Posted on November 23, 2017 at 08:50
We are testing usbh mass storage using the nucleo_f207zg board.
STM32Cube_FW_F2_V1.7.0 \ Projects \ STM32F207ZG-Nucleo \ Applications \ FatFs \ FatFs_USBDisk received from the homepage is detected without any problem.However, I created it directly as a cube (attached file) -> I tested another sample,
I can not find usb. Debugging shows that the appli_state value is still 0x00.Does the nucleo board have characteristics? I want to solve this problem by all means.
Help !!! I also want to design another part based on Usbh mass storage.
I attached the main / usb_host / cube file and image capture image below.
Please help me. =) Have a good day!
main.c
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void MountUSB(void)
{ res = f_mount(&USBDISKFatFs, USBHPath, 0);// if(res != FR_OK) // DisplayError(); }void UnMountUSB(void){ res = f_mount(NULL, '''', 0); // if(res != FR_OK) // DisplayError();}void OpenFile(){ res = f_open(&MyFile, ''123.txt'', FA_WRITE|FA_READ);// if(res != FR_OK)// DisplayError(); }void CloseFile(){ res = f_close(&MyFile);// if(res != FR_OK)// DisplayError();}void ReadFile(void){ res = f_read(&MyFile, text, sizeof(text), (void*)&bytesRead);// if(res != FR_OK || bytesRead == 0)// DisplayError(); }void WriteFile(void){ //Increase Number int16_t number = atoi((char const*)text); number++; memset(text, 0, sizeof(text)); sprintf((char *)text, ''%d'', number); //Move cursor res = f_lseek(&MyFile, 0);// if(res != FR_OK)// DisplayError(); //Write Number int16_t len = strlen((char const *)text); res = f_write(&MyFile, text, len, (void*)&bytesWritten);// if(res != FR_OK || bytesWritten == 0)// DisplayError();}int main(void)
{ HAL_Init(); SystemClock_Config(); MX_GPIO_Init(); MX_I2C1_Init(); MX_RTC_Init(); MX_USART2_UART_Init(); MX_USART3_UART_Init(); MX_USART6_UART_Init(); MX_USB_HOST_Init(); MX_FATFS_Init(); MX_USART1_UART_Init(); MountUSB(); while (1) { MX_USB_HOST_Process(); if(Appli_state == APPLICATION_READY) { OpenFile(); ReadFile(); WriteFile(); CloseFile(); } }}usb_host.c
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extern void MountUSB(void);
extern void UnMountUSB(void);USBH_HandleTypeDef hUsbHostFS;ApplicationTypeDef Appli_state = APPLICATION_IDLE;static void USBH_UserProcess (USBH_HandleTypeDef *phost, uint8_t id); void MX_USB_HOST_Init(void){ USBH_Init(&hUsbHostFS, USBH_UserProcess, HOST_FS); USBH_RegisterClass(&hUsbHostFS, USBH_MSC_CLASS); USBH_Start(&hUsbHostFS);}void MX_USB_HOST_Process(void){ USBH_Process(&hUsbHostFS); }static void USBH_UserProcess (USBH_HandleTypeDef *phost, uint8_t id){ switch(id) { case HOST_USER_SELECT_CONFIGURATION:// CLCD_Clear(&hi2c1);// CLCD_PrintString(&hi2c1, 0, 0, ''CONFIGURATION''); break; case HOST_USER_DISCONNECTION: // CLCD_Clear(&hi2c1); // CLCD_PrintString(&hi2c1, 0, 0, ''DISCONNECTION''); Appli_state = APPLICATION_DISCONNECT; UnMountUSB(); break; case HOST_USER_CLASS_ACTIVE: // CLCD_Clear(&hi2c1); // CLCD_PrintString(&hi2c1, 0, 0, ''CLASS_ACTIVE''); Appli_state = APPLICATION_READY; break; case HOST_USER_CONNECTION: // CLCD_Clear(&hi2c1); // CLCD_PrintString(&hi2c1, 0, 0, ''CONNECTION''); Appli_state = APPLICATION_START; MountUSB(); break; default: break;} /* USER CODE END CALL_BACK_1 */}#mass-storage #nucleo #usb