process read and write parameter request frames
add support for getting OSD parameters on read requests
send text selections over CRSF
chunker algorithm for CRSF text selections
disable functions if OSD_PARAM_ENABLED is not set
create separate parameter scheduler entry
don't enable CRSF text selection on 1mb boards
correctly calculate attitude
fix GPS alt message - expects alt in m + 1000, 0 - 5000 m - from vierfuffzig <tunella@gmx.de>
fix used battery capacity - from vierfuffzig <tunella@gmx.de>
battery and heartbeat telemetry
parse VTX packets and VTX telemetry
provide GPS, Battery, Attitude, FlightMode telemetry
issue parameter updates at scheduled rate
support setting power levels with dbm
support standalone mode
set defaults from incoming VTX packets
output configured VTX settings
Andrew Tridgell
Andy Piper