The display of the FIS display is sent in hexadecimal numbers. So you should so for example when displaying Kodi Kodi's content content (standard in text / ASCII) convert to hexadecimal code, before taking this to send to the FIS about the Canbus.

However, the ASCII table that Audi has something more limited than the official ASCII table. Especially the little letters "a" to "o" are in a different position than regular. When you want to display these characters on the FIS, you will need to adjust the position of the ASCII character.

The ASCII table used by Audi:

[whohit]Audi ASCII Table[/whohit]