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# Corsair Commander Pro and Lighting Node Pro protocol
### Compatible devices
| Device Name | USB ID | LED channels | Fan channels |
| ----------- | ------ | ------------ | ------------ |
| Commander Pro | `1B1C:0C10` | 2 | 6 |
| Lighting Node Pro | `1B1C:0C0B` | 2 | 0 |
### Command formats
Host -> Device: 16 bytes
Device -> Host: 64 bytes
## Get Information commands
### Get Firmware version - `0x02`
Response:
| Byte index | Description |
| ---------- | ----------- |
| 0x00 | 0x00 |
| 0x01 | X |
| 0x02 | Y |
| 0x03 | Z |
Firmware version is `X.Y.Z`
### Get Bootloader version - `0x06`
Response:
| Byte index | Description |
| ---------- | ----------- |
| 0x00 | 0x00 |
| 0x01 | X |
| 0x02 | Y |
Bootloader version is `X.Y`
### Get temperature sensor configuration - `0x10`
Response:
| Byte index | Description |
| ---------- | ----------- |
| 0x00 | 0x00 |
| 0x01 | `0x01` temp sensor 1 connected, otherwise `0x00` |
| 0x02 | `0x01` temp sensor 2 connected, otherwise `0x00` |
| 0x03 | `0x01` temp sensor 3 connected, otherwise `0x00` |
| 0x04 | `0x01` temp sensor 4 connected, otherwise `0x00` |
### Get temperature value - `0x11`
Request:
| Byte index | Description |
| ---------- | ----------- |
| 0x00 | 0x11 |
| 0x01 | temp sensor number (0x00 - 0x03) |
Response:
| Byte index | Description |
| ---------- | ----------- |
| 0x00 | 0x00 |
| 0x01 | temp MSB |
| 0x02 | temp LSB |
Divide the temperature value by 100 to get the value is degrees celsius.
### Get bus voltage value - `0x12`
Request:
| Byte index | Description |
| ---------- | ----------- |
| 0x00 | 0x12 |
| 0x01 | rail number (0x00 - 0x02) |
rail 0 = 12v
rail 1 = 5v
rail 2 = 3.3v
Response:
| Byte index | Description |
| ---------- | ----------- |
| 0x00 | 0x00 |
| 0x01 | voltage MSB |
| 0x02 | voltage LSB |
Divide the value by 1000 to get the actual voltage.
### Get fan configuration - `0x20`
Response:
| Byte index | Description |
| ---------- | ----------- |
| 0x00 | 0x00 |
| 0x01 | Fan 1 mode |
| 0x02 | Fan 2 mode |
| 0x03 | Fan 3 mode |
| 0x04 | Fan 4 mode |
| 0x05 | Fan 5 mode |
| 0x06 | Fan 6 mode |
Fan modes:
| Fan Mode | Value |
| ------------ | ----- |
| Disconnected | 0x00 |
| DC (3 pin) | 0x01 |
| PWM (4 pin) | 0x02 |
### Get fan RPM value - `0x21`
Request:
| Byte index | Description |
| ---------- | ----------- |
| 0x00 | 0x21 |
| 0x01 | fan number (0x00 - 0x05) |
Response:
| Byte index | Description |
| ---------- | ----------- |
| 0x00 | 0x00 |
| 0x01 | rpm MSB |
| 0x02 | rpm LSB |
## Set commands
### Set fixed % - `0x23`
Request:
| Byte index | Description |
| ---------- | ----------- |
| 0x00 | 0x23 |
| 0x01 | fan number (0x00 - 0x05) |
| 0x02 | percentage |
### Set fan curve % - `0x25`
Request:
| Byte index | Description |
| ---------- | ----------- |
| 0x00 | 0x25 |
| 0x01 | fan number (0x00 - 0x05) |
| 0x02 | temp sensor to use (0x00 - 0x03) 0xFF to use external sensor |
| 0x03, 0x04 | temp point 1 MSB |
| 0x05, 0x06 | temp point 2 MSB |
| 0x07, 0x08 | temp point 3 MSB |
| 0x09, 0x0A | temp point 4 MSB |
| 0x0B, 0x0C | temp point 5 MSB |
| 0x0D, 0x0E | temp point 6 MSB |
| 0x0F, 0x10 | rpm point 1 MSB |
| 0x11, 0x12 | rpm point 2 MSB |
| 0x13, 0x14 | rpm point 3 MSB |
| 0x15, 0x16 | rpm point 4 MSB |
| 0x17, 0x18 | rpm point 5 MSB |
| 0x19, 0x1A | rpm point 6 MSB |
### Hardware LED commands
- Send reset channel
- send start LED effect
- set channel to hardware mode
- send effect (one or more messages)
- send commit
### Reset channel - `0x37`
Request:
| Byte index | Description |
| ---------- | ----------- |
| 0x00 | 0x37 |
| 0x01 | channel number (0x00 or 0x01) |
### Start channel LED effect - `0x34`
Request:
| Byte index | Description |
| ---------- | ----------- |
| 0x00 | 0x34 |
| 0x01 | channel number (0x00 or 0x01) |
### Set channel state - `0x38`
Request:
| Byte index | Description |
| ---------- | ----------- |
| 0x00 | 0x38 |
| 0x01 | channel number (0x00 or 0x01) |
| 0x02 | 0x01 hardware control, 0x02 software control |
### Set LED effect - `0x35`
Request:
| Byte index | Description |
| ---------- | ----------- |
| 0x00 | 0x35 |
| 0x01 | channel number (0x00 or 0x01) |
| 0x02 | start LED number |
| 0x03 | number of LEDs |
| 0x04 | mode |
| 0x05 | speed |
| 0x06 | direction |
| 0x07 | random colors |
| 0x08 | 0xFF |
| mode | value | Num Colors |
| ---- | ----- | --------- |
| rainbow | `0x00` | 0 |
| color_shift | `0x01` | 2 |
| color_pulse | `0x02` | 2 |
| color_wave | `0x03` | 2 |
| fixed | `0x04` | 1 |
| visor | `0x06` | 2 |
| marquee | `0x07` | 1 |
| blink | `0x08` | 2 |
| sequential | `0x09` | 1 |
| rainbow2 | `0x0A` | 0 |
| speed | value |
| ----- | ----- |
| slow | `0x02` |
| medium | `0x01` |
| fast | `0x00` |
| direction | value |
| ----- | ----- |
| forward | `0x01` |
| backward | `0x00` |
### Commit hardware settings - `0x33`
Request:
| Byte index | Description |
| ---------- | ----------- |
| 0x00 | 0x33 |
| 0x01 | 0xFF |
|
