The center light bar is a standalone unit, featuring its own microprocessor to control the lights. It receives communicates via TTL level RS-232, at 115200 baud, 8 data bits, 1 stop bit, no parity, and no flow control. No line endings are required.
For the purpose of this README, I'll use the following abbreviations:
| Abbreviation | Item |
|---|---|
| MB | Motherboard |
| LB | Light Bar |
Bytes will be written as hex, followed by the ASCII equivalent in parenthesis, if relevant. Example: 0x5A ('Z').
At startup, the LB spams 0xF0. Once the MB replies with 0xA5, the LB will respond with 0x5A to acknowledge the initialization.
It is possible to set the Hue (H), Saturation (S), or Brightness (B) of the LB using the following commands:
| Command | Action |
|---|---|
0x91 |
Reduce Hue |
0x81 |
Increase Hue |
0x92 |
Reduce Saturation |
0x82 |
Increase Saturation |
0x93 |
Reduce Brightness |
0x83 |
Increase Brightness |
The LB has 9 possible commands to change the number of LEDs lit up.
| Command | Action |
|---|---|
0x4C |
LEDs Off |
0x68 |
Center 2 LEDs On |
0x69 |
Center 4 LEDs On |
0x6A |
Center 6 LEDs On |
0x6B |
Center 8 LEDs On |
0x6C |
Center 10 LEDs On |
0x6D |
Center 12 LEDs On |
0x6E |
Center 14 LEDs On |
0x6F |
Center 16 LEDs On |