<!-- SPDX-License-Identifier: GPL-3.0-or-later -->

# HID Descriptor for 8BitDo SN30 Pro+ (Windows mode)

Hex dump of the controller descriptor:
```
# xxd -c20 -g1 /sys/module/hid_xpadneo/drivers/hid:xpadneo/0005:045E:02E0.000B/report_descriptor

05 01 09 05 a1 01 85 01 09 01 a1 00 09 30 09 31 15 00 27 ff
ff 00 00 95 02 75 10 81 02 c0 09 01 a1 00 09 33 09 34 15 00
27 ff ff 00 00 95 02 75 10 81 02 c0 05 01 09 32 15 00 26 ff
03 95 01 75 0a 81 02 15 00 25 00 75 06 95 01 81 03 05 01 09
35 15 00 26 ff 03 95 01 75 0a 81 02 15 00 25 00 75 06 95 01
81 03 05 01 09 39 15 01 25 08 35 00 46 3b 01 66 14 00 75 04
95 01 81 42 75 04 95 01 15 00 25 00 35 00 45 00 65 00 81 03
05 09 19 01 29 0a 15 00 25 01 75 01 95 0a 81 02 15 00 25 00
75 06 95 01 81 03 05 01 09 80 85 02 a1 00 09 85 15 00 25 01
95 01 75 01 81 02 15 00 25 00 75 07 95 01 81 03 c0 05 0f 09
21 85 03 a1 02 09 97 15 00 25 01 75 04 95 01 91 02 15 00 25
00 75 04 95 01 91 03 09 70 15 00 25 64 75 08 95 04 91 02 09
50 66 01 10 55 0e 15 00 26 ff 00 75 08 95 01 91 02 09 a7 15
00 26 ff 00 75 08 95 01 91 02 65 00 55 00 09 7c 15 00 26 ff
00 75 08 95 01 91 02 c0 85 04 05 06 09 20 15 00 26 ff 00 75
08 95 01 81 02 c0 00
```

Parsed descriptor:
(via https://eleccelerator.com/usbdescreqparser/)
```
0x05, 0x01,        // Usage Page (Generic Desktop Ctrls)
0x09, 0x05,        // Usage (Game Pad)
0xA1, 0x01,        // Collection (Application)
0x85, 0x01,        //   Report ID (1)
0x09, 0x01,        //   Usage (Pointer)
0xA1, 0x00,        //   Collection (Physical)
0x09, 0x30,        //     Usage (X)
0x09, 0x31,        //     Usage (Y)
0x15, 0x00,        //     Logical Minimum (0)
0x27, 0xFF, 0xFF, 0x00, 0x00,  //     Logical Maximum (65534)
0x95, 0x02,        //     Report Count (2)
0x75, 0x10,        //     Report Size (16)
0x81, 0x02,        //     Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
0xC0,              //   End Collection
0x09, 0x01,        //   Usage (Pointer)
0xA1, 0x00,        //   Collection (Physical)
0x09, 0x33,        //     Usage (Rx)
0x09, 0x34,        //     Usage (Ry)
0x15, 0x00,        //     Logical Minimum (0)
0x27, 0xFF, 0xFF, 0x00, 0x00,  //     Logical Maximum (65534)
0x95, 0x02,        //     Report Count (2)
0x75, 0x10,        //     Report Size (16)
0x81, 0x02,        //     Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
0xC0,              //   End Collection
0x05, 0x01,        //   Usage Page (Generic Desktop Ctrls)
0x09, 0x32,        //   Usage (Z)
0x15, 0x00,        //   Logical Minimum (0)
0x26, 0xFF, 0x03,  //   Logical Maximum (1023)
0x95, 0x01,        //   Report Count (1)
0x75, 0x0A,        //   Report Size (10)
0x81, 0x02,        //   Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
0x15, 0x00,        //   Logical Minimum (0)
0x25, 0x00,        //   Logical Maximum (0)
0x75, 0x06,        //   Report Size (6)
0x95, 0x01,        //   Report Count (1)
0x81, 0x03,        //   Input (Const,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
0x05, 0x01,        //   Usage Page (Generic Desktop Ctrls)
0x09, 0x35,        //   Usage (Rz)
0x15, 0x00,        //   Logical Minimum (0)
0x26, 0xFF, 0x03,  //   Logical Maximum (1023)
0x95, 0x01,        //   Report Count (1)
0x75, 0x0A,        //   Report Size (10)
0x81, 0x02,        //   Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
0x15, 0x00,        //   Logical Minimum (0)
0x25, 0x00,        //   Logical Maximum (0)
0x75, 0x06,        //   Report Size (6)
0x95, 0x01,        //   Report Count (1)
0x81, 0x03,        //   Input (Const,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
0x05, 0x01,        //   Usage Page (Generic Desktop Ctrls)
0x09, 0x39,        //   Usage (Hat switch)
0x15, 0x01,        //   Logical Minimum (1)
0x25, 0x08,        //   Logical Maximum (8)
0x35, 0x00,        //   Physical Minimum (0)
0x46, 0x3B, 0x01,  //   Physical Maximum (315)
0x66, 0x14, 0x00,  //   Unit (System: English Rotation, Length: Centimeter)
0x75, 0x04,        //   Report Size (4)
0x95, 0x01,        //   Report Count (1)
0x81, 0x42,        //   Input (Data,Var,Abs,No Wrap,Linear,Preferred State,Null State)
0x75, 0x04,        //   Report Size (4)
0x95, 0x01,        //   Report Count (1)
0x15, 0x00,        //   Logical Minimum (0)
0x25, 0x00,        //   Logical Maximum (0)
0x35, 0x00,        //   Physical Minimum (0)
0x45, 0x00,        //   Physical Maximum (0)
0x65, 0x00,        //   Unit (None)
0x81, 0x03,        //   Input (Const,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
0x05, 0x09,        //   Usage Page (Button)
0x19, 0x01,        //   Usage Minimum (0x01)
0x29, 0x0A,        //   Usage Maximum (0x0A)
0x15, 0x00,        //   Logical Minimum (0)
0x25, 0x01,        //   Logical Maximum (1)
0x75, 0x01,        //   Report Size (1)
0x95, 0x0A,        //   Report Count (10)
0x81, 0x02,        //   Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
0x15, 0x00,        //   Logical Minimum (0)
0x25, 0x00,        //   Logical Maximum (0)
0x75, 0x06,        //   Report Size (6)
0x95, 0x01,        //   Report Count (1)
0x81, 0x03,        //   Input (Const,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
0x05, 0x01,        //   Usage Page (Generic Desktop Ctrls)
0x09, 0x80,        //   Usage (Sys Control)
0x85, 0x02,        //   Report ID (2)
0xA1, 0x00,        //   Collection (Physical)
0x09, 0x85,        //     Usage (Sys Main Menu)
0x15, 0x00,        //     Logical Minimum (0)
0x25, 0x01,        //     Logical Maximum (1)
0x95, 0x01,        //     Report Count (1)
0x75, 0x01,        //     Report Size (1)
0x81, 0x02,        //     Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
0x15, 0x00,        //     Logical Minimum (0)
0x25, 0x00,        //     Logical Maximum (0)
0x75, 0x07,        //     Report Size (7)
0x95, 0x01,        //     Report Count (1)
0x81, 0x03,        //     Input (Const,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
0xC0,              //   End Collection
0x05, 0x0F,        //   Usage Page (PID Page)
0x09, 0x21,        //   Usage (0x21)
0x85, 0x03,        //   Report ID (3)
0xA1, 0x02,        //   Collection (Logical)
0x09, 0x97,        //     Usage (0x97)
0x15, 0x00,        //     Logical Minimum (0)
0x25, 0x01,        //     Logical Maximum (1)
0x75, 0x04,        //     Report Size (4)
0x95, 0x01,        //     Report Count (1)
0x91, 0x02,        //     Output (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position,Non-volatile)
0x15, 0x00,        //     Logical Minimum (0)
0x25, 0x00,        //     Logical Maximum (0)
0x75, 0x04,        //     Report Size (4)
0x95, 0x01,        //     Report Count (1)
0x91, 0x03,        //     Output (Const,Var,Abs,No Wrap,Linear,Preferred State,No Null Position,Non-volatile)
0x09, 0x70,        //     Usage (0x70)
0x15, 0x00,        //     Logical Minimum (0)
0x25, 0x64,        //     Logical Maximum (100)
0x75, 0x08,        //     Report Size (8)
0x95, 0x04,        //     Report Count (4)
0x91, 0x02,        //     Output (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position,Non-volatile)
0x09, 0x50,        //     Usage (0x50)
0x66, 0x01, 0x10,  //     Unit (System: SI Linear, Time: Seconds)
0x55, 0x0E,        //     Unit Exponent (-2)
0x15, 0x00,        //     Logical Minimum (0)
0x26, 0xFF, 0x00,  //     Logical Maximum (255)
0x75, 0x08,        //     Report Size (8)
0x95, 0x01,        //     Report Count (1)
0x91, 0x02,        //     Output (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position,Non-volatile)
0x09, 0xA7,        //     Usage (0xA7)
0x15, 0x00,        //     Logical Minimum (0)
0x26, 0xFF, 0x00,  //     Logical Maximum (255)
0x75, 0x08,        //     Report Size (8)
0x95, 0x01,        //     Report Count (1)
0x91, 0x02,        //     Output (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position,Non-volatile)
0x65, 0x00,        //     Unit (None)
0x55, 0x00,        //     Unit Exponent (0)
0x09, 0x7C,        //     Usage (0x7C)
0x15, 0x00,        //     Logical Minimum (0)
0x26, 0xFF, 0x00,  //     Logical Maximum (255)
0x75, 0x08,        //     Report Size (8)
0x95, 0x01,        //     Report Count (1)
0x91, 0x02,        //     Output (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position,Non-volatile)
0xC0,              //   End Collection
0x85, 0x04,        //   Report ID (4)
0x05, 0x06,        //   Usage Page (Generic Dev Ctrls)
0x09, 0x20,        //   Usage (Battery Strength)
0x15, 0x00,        //   Logical Minimum (0)
0x26, 0xFF, 0x00,  //   Logical Maximum (255)
0x75, 0x08,        //   Report Size (8)
0x95, 0x01,        //   Report Count (1)
0x81, 0x02,        //   Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
0xC0,              // End Collection
0x00,              // Unknown (bTag: 0x00, bType: 0x00)

// 307 bytes

// best guess: USB HID Report Descriptor
```

Converted to tables of report IDs:
```
TBD
```

Button bitmap (extracted from `btmon`):
```
ID -- -- -- -- -- -- -- -- -- -- -- -- Buttons
01 00 80 00 80 00 80 00 80 00 00 00 00 00 01 00 - B 0000 0001 = 90001
01 00 80 00 80 00 80 00 80 00 00 00 00 00 00 00 - B 0000 0001
01 00 80 00 80 00 80 00 80 00 00 00 00 00 02 00 - A 0000 0010 = 90002
01 00 80 00 80 00 80 00 80 00 00 00 00 00 00 00 - A 0000 0010
01 00 80 00 80 00 80 00 80 00 00 00 00 00 04 00 - Y 0000 0100 = 90003
01 00 80 00 80 00 80 00 80 00 00 00 00 00 00 00 - Y 0000 0100
01 00 80 00 80 00 80 00 80 00 00 00 00 00 08 00 - X 0000 1000 = 90004
01 00 80 00 80 00 80 00 80 00 00 00 00 00 00 00 - X 0000 1000
01 00 80 00 80 00 80 00 80 00 00 00 00 00 10 00 - L 0001 0000 = 90005 (shoulder)
01 00 80 00 80 00 80 00 80 00 00 00 00 00 00 00 - L 0001 0000
01 00 80 00 80 00 80 00 80 00 00 00 00 00 20 00 - R 0010 0000 = 90006 (shoulder)
01 00 80 00 80 00 80 00 80 00 00 00 00 00 00 00 - R 0010 0000
```
