使用STM32CubeMX生成USB_HOST_HID工程[添加对CAPS_LOCK指示灯的控制][SetReport]

在之前(使用STM32CubeMX生成USB_HOST_HID工程)的基础上进行修改

在结合之前在pc上的测试 USB之HID类Set_Report Request[调试手记1]

测试代码如下：

/* USER CODE BEGIN 1 */

void USBH_HID_EventCallback(USBH_HandleTypeDef *phost)

{

   HID_TypeTypeDef   type = HID_UNKNOWN;

   USBH_ErrLog("USBH_HID_EventCallback");

   type = USBH_HID_GetDeviceType(phost);

   switch(type)

   {

       case HID_KEYBOARD:

       {

            HID_KEYBD_Info_TypeDef *keyboard_info;

            char ascii;

            uint8_t reportBuff[1];

      static uint8_t led_flag =0;

            keyboard_info = USBH_HID_GetKeybdInfo(phost);

            if( keyboard_info != NULL )

            {

                ascii = USBH_HID_GetASCIICode(keyboard_info);

                if( ascii !=  )

                {

                    USBH_UsrLog("%c",ascii);

                }

//                USBH_UsrLog("state %x",keyboard_info->state);

//                USBH_UsrLog("lctrl %x",keyboard_info->lctrl);

//                USBH_UsrLog("lshift %x",keyboard_info->lshift);

//                USBH_UsrLog("lalt %x",keyboard_info->lalt);

//                USBH_UsrLog("lgui %x",keyboard_info->lgui);

//                USBH_UsrLog("rctrl %x",keyboard_info->rctrl);

//                USBH_UsrLog("rshift %x",keyboard_info->rshift);

//                USBH_UsrLog("rgui %x",keyboard_info->rgui);



                USBH_UsrLog("keys[6] %x %x %x %x %x %x ",keyboard_info->keys[0],\

                                                         keyboard_info->keys[1],\

                                                         keyboard_info->keys[2],\

                                                         keyboard_info->keys[3],\

                                                         keyboard_info->keys[4],\

                                                         keyboard_info->keys[5]);

                if(keyboard_info->keys[0] == 0x39)

                {

                    led_flag=~led_flag;

                    if(led_flag)

                    {

                        reportBuff[0] = 0X02;

                        USBH_HID_SetReport (phost,2,0,reportBuff,1);

                        USBH_UsrLog("reportBuff %02x ",reportBuff[0]);

                    }

                    else

                    {

                        reportBuff[0] = 0X00;

                        USBH_HID_SetReport (phost,2,0,reportBuff,1);

                        USBH_UsrLog("reportBuff %02x ",reportBuff[0]);

                    }

                }

            }

       }

       break;

       case HID_MOUSE:

       {

           HID_MOUSE_Info_TypeDef *mouse_info;

           mouse_info = USBH_HID_GetMouseInfo(phost);

           USBH_UsrLog("mouse_info X%d, Y%d ,button %d %d %d",mouse_info->x,mouse_info->y,mouse_info->buttons[],mouse_info->buttons[],mouse_info->buttons[]);

       }

       break;

       default:

       break;

   }

}

/* USER CODE END 1 */

通过capslock按键按下和释放等可以看到CAPS_LOCK指示灯变化。但是会发现需要按多次才能翻转CAPS_LOCK指示灯。

而我们在rtt中可以看到我们赋值reportBuff正常变化。

我们继续给USBH_HID_SetReport的返回结果加log信息。

/* USER CODE BEGIN 1 */

void USBH_HID_EventCallback(USBH_HandleTypeDef *phost)

{

   HID_TypeTypeDef   type = HID_UNKNOWN;

   USBH_ErrLog("USBH_HID_EventCallback");

   type = USBH_HID_GetDeviceType(phost);

   switch(type)

   {

       case HID_KEYBOARD:

       {

            HID_KEYBD_Info_TypeDef *keyboard_info;

            char ascii;

            uint8_t reportBuff[];

            USBH_StatusTypeDef status         = USBH_BUSY;

            static uint8_t led_flag =;

            keyboard_info = USBH_HID_GetKeybdInfo(phost);

            if( keyboard_info != NULL )

            {

                ascii = USBH_HID_GetASCIICode(keyboard_info);

                if( ascii !=  )

                {

                    USBH_UsrLog("%c",ascii);

                }

//                USBH_UsrLog("state %x",keyboard_info->state);

//                USBH_UsrLog("lctrl %x",keyboard_info->lctrl);

//                USBH_UsrLog("lshift %x",keyboard_info->lshift);

//                USBH_UsrLog("lalt %x",keyboard_info->lalt);

//                USBH_UsrLog("lgui %x",keyboard_info->lgui);

//                USBH_UsrLog("rctrl %x",keyboard_info->rctrl);

//                USBH_UsrLog("rshift %x",keyboard_info->rshift);

//                USBH_UsrLog("rgui %x",keyboard_info->rgui);

                USBH_UsrLog("keys[6] %x %x %x %x %x %x ",keyboard_info->keys[],\

                                                         keyboard_info->keys[],\

                                                         keyboard_info->keys[],\

                                                         keyboard_info->keys[],\

                                                         keyboard_info->keys[],\

                                                         keyboard_info->keys[]);

                if(keyboard_info->keys[] == 0x39)

                {

                    led_flag=~led_flag;

                    if(led_flag)

                    {

                        reportBuff[] = 0X02;

                        status = USBH_HID_SetReport (phost,,,reportBuff,);

                        USBH_UsrLog("USBH_HID_SetReport %02x  reportBuff %02x  ",status,reportBuff[]);

                    }

                    else

                    {

                        reportBuff[] = 0X00;

                        status = USBH_HID_SetReport (phost,,,reportBuff,);

                        USBH_UsrLog("USBH_HID_SetReport %02x  reportBuff %02x  ",status,reportBuff[]);

                    }

                }

            }

       }

       break;

       case HID_MOUSE:

       {

           HID_MOUSE_Info_TypeDef *mouse_info;

           mouse_info = USBH_HID_GetMouseInfo(phost);

           USBH_UsrLog("mouse_info X%d, Y%d ,button %d %d %d",mouse_info->x,mouse_info->y,mouse_info->buttons[],mouse_info->buttons[],mouse_info->buttons[]);

       }

       break;

       default:

       break;

   }

}

/* USER CODE END 1 */

观察log，只有当USBH_HID_SetReport的返回值为  USBH_OK   = 0,时候我们才能看到灯的变化。

那我们继续修改代码

/* USER CODE BEGIN 1 */

void USBH_HID_EventCallback(USBH_HandleTypeDef *phost)

{

    HID_TypeTypeDef   type = HID_UNKNOWN;

    USBH_ErrLog("USBH_HID_EventCallback");

    type = USBH_HID_GetDeviceType(phost);

    switch(type)

    {

    case HID_KEYBOARD:

    {

        HID_KEYBD_Info_TypeDef *keyboard_info;

        char ascii;

        uint8_t reportBuff[];

        USBH_StatusTypeDef status         = USBH_BUSY;

        static uint8_t led_flag =;

        keyboard_info = USBH_HID_GetKeybdInfo(phost);

        if( keyboard_info != NULL )

        {

            ascii = USBH_HID_GetASCIICode(keyboard_info);

            if( ascii !=  )

            {

                USBH_UsrLog("%c",ascii);

            }

//                USBH_UsrLog("state %x",keyboard_info->state);

//                USBH_UsrLog("lctrl %x",keyboard_info->lctrl);

//                USBH_UsrLog("lshift %x",keyboard_info->lshift);

//                USBH_UsrLog("lalt %x",keyboard_info->lalt);

//                USBH_UsrLog("lgui %x",keyboard_info->lgui);

//                USBH_UsrLog("rctrl %x",keyboard_info->rctrl);

//                USBH_UsrLog("rshift %x",keyboard_info->rshift);

//                USBH_UsrLog("rgui %x",keyboard_info->rgui);

            USBH_UsrLog("keys[6] %x %x %x %x %x %x ",keyboard_info->keys[],\

                        keyboard_info->keys[],\

                        keyboard_info->keys[],\

                        keyboard_info->keys[],\

                        keyboard_info->keys[],\

                        keyboard_info->keys[]);

            if(keyboard_info->keys[] == 0x39)

            {

                led_flag=~led_flag;

                if(led_flag)

                {

                    reportBuff[] = 0X02;

                    do

                    {

                        status = USBH_HID_SetReport (phost,2,0,reportBuff,1);

                    }

                    while(status !=USBH_OK);

                    USBH_UsrLog("USBH_HID_SetReport %02x  reportBuff %02x  ",status,reportBuff[]);

                }

                else

                {

                    reportBuff[] = 0X00;

                    do

                    {

                        status = USBH_HID_SetReport (phost,2,0,reportBuff,1);

                    }

                    while(status !=USBH_OK);

                    USBH_UsrLog("USBH_HID_SetReport %02x  reportBuff %02x  ",status,reportBuff[]);

                }

            }

        }

    }

    break;

    case HID_MOUSE:

    {

        HID_MOUSE_Info_TypeDef *mouse_info;

        mouse_info = USBH_HID_GetMouseInfo(phost);

        USBH_UsrLog("mouse_info X%d, Y%d ,button %d %d %d",mouse_info->x,mouse_info->y,mouse_info->buttons[],mouse_info->buttons[],mouse_info->buttons[]);

    }

    break;

    default:

        break;

    }

}

/* USER CODE END 1 */

好了我们继续测试发现我们按一下CAPS_LOCK后CAPS_LOCK指示灯能进行翻转。