# Bus- und Bahn-Anzeige (bus and train display)

This is the code to send information to the station display that is hanging in the hallway of CCCHH.

## Documentation

The [docs](./docs) directory contains a number of documents about the device, all in German.

## Character Set

The display uses [Code Page 437](https://en.wikipedia.org/wiki/Code_page_437), with a few exceptions. Due to the limited
resolution of the segments, the display can deviate significantly.

| Code | CP437        | Geavision Spaltenschrift |
|------|--------------|--------------------------|
| 0xb4 | ┤ u2524      | Vehicle end left         |
| 0xb5 | ╡ u2561      | Vehicle end right        |
| 0xb6 | ╢ u2562      | Track                    |
| 0xff |   u00a0 | Three full segments      |

In other displays, the vehicle ends can be used together with other special characters to show carriage information;
this set seems to be missing those extra characters.