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Dipex

Dipole Antenna Elixir Project! 📻

Purpose

  • Listen to a Flex Radio TCP stream
  • Parse VITA49
  • Based on antenna/frequency turn on/off relay switch via Raspberry Pi GPIO
  • Relay switch dictate dipole mode on antenna

This is for my Dad 🙏

We are both HAM radio operators 🎉

On Boot (init)

ENV vars

  1. FLEX_IP known IP address of the Flex Radio
  2. FLEX_RPI if the server is running on a RPI with GPIO
  • You do not need to define the FLEX_RPI var but you can set it to 0 or 1.
  • 1 being that GPIO is on the system and the wiringPi gpio CLI is available for use.
  • 0 means no, and not defining it means no as well.

Example use on a rpi:

FLEX_IP=10.0.0.192 FLEX_RPI=1 mix run --no-halt

GPIO

  • Unexports all pins
  • Exports mode out for BCM pin 17

TCP

  • Opens TCP :gen_tcp connection to flex
  • Send a recieve all msg to flex with :gen_tcp (need to CLRF msg string)
  • Recursive loop recv with :gen_tcp

Parsing

  • Parses recv msg to check for antenna and frequencies
  • Based on antenna/frequency turn on/off relay switch via Raspberry Pi GPIO

Forever!

API

If running on 10.0.0.230

curl 10.230:4000/api/?cmd=on
curl 10.230:4000/api/?cmd=off
curl 10.230:4000/api/?cmd=unexport
curl 10.230:4000/api/?cmd=export