通过 DfuSe 工具控制程序跳进 DFU 模式

#define USBD_CUSTOM_HID_REPORT_DESC_SIZE 23

/** Usb HID report descriptor. */

__ALIGN_BEGIN static uint8_t CUSTOM_HID_ReportDesc_FS[USBD_CUSTOM_HID_REPORT_DESC_SIZE]

__ALIGN_END =

{

/* USER CODE BEGIN 0 */

0x06, 0x00, 0xFF, /* USAGE_PAGE (Vendor Page: 0xFF00) */

0x09, 0x01, /* USAGE (Demo Kit) */

0xa1, 0x00, /* COLLECTION (Physical) */

0x85, 0x80, /* REPORT_ID (128) */

0x09, 0x55, /*USAGE (LED 1) */

0x15, 0x00, /* LOGICAL_MINIMUM (0) */

0x26, 0xFF, 0x00, /* LOGICAL_MAXIMUM (255) */

0x75, 0x08, /* REPORT_SIZE (8 bits) */

0x95, 0x01, /* REPORT_COUNT (1) */

0xB1, 0x82, /* FEATURE (Data,Var,Abs,Vol */

/* USER CODE END 0 */

0xC0 /* END_COLLECTION */

};

static int8_t CUSTOM_HID_OutEvent_FS(uint8_t event_idx, uint8_t state)

{

/* USER CODE BEGIN 6 */

extern RTC_HandleTypeDef hrtc;

if(event_idx ==0x80 && state ==0x55)

{

__HAL_RCC_PWR_CLK_ENABLE();

HAL_PWR_EnableBkUpAccess();

HAL_RTCEx_BKUPWrite(&hrtc,RTC_BKP_DR0,0x32F2);

HAL_PWR_DisableBkUpAccess();

HAL_NVIC_SystemReset();

while (1);

}

return (USBD_OK);

/* USER CODE END 6 */

}

/* USER CODE BEGIN 2 */

if (((*(__IO uint32_t*)USBD_DFU_APP_DEFAULT_ADD) & 0x2FFE0000 ) != 0x20000000)

{

jump2App =JUMP_FLAG_DFU;

}

if(jump2App !=JUMP_FLAG_DFU)

{

__HAL_RCC_PWR_CLK_ENABLE();

HAL_PWR_EnableBkUpAccess();

if(0x32F2 ==HAL_RTCEx_BKUPRead(&hrtc,RTC_BKP_DR0))//检测备份域寄存器中的标志

{

HAL_RTCEx_BKUPWrite(&hrtc,RTC_BKP_DR0,0);

jump2App = JUMP_FLAG_DFU;

}

HAL_PWR_DisableBkUpAccess();

}

if(jump2App == JUMP_FLAG_INIT)

{

if(HAL_GPIO_ReadPin(GPIOA,GPIO_PIN_0) !=GPIO_PIN_SET)

{

jump2App = JUMP_FLAG_APP;

}

else

{

jump2App =JUMP_FLAG_DFU ;

}

}

if(jump2App ==JUMP_FLAG_APP)

{

/* Jump to user application */

JumpAddress = *(__IO uint32_t*) (USBD_DFU_APP_DEFAULT_ADD + 4);

JumpToApplication = (pFunction) JumpAddress;

/* Initialize user application's Stack Pointer */

__set_MSP(*(__IO uint32_t*) USBD_DFU_APP_DEFAULT_ADD);

JumpToApplication();

}

//进入到 DFU 模式

MX_USB_DEVICE_Init();

/* USER CODE END 2 */