# chuniio-yubideck
ChuniIO driver for YubiDeck FW 3.0.

Thanks to:
- [hlcm0](https://github.com/hlcm0/yubideck-io-firmware/blob/main/code/pico_yubideck_emu/report.h) and [4yn](https://github.com/4yn/slidershim/blob/main/src-slider_io/src/device/hid.rs#L257) 
for YubiDeck protocol information
- one_3 for testing

## Configuration
segatools.ini

```ini
[chuniio]
;; For Chunithm NEW or newer
path32=chuniio_yubideck_chusan.dll
path64=chuniio_yubideck_amdaemon.dll

;; For CHUNITHM PARADISE and older
path=chuniio_yubideck.dll

[io3]
test=0x31
service=0x32
coin=0x33
```

## USB Protocol
USB device: `1973:2001`, interface 0

- Endpoint IN Interrupt (0x81)
  - Data length: 45 bytes
  - `data[0]`: bits 0-5: beam {2, 1, 4, 3, 6, 5}
  - `data[1]`: bits 0-2 for the 3 buttons (1 = pressed)
  - `data[2..34]`: pressure of touch sensor 1-32 (counting from top -> bottom, left -> right)
  - `data[34]`: Card type
    - 0: No card
    - 1: MIFARE Classic
    - 2: FeliCa
  - `data[35..45]`: Card IDm/Access Code

- Endpoint OUT Interrupt (0x02)
  - Data length: 61 bytes
  - `data[0]`: Packet type
    - Packet type 1:
      - `data[1..61]`: Slider LED for the first 20 sensors, GBR
    - Packet type 2:
      - `data[1..34]`: Slider LED for the last 11 sensors, GBR
      - `data[34..37]`: Left air LED, RGB
      - `data[37..40]`: Right air LED, RGB
      - `data[40..43]`: Card reader LED, RGB
      - `data[43..61]`: Empty padding

## Build instructions
```shell
# For CHUNITHM NEW
cargo build --features chusan --target i686-pc-windows-msvc --release
cargo build --features chusan --target x86_64-pc-windows-msvc --release
cp target/i686-pc-windows-msvc/release/chuniio_yubideck.dll chuniio_yubideck_chusan.dll
cp target/x86_64-pc-windows-msvc/release/chuniio_yubideck.dll chuniio_yubideck_amdaemon.dll

# For CHUNITHM
cargo build --target i686-pc-windows-msvc --release
cp target/i686-pc-windows-msvc/release/chuniio_yubideck.dll .
```