Android code for FM Radio Data System Scanner
Scans pre-defined FM stations for currently playing song title and artist. Communicates via a simple REST interface with a Raspberry Pi equipped with 2 FM radios. One plays the station and the other scans the dial and shows the artist and title on each station.
See https://www.hackster.io/davejaffe7/fm-radio-data-system-scanner-061f96 for Raspberry Pi code and all details on how to build