qmk-firmware/tmk_core/protocol/mbed/HIDKeyboard.h

#ifndef HIDKEYBOARD_H

#    include "stdint.h"
#    include "stdbool.h"
#    include "USBHID.h"
#    include "report.h"

class HIDKeyboard : public USBDevice {
   public:
    HIDKeyboard(uint16_t vendor_id = 0xFEED, uint16_t product_id = 0xabed, uint16_t product_release = 0x0001);

    bool    sendReport(report_keyboard_t report);
    uint8_t leds(void);

   protected:
    uint16_t         reportLength;
    virtual bool     USBCallback_setConfiguration(uint8_t configuration);
    virtual uint8_t* stringImanufacturerDesc();
    virtual uint8_t* stringIproductDesc();
    virtual uint8_t* stringIserialDesc();
    virtual uint16_t reportDescLength();
    virtual uint8_t* reportDesc();
    virtual uint8_t* configurationDesc();
    // virtual uint8_t * deviceDesc();
    virtual bool USBCallback_request();
    virtual void USBCallback_requestCompleted(uint8_t* buf, uint32_t length);

   private:
    uint8_t led_state;
};

#endif