USBHIDSystemControl.cpp

// Copyright 2015-2020 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "USBHID.h"

#if CONFIG_TINYUSB_HID_ENABLED

#include "USBHIDSystemControl.h"

static const uint8_t report_descriptor[] = {
    TUD_HID_REPORT_DESC_SYSTEM_CONTROL(HID_REPORT_ID(HID_REPORT_ID_SYSTEM_CONTROL))
};

USBHIDSystemControl::USBHIDSystemControl(): hid(){
    static bool initialized = false;
    if(!initialized){
        initialized = true;
        hid.addDevice(this, sizeof(report_descriptor));
    }
}

uint16_t USBHIDSystemControl::_onGetDescriptor(uint8_t* dst){
    memcpy(dst, report_descriptor, sizeof(report_descriptor));
    return sizeof(report_descriptor);
}

void USBHIDSystemControl::begin(){
    hid.begin();
}

void USBHIDSystemControl::end(){
}

bool USBHIDSystemControl::send(uint8_t value){
    return hid.SendReport(HID_REPORT_ID_SYSTEM_CONTROL, &value, 1);
}

size_t USBHIDSystemControl::press(uint8_t k){
    if(k > 3){
        return 0;
    }
    return send(k);
}

size_t USBHIDSystemControl::release(){
    return send(0);
}

#endif /* CONFIG_TINYUSB_HID_ENABLED */