Implement USB HID Device Support for ESP32-S2 (#5538)

* Add support and example for USB HID Devices
* Add support and example for USB Vendor

libraries/USB/src/USBHIDGamepad.cpp

@@ -0,0 +1,121 @@
+// 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 "USBHIDGamepad.h"
+
+static const uint8_t report_descriptor[] = {
+    TUD_HID_REPORT_DESC_GAMEPAD(HID_REPORT_ID(HID_REPORT_ID_GAMEPAD))
+};
+
+USBHIDGamepad::USBHIDGamepad(): hid(), _x(0), _y(0), _z(0), _rz(0), _rx(0), _ry(0), _hat(0), _buttons(0){
+    static bool initialized = false;
+    if(!initialized){
+        initialized = true;
+        hid.addDevice(this, sizeof(report_descriptor));
+    }
+}
+
+uint16_t USBHIDGamepad::_onGetDescriptor(uint8_t* dst){
+    memcpy(dst, report_descriptor, sizeof(report_descriptor));
+    return sizeof(report_descriptor);
+}
+
+void USBHIDGamepad::begin(){
+    hid.begin();
+}
+
+void USBHIDGamepad::end(){
+
+}
+
+bool USBHIDGamepad::write(){
+    hid_gamepad_report_t report = {
+        .x       = _x,
+        .y       = _y,
+        .z       = _z,
+        .rz      = _rz,
+        .rx      = _rx,
+        .ry      = _ry,
+        .hat     = _hat,
+        .buttons = _buttons
+    };
+    return hid.SendReport(HID_REPORT_ID_GAMEPAD, &report, sizeof(report));
+}
+
+bool USBHIDGamepad::leftStick(int8_t x, int8_t y){
+    _x = x;
+    _y = y;
+    return write();
+}
+
+bool USBHIDGamepad::rightStick(int8_t z, int8_t rz){
+    _z = z;
+    _rz = rz;
+    return write();
+}
+
+bool USBHIDGamepad::leftTrigger(int8_t rx){
+    _rx = rx;
+    return write();
+}
+
+bool USBHIDGamepad::rightTrigger(int8_t ry){
+    _ry = ry;
+    return write();
+}
+
+bool USBHIDGamepad::hat(uint8_t hat){
+    if(hat > 9){
+        return false;
+    }
+    _hat = hat;
+    return write();
+}
+
+bool USBHIDGamepad::pressButton(uint8_t button){
+    if(button > 31){
+        return false;
+    }
+    _buttons |= (1 << button);
+    return write();
+}
+
+bool USBHIDGamepad::releaseButton(uint8_t button){
+    if(button > 31){
+        return false;
+    }
+    _buttons &= ~(1 << button);
+    return write();
+}
+
+bool USBHIDGamepad::send(int8_t x, int8_t y, int8_t z, int8_t rz, int8_t rx, int8_t ry, uint8_t hat, uint32_t buttons){
+    if(hat > 9){
+        return false;
+    }
+    _x = x;
+    _y = y;
+    _z = z;
+    _rz = rz;
+    _rx = rx;
+    _ry = ry;
+    _hat = hat;
+    _buttons = buttons;
+    return write();
+}
+
+
+#endif /* CONFIG_TINYUSB_HID_ENABLED */