Playground for the SA8x8 OpenRTX FW APRS TNC based on T-TWR Plus 2 https://github.com/OpenRTX/sa8x8-fw Use PlatformIO to build and upload the firmware. TODO: Basic structure for ESP32 and PIO BLE TNC Radio init FM@25kHz 144.800 AX.25 to AFSK modulation TX Queue TX Beaconing RX Task with APRS decoding