Device Updater

This project is a Python-based MQTT device updater designed to manage firmware updates and status monitoring for IoT devices. It communicates with devices over MQTT, checks their firmware versions, and triggers over-the-air (OTA) updates when necessary.

Features

• Connects to an MQTT broker and subscribes to device response topics.
• Publishes commands to devices to query their firmware version.
• Compares device firmware versions to the latest version and initiates OTA updates if outdated.
• Maintains JSON records for each device, including update status.
• Logs all operations to updater.log for traceability.

File Structure

• update.py: Main script containing all logic for MQTT communication, device version checking, and update management.
• requirements.txt: List of required Python packages.
• devices/: Directory where per-device JSON files are stored (created at runtime).
• data/devices.json: JSON file containing the list of device serial numbers to manage (must be present at runtime).

Requirements

• Python 3.x
• paho-mqtt library

Install dependencies with:

pip install -r requirements.txt

Usage

1. Ensure your MQTT broker is running and accessible (default: 127.0.0.1:1883).
2. Place a devices.json file in a data/ directory, listing the serial numbers of devices to manage (as a JSON array).
3. Run the updater:

python update.py

Logging

All actions and warnings are logged to updater.log in the project directory.

Customization

• Update the broker and port variables in update.py to match your MQTT broker settings.
• Adjust the latestVer variable to set the required firmware version.

License

MIT License (add your license details here)