DMRBridgeMQTT

Send predefined audio files on a DMR Network using MQTT

Getting started

This script is intended to be used with DMRBridgeWAV (https://github.com/jess-sys/DMRBridgeWAV).

Node v14.8.0 and Yarn 1.22.10 are preferred.

Install dependencies

$ yarn

Edit configuration file

Change the following variables to suit your needs.

{
  "mqtt": {
    "serverAddress": "172.30.42.120",
    "serverPort": 1883,
    "messageTopic": "DMR/radio0/message",
    "controlTopic": "DMR/radio0/control"
  },
  "log": {
    "mode": "console"
  },
  "soundFilesPath": "/opt/DMRBridgeMQTT/sounds",
  "DMRBridgeWAVPath": "/opt/DMRBridgeWAV"
}

Install systemd service (optional)

$ yarn install_service

Usage

As a systemd service

$ systemctl DMRBridgeMQTT enable --now

As a standalone software

$ yarn start

How it works

The specified messageTopic topic will be monitored. When a new message is received, A filename with the payload suffixed with ".wav" will be constructed. It will then try to load the file with this filename from the soundFilesPath directory.

The filename should be lowercase, all non-alphanumeric characters are forbidden. Spaces will be replaced by dashes.

If the file cannot be loaded, then it'll try to create it using gtts (https://github.com/pndurette/gTTS). It will then store it under the previously defined format name. If the message can't be created, a message will be sent on the controlTopic topic.

Todo

• TLS support for MQTT
• Control topic errors
• pm2 daemon manager support

Useless stuff (copyright)

Copyright (C) 2020 Jessy SOBREIRO

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.