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README.md

mqtt-playground

This repository is a storage for my mqtt and IoT (( ͡° ͜ʖ ͡°)) playground.

Hardware

Current tests involve NodeMCU ESP12-E/ESP8266 boards. Switch is activated with GPIO0 (FLASH button on NodeMCU) and light is connected to GPIO2, where blue LED is directly connected on ESP-12E module.

Software

Mosquitto contained in docker is used as a broker. For proper TLS you need to create self-signed certificate and store its SHA-1 fingerprint in common/common_config.h.

ESP8266 code uses patched slaff's fork of Sming framework. (For axTLS support) Set your Wifi configuration in common/common_config.h (used by both switch and light)

Thoughts

Oh my, that's slow.^W^Wquite fast, when patched properly.

WARNING! Sming.reset(); jumps to (serial) bootloader right after flashing. This causes OTA to fail with wdt reset. External RESET assert is required after flashing.

TODO

Store configuration (credentials, broker IP, maybe endpoints?) in flash memory
[!] Fix OTA