ProGate Firmware Specification
ProGate firmware is using ALSA and GPIO to interact with H/W.
|ALSA||Audio out||Send to speaker|
|ALSA||Audio in||Receive from MIC|
|GPIO #0||PTT Out||When PTT locked by server system, GPIO is High.|
|GPIO #10||Power LED on||When ProGate is started, GPIO is High.|
|GPIO #7||Act LED on||When ProGate is initialized, GPIO is High.|
|GPIO #14||Joind to channel LED on||When ProGate is joined to channel, GPIO is High.|