but the result when i called ''f_open'' was the same...
Thanks to everyone who spend some time for my real big mistake.
#stm32cubemx #stm32f2 #usb #host
