This is the source code of the MMDVM firmware that supports the D-Star, DMR, System Fusion, P25, NXDN, POCSAG, and FM modes.
It can be used with the SXceiver Pi hat or similar running on a Raspberry Pi, the Pluto SDR, or the Lime SDR. All of the development work is done on a Pi 4 with an SXceiver Pi hat as there are reports of incompatibilities with the Pi 5. It uses the SoapySDR interface that can be found at https://sxceiver.com/
It connects to the MMDVM Host via a UDP link. The corresponding entries at the host end are:
[Modem]
Protocol=udp
ModemAddress=127.0.0.1
ModemPort=3334
LocalAddress=127.0.0.1
LocalPort=3335
This software is licenced under the GPL v2 and is primarily intended for amateur and educational use.