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/USBHID.h

@@ -0,0 +1,79 @@
+// 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.
+
+#pragma once
+#include <stdint.h>
+#include <stdbool.h>
+#include "sdkconfig.h"
+
+#if CONFIG_TINYUSB_HID_ENABLED
+#include "esp_event.h"
+#include "class/hid/hid.h"
+#include "class/hid/hid_device.h"
+
+// Used by the included TinyUSB drivers
+enum {
+    HID_REPORT_ID_NONE,
+    HID_REPORT_ID_KEYBOARD,
+    HID_REPORT_ID_MOUSE,
+    HID_REPORT_ID_GAMEPAD,
+    HID_REPORT_ID_CONSUMER_CONTROL,
+    HID_REPORT_ID_SYSTEM_CONTROL,
+    HID_REPORT_ID_VENDOR
+};
+
+ESP_EVENT_DECLARE_BASE(ARDUINO_USB_HID_EVENTS);
+
+typedef enum {
+    ARDUINO_USB_HID_ANY_EVENT = ESP_EVENT_ANY_ID,
+    ARDUINO_USB_HID_SET_PROTOCOL_EVENT = 0,
+    ARDUINO_USB_HID_SET_IDLE_EVENT,
+    ARDUINO_USB_HID_MAX_EVENT,
+} arduino_usb_hid_event_t;
+
+typedef struct {
+    uint8_t instance;
+    union {
+        struct {
+                uint8_t protocol;
+        } set_protocol;
+        struct {
+                uint8_t idle_rate;
+        } set_idle;
+    };
+} arduino_usb_hid_event_data_t;
+
+class USBHIDDevice
+{
+public:
+    virtual uint16_t _onGetDescriptor(uint8_t* buffer){return 0;}
+    virtual uint16_t _onGetFeature(uint8_t report_id, uint8_t* buffer, uint16_t len){return 0;}
+    virtual void _onSetFeature(uint8_t report_id, const uint8_t* buffer, uint16_t len){}
+    virtual void _onOutput(uint8_t report_id, const uint8_t* buffer, uint16_t len){}
+};
+
+class USBHID
+{
+public:
+    USBHID(void);
+    void begin(void);
+    void end(void);
+    bool ready(void);
+    bool SendReport(uint8_t report_id, const void* data, size_t len, uint32_t timeout_ms = 100);
+    void onEvent(esp_event_handler_t callback);
+    void onEvent(arduino_usb_hid_event_t event, esp_event_handler_t callback);
+    static bool addDevice(USBHIDDevice * device, uint16_t descriptor_len);
+};
+
+#endif /* CONFIG_TINYUSB_HID_ENABLED */