chuniio-tasoller with air tower LEDs

chuniio driver for tasoller custom 2.0 firmware now with working air tower LEDs when using Dniel97 segatools
this currently only works with the chuniio branch of segatools, but may work on the main branch in the future

thanks to:

• akiroz for the original code and USB Protocol information
• Dniel97 for rewritting my failed attempts at making this work

the current implementation may not be fully arcade accurate, but should be visually acceptable during gameplay
this should hopefully be addressed in the future

Supported titles:

• Chunithm
• Chunithm NEW
• Chunithm NEW PLUS
• Chunithm SUN
• Chunithm SUN PLUS

Configuration

segatools.ini

[chuniio]
;; For Chunithm
;path=chuniio_tasoller.dll
;; For Chunithm NEW or newer
path32=chuniio_tasoller.dll
path64=chuniio_tasoller_x64.dll

;; Uncomment for Chunithm NEW or newer
chusan=1

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

USB Protocol

Custom firmware USB device: 1CCF:2333

• Interface 1
  • Endpoint 4 IN Interrupt (0x84)
    • data len: 36 bytes
    • data[0-2]: {0x68, 0x66, 0x84} (magic?)
    • data[3]
      • bit 0-5: beam 1-6 (1 = blocked)
      • bit 6-7: fn1 & fn2 (1 = pressed)
    • data[4-35]: touch sensor 1-32 pressure
  • Endpoint 3 OUT Bulk (0x03)
    • data len: 240 bytes
    • data[0-2]: {0x42, 0x4C, 0x00} (magic?)
    • data[3-95]: Slider LED (GRB order, right->left)
    • data[96-167]: Left LED (GRB order top->bottom)
    • data[168-239]: Right LED (GRB order bottom->top)

Build

$ git clone ...
$ git submodule update --init
$ zig build -Doptimize=ReleaseSafe
$ ls zig-out/lib/chuniio_tasoller.dll