kalmon-ESP8266

About

This is a fun little ESP8266 project.

It's a framework (kind of) created to minimize the effort required to develop, configure, manage and connect a device running NodeMCU firmware.

With this framework on your device, you will have out-of-the-box support for:

• Creating modules which can extend or hook into existing events using a hook system
• Periodic reporting over MQTT
• Reusable, toggleable third-party modules
• py-kalmon: a management CLI tool which can communicate with nodes over MQTT or TCP with the node acting as a Wifi AP, providing:
  • File management (CD)
  • Configuration management (CRUD)
  • OTA updates for the framework
  • Pluggable controls for integration with existing (HA) systems
  • Basic stats gathering
  • Basic node discovery

Installation

Setting up the development environment

Setting up the basic development environment:

git clone https://github.com/kalmanolah/kalmon-ESP8266
cd kalmon-ESP8266
sudo pip2 install -r requirements.txt -U

Uploading the files

Uploading the base files to the device:

make upload_base PORT=/dev/ttyAMA0

Alternately, uploading files one by one:

make upload FILE=init.lua PORT=/dev/ttyAMA0

Configuring the node

When booting, your node will enter into either the application or configuration mode depending on the state of your cfg_pin (GPIO 02 by default). A diagram describing the logic for determining the mode can be found [here](docs/diagrams/Kalmon Logic Diagram.png).

Booting into application mode assumes basic configuration of the node has already happened, and as such also assumes you have configured the following settings:

• sta_ssid (WiFi AP SSID)
• sta_psk (WiFi AP password)
• mqtt_host (MQTT host - IP or hostname)
• mqtt_port (MQTT port)
• mqtt_secure (MQTT SSL/TLS flag - boolean)
• mqtt_user (MQTT username)
• mqtt_password (MQTT password)

If you have not yet configured the settings mentioned above, you will most likely want to boot your node in configuration mode first. In this mode, your node will create its own AP with SSID set to ESP-${chip_id} and password set to ESP-8266 by default.

When in configuration mode, you can set settings by connecting to your node's AP, opening a TCP socket connection to 192.168.4.1:80 and transmitting JSON payloads in the following format:

{
    "key": "foo",                 // cfg key
    "value": "bar",               // cfg value
    "rid": "my-unique-request-id" // optional request id
}

The configuration process outlined above can be simplified by using py-kalmon to configure your node instead.

Roadmap

This is not a real roadmap.

Working:

• Mode auto-detection
• Initial module system
• Configuration parameter registration
• Step-by-step reporting
• DHT module
• Battery module
• Command handlers
• OTA updating
• Restart command
• Node info command
• Configuration commands

TODO:

• Logging over MQTT
• Write documentation

License

See LICENSE.

Links/Attributions

• nodemcu-uploader
• esptool
• py-kalmon