comgram/pycom_mesh

Some basic code examples of the Pycom's proprietary LoRa Mesh network.

Pymesh micropython code

This repository cointains examples of the use of Pycom's proprietary LoRa Mesh network (Pymesh).

• Official Pymesh docs
• Forum Pymesh announcements

The code included in this repository was created and tested using a Lopy4, using the firmware release [1.20.0.rc11].

Mesh basics

The Pymesh LoRa Mesh is implemented using OpenThread. To understand the OpenThread terms and overall functionality, these guides are highly recommended:

• What is Thread?
• Node Roles and Types
• IPv6 Addressing (especially, RLOC unicast address)

A simple CLI:

File: "meshcli.py"

This extremely simple program allows to manually test the OpenThread CLI. A good starting point is this Google codelabs example.

Notes:

• 'panid' cannot be changed. It is fixed to '1234'
• no need for ifconfig up and thread start

A simple mesh:

File: "simplemesh.py"

A two nodes mesh. Execute the code in two different LoPys. The node will start building the mesh. Once nodes see each other start, they print the neighbours table and stop.

A Lora mesh example:

Folder: "loramesh"; execute file themain.py

Creates a mesh, and when done every node sends a PING and UDP packets to all neighbors. Based on this https://docs.pycom.io/tutorials/lora/lora-mesh.html