在ESP32S3使用 Adafruit_TinyUSB 建立 HID 裝置進行讀寫

Adafruit_USBD_HID usb_hid;

#define USB_VID 0xCafe
#define USB_PID 0x4011
#define USB_MANUFACTURER "ESP32S3"
#define USB_PRODUCT "ESP32 HID"

#define HID_REPORT_SIZE 64

static const uint8_t hid_report_descriptor[] = {
  0x06, 0x00, 0xFF,        // Usage Page (Vendor)
  0x09, 0x01,              // Usage
  0xA1, 0x01,              // Collection (Application)

  0x09, 0x02,
  0x15, 0x00,
  0x26, 0xFF, 0x00,
  0x75, 0x08,
  0x95, HID_REPORT_SIZE,
  0x81, 0x02,              // Input

  0x09, 0x03,
  0x15, 0x00,
  0x26, 0xFF, 0x00,
  0x75, 0x08,
  0x95, HID_REPORT_SIZE,
  0x91, 0x02,              // Output

  0xC0
};

uint8_t hid_rx_buffer[HID_REPORT_SIZE];
uint8_t hid_tx_buffer[HID_REPORT_SIZE];

// PC → ESP32
void hid_set_report_cb(uint8_t report_id,
                       hid_report_type_t report_type,
                       uint8_t const* buffer,
                       uint16_t bufsize)
{
 
  memcpy(hid_rx_buffer, buffer, bufsize);

  Serial.print("RX: ");
  Serial.print(bufsize);
  Serial.print("  ");
  
  for(int ii=0;ii

在setup 中的設定

  // 初始化 HID
  TinyUSBDevice.setID(USB_VID, USB_PID);
  TinyUSBDevice.setManufacturerDescriptor("MattLab");
  TinyUSBDevice.setProductDescriptor("ESP32S3 MSC+HID");

  // ---------- HID ----------
  usb_hid.setReportDescriptor(hid_report_descriptor, sizeof(hid_report_descriptor));
  usb_hid.setPollInterval(2);
  usb_hid.setReportCallback(NULL, hid_set_report_cb);
  usb_hid.begin();

ESP32 → PC 將資料存放於 hid_tx_buffer 陣列中再送出

memset(hid_tx_buffer, 0, HID_REPORT_SIZE);
usb_hid.sendReport(0, hid_tx_buffer, HID_REPORT_SIZE);