// Generic Gamepad HID descriptor
const uint8_t openjoypad_hid_report_descriptor[] = {
    0x05, 0x01,        // Usage Page (Generic Desktop Ctrls)

    0x09, 0x05,        // Usage (Game Pad)
    0xA1, 0x01,        // Collection (Application)
        0xA1, 0x01,         // Collection (Application)
            0x85, 0x01,        //   Report ID (1)

            0x05, 0x09,        //   Usage Page (Button)
            0x15, 0x00,        //   Logical Minimum (0)
            0x25, 0x01,        //   Logical Maximum (1)
            0x35, 0x00,        //   Physical Minimum (0)
            0x45, 0x01,        //   Physical Maximum (1)
            0x75, 0x01,        //   Report Size (1)
            0x95, 0x0E,        //   Report Count (14)
            0x19, 0x01,        //   Usage Minimum (0x01)
            0x29, 0x0E,        //   Usage Maximum (0x0E)
            0x81, 0x02,        //   Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
            
            0x95, 0x02,        //   Report Count (2)
            0x81, 0x01,        //   Input (Const,Array,Abs,No Wrap,Linear,Preferred State,No Null Position)

            0x05, 0x01,        //   Usage Page (Generic Desktop Ctrls)
            0x25, 0x07,        //   Logical Maximum (7)
            0x46, 0x3B, 0x01,  //   Physical Maximum (315)
            0x75, 0x04,        //   Report Size (4)
            0x95, 0x01,        //   Report Count (1)
            0x65, 0x14,        //   Unit (System: English Rotation, Length: Centimeter)
            0x09, 0x39,        //   Usage (Hat switch)
            0x81, 0x42,        //   Input (Data,Var,Abs,No Wrap,Linear,Preferred State,Null State)
            0x65, 0x00,        //   Unit (None)
            0x95, 0x01,        //   Report Count (1)
            0x81, 0x01,        //   Input (Const,Array,Abs,No Wrap,Linear,Preferred State,No Null Position)

            0x26, 0xFF, 0x00,  //   Logical Maximum (255)
            0x46, 0xFF, 0x00,  //   Physical Maximum (255)
            0x09, 0x30,        //   Usage (X)
            0x09, 0x31,        //   Usage (Y)
            0x09, 0x32,        //   Usage (Z)
            0x09, 0x35,        //   Usage (Rz)
            0x09, 0x33,        //   Usage (axis)
            0x09, 0x34,         // Usage (axis)

            0x75, 0x08,        //   Report Size (8)
            0x95, 0x06,        //   Report Count (6)
            0x81, 0x02,        //   Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)

        0xc0,

        // This implements the INPUT report for configuration requests
        0xA1, 0x01,         // Collection (Application)
            0x06, 0x00, 0xFF,      //            USAGE_PAGE (Vendor Defined Page 1) 
            0x09, 0x01,            //            USAGE (Vendor Usage 1) 
            0x85, 0x02,            //           Report ID (2)
            0x15, 0x00,            //            LOGICAL_MINIMUM (0) 
            0x26, 0xff, 0x00,       //            LOGICAL_MAXIMUM (255) 
            0x75, 0x08,            //            REPORT_SIZE (8) 
            0x95, 0x08,            //            REPORT_COUNT (8) 
            0x81, 0x02,        //   Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
        0xc0,

        // This impelements the OUTPUT report for configuration responses
        0xA1, 0x01,         // Collection (Application)
            0x06, 0x00, 0xFF,      //            USAGE_PAGE (Vendor Defined Page 1) 
            0x09, 0x01,            //            USAGE (Vendor Usage 1) 
            0x85, 0x02,            //           Report ID (2)
            0x15, 0x00,            //            LOGICAL_MINIMUM (0) 
            0x26, 0xff, 0x00,       //            LOGICAL_MAXIMUM (255) 
            0x75, 0x08,            //            REPORT_SIZE (8) 
            0x95, 0x08,            //            REPORT_COUNT (8) 
            0x91, 0x02,            //            OUTPUT (Data,Var,Abs)
        0xc0,
    // 125 bytes
    0xC0
};