PICO TNC

PICO TNC is the Terminal Node Controler for Amateur Packet Radio powered by Raspberry Pi Pico. This is a fork of that project. I have removed all of the major features of the code except for the modulator/demodulator section and inserted a z80 emulator from my TNCEMU project that emulates a Heathkit HK21 Pocket Packet. Introductory Video can be seen here: https://youtu.be/zq6JLoosqGQ

PIC TNC features

• Encode and decode Bell 202 AFSK signal without modem chip
• Support USB Serial as well as 3.3v ttl serial interface
• Emulated Support of full tnc and tnc commands including pbbs
• Kiss support at the flip of a switch.
• Operates with open squelch
• TTL Serial Port is configured by emulated TNC parameters when used as a console port.

Todo

• Add 1600 1800 hz modem for HF Modem support.
• Investigate if FX.25 can be added especially for hf.

How to build

git clone https://github.com/pfiliberti/pico_tnc.git
cd pico_tnc
mkdir build
cd build
cmake ..
make -j4
(flash 'pico_tnc/pico_tnc.uf2' file to your Pico)