IOT Gateway firmware

This project implements an Iot gateway firmware to run on PHI Innovations's IoT gateway hardware.

This is a PHI Gateway firmware done in C++ running on Nuttx.

These are the main aspects of this project.

• Use Nuttx as a library (nuttx-export-10.0.1)
• Use Cmake as build engine
• Has automation to load firmware on the board using Segger J-Link

The purpose of this project is to use C++ on a larger embedded firmware project and deployed in a way where it could be easily integraded by development software teams.

The use of NuttX as a library allows this, with the side-effect to let the on-the-fly NuttX customization harder.

Subcomponents

This project uses the following subcomponents:

• libmodbus
• mbedtls
• mqtt-c

These open souce projects were forked and placed on PHI-Innovations github repository.

Features

• MODBUS Scanning
  • Periodic scan
  • Individual MODBUS map for each slave
  • Registers saved internally as files, in an independent fashion
• MQTT data transmission
  • Periodic transmission
  • Transmit files previously stored
• USB configuration
  • CDC based USB communication
  • JSON-based messages
• Network management
  • Access to server done by Ethernet
  • WiFi and 2G modem not validated

Build instruction

$ make default

Load the firmware

$ make run

TODO

• Improve documentation
• Add support for standard bootloader (need to choose one)