smartphone LoRa device connection - Android - USB - Arduino - LoRa

Instructions on how to make it work can be found here https://www.hackster.io/pulsartronic/smartphone-lora-connection-diy-bde258
Google Play Store: https://play.google.com/store/apps/details?id=com.pulsartronic.usbrfmapp

An open source project is a forever Work In Progress. Feel free to be constructive.

Default configuration is in:

ArduinoIDE/USBRFMApp/USBRFMApp/Defaults.h

You should change it before uploading it to your board, based on your hardware, though you can later change it through the web interface.
Values are in hexadecimal, i bet you can handle them.
The data structure is a compact object/array/binary model, i should write documentation for it and i will, the module where it is handled is called CDS, which stands for Compact Data Structure.

ArduinoIDE/USBRFMApp/libraries/CDS

The main goal is to work with a balance between

1. binary data
2. object data model, based in JSON
3. and limited RAM

There are many todo's, one example is: CAD (Channel Activity Detection) is not supported yet, if you want to implement it, it would be fantastic, if you don't know how, you can open an issue asking for implementation in the following repo: https://github.com/sandeepmistry/arduino-LoRa

An Arduino library for sending and receiving data using LoRa radios.
https://github.com/sandeepmistry/arduino-LoRa

Usb serial controller for Android
https://github.com/felHR85/UsbSerial