stm32f207用stm32cube生成usb mass storage class无法识别

/* Includes ------------------------------------------------------------------*/

include "stm32f4xx_hal.h"



include "usb_device.h"



include "gpio.h"



/* USER CODE BEGIN Includes */

include "usbd_cdc.h"



/* USER CODE END Includes */



/* Private variables ---------------------------------------------------------*/



/* USER CODE BEGIN PV */



/* USER CODE END PV */



/* Private function prototypes -----------------------------------------------*/

void SystemClock_Config(void);



/* USER CODE BEGIN PFP */



/* USER CODE END PFP */



/* USER CODE BEGIN 0 */

uint16_t mmss;



/* USER CODE END 0 */



int main(void)

{



/* USER CODE BEGIN 1 */

uint8_t UserTxBuffer55 = 0x55;

/* 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_USB_DEVICE_Init();



/* USER CODE BEGIN 2 */



/* USER CODE END 2 */



/* USER CODE BEGIN 3 */

/* Infinite loop */

while (1)

{

    if(mmss>=500)

    {

    HAL_GPIO_TogglePin (GPIOD,GPIO_PIN_12);



    USBD_CDC_SetTxBuffer(&hUsbDeviceFS, (uint8_t*)&UserTxBuffer55, 1);



USBD_CDC_TransmitPacket(&hUsbDeviceFS);



    mmss = 0;



    }



}

/* USER CODE END 3 */



}



/** System Clock Configuration

*/

void SystemClock_Config(void)

{



RCC_OscInitTypeDef RCC_OscInitStruct;

RCC_ClkInitTypeDef RCC_ClkInitStruct;



__PWR_CLK_ENABLE();



__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);



RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;

RCC_OscInitStruct.HSEState = RCC_HSE_ON;

RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;

RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;

RCC_OscInitStruct.PLL.PLLM = 8;

RCC_OscInitStruct.PLL.PLLN = 336;

RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;

RCC_OscInitStruct.PLL.PLLQ = 7;

HAL_RCC_OscConfig(&RCC_OscInitStruct);



RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK|RCC_CLOCKTYPE_PCLK1

                          |RCC_CLOCKTYPE_PCLK2;

RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;

RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;

RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;

RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;

HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5);



}



/* USER CODE BEGIN 4 */

void HAL_SYSTICK_Callback(void)

{

/* NOTE : This function Should not be modified, when the callback is needed,

        the HAL_SYSTICK_Callback could be implemented in the user file

*/

mmss++;

}

/* USER CODE END 4 */

ifdef USE_FULL_ASSERT



/**

* [url=home.php?mod=space&uid=247401]@brief[/url] Reports the name of the source file and the source line number

* where the assert_param error has occurred.

* @param file: pointer to the source file name

* @param line: assert_param error line source number

* @retval None

*/

void assert_failed(uint8_t* file, uint32_t line)

{

/* USER CODE BEGIN 6 */

/* User can add his own implementation to report the file name and line number,

ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */

/* USER CODE END 6 */



}

endif