I purchased a new Logitech version of the [Saitek Flight Switch Panel](https://www.saitek.com/uk/prod-bak/switch.html) so that I can use it as a Streamdeck-like interface for my PC and devices on my home network.

[Once again]({{< relref "/content/dev/2022-10-16-saitek-x52.md" >}}), I've gotta map the USB HID to the various switches and knobs so you'll find below the table of values if you ever want to use one in your own projects.

## Switches

Below you'll find a table for all the bit positions that a switch can use over the three bytes of the panel. You can have a combination of them, so a value of `00000000 00000000 00000111` indicates the Master Battery, the Master Alternator, and the Avionics Master are all on. Every switch change will send three bytes representing all the current switch states.

| Byte | Bit | Function  |
| ---- | --- | --------- |
| 1    | 1   | Master Battery On |
| 1    | 2   | Master Alternator On |
| 1    | 3   | Avionics Master On |
| 1    | 4   | Fuel Pump On |
| 1    | 5   | De-Ice On |
| 1    | 6   | Pitot Heat On |
| 1    | 7   | Cowl Close |
| 1    | 8   | Light Panel On |
| 2    | 1   | Light Beacon On |
| 2    | 2   | Light Navigation On |
| 2    | 3   | Light Strobe On |
| 2    | 4   | Light Taxi On |
| 2    | 5   | Light Landing On |
| 2    | 6   | Dial Off |
| 2    | 7   | Dial Right |
| 2    | 8   | Dial Left |
| 3    | 1   | Dial Both/All |
| 3    | 2   | Dial Start |
| 3    | 3   | Landing Gear Up |
| 3    | 4   | Landing Gear Down |

## Landing Gear Lights

Thanks to the [DCSFlightPanels](https://github.com/DCSFlightpanels/DCSFlightpanels) project for this one!

You can enable and disable the landing gear lights on the PZ55 Flight Switch Panel by sending feature reports to ID 0 followed by a single byte of data. Aside from "All Off" the values below are combinatorial. So by sending `00001100` you'll turn the top light red, the right light green, and the left light off.

| Byte     | Value | Light | Status |
| -------- | ----- | ----- | ------ |
| 00000000 | 0     | All   | Off    |
| 00000001 | 1     | Up    | Green  |
| 00001000 | 8     | Up    | Red    |
| 00001001 | 9     | Up    | Yellow |
| 00000010 | 2     | Left  | Green  |
| 00010000 | 16    | Left  | Red    |
| 00010010 | 18    | Left  | Yellow |
| 00000100 | 4     | Right | Gree   |
| 00100000 | 32    | Right | Red    |
| 00100100 | 36    | Right | Yellow |