spejsiot
========

This is the repository of hswaw spejsiot project, meant to IoTize EVERYTHING easily.

This includes simple framework for building appliances compatible with
[Homie MQTT convention](https://github.com/marvinroger/homie), based on cheapo
ESP8266 SoCs and [Sming](https://github.com/SmingHub/Sming).

It currently supports most of Homie protcol (with `homie/` prefix replaced
by `iot/`), OTA and preliminary SSL support. (provided by Sming itself, currently
not enabled)

Sample application is present in `switch/` directory. (simple relay device)
For more information take a look at [project wiki page](https://wiki.hackerspace.pl/projects:spejsiot).


Getting started
---------------

    # Create relevant environment variables in your ~/.bashrc
    cat >> ~/.bashrc <<EOF
        # ESP8266 toolchain setup
        export ESP_HOME="$HOME/esp-open-sdk"
        export SDK_BASE="$ESP_HOME/sdk"
        export XTENSA_TOOLS_ROOT="$ESP_HOME/xtensa-lx106-elf/bin"
        export PATH="$XTENSA_TOOLS_ROOT:$PATH"
        
        # Sming setup
        export SMING_HOME="$HOME/Sming/Sming"
        export ESPTOOL="$ESP_HOME/xtensa-lx106-elf/bin/esptool.py"
        export ESPTOOL2="$HOME/esptool2/esptool2"
        
        # This is for Wemos D1 Mini and some NodeMCU boards
        export ESPPORT="/dev/serial/by-id/usb-1a86_USB2.0-Serial-if00-port0"
        export COM_PORT="$ESPPORT"
        
        # Make flashing slightly (4x) faster.
        export ESPBAUD=460800
        export COM_SPEED_ESPTOOL="$ESPBAUD"
    EOF
    
    source ~/.bashrc
    
    # Setup ESP8266 development environment (some additional packages may be needed)
    git clone --recursive https://github.com/pfalcon/esp-open-sdk.git $ESP_HOME
    pushd $ESP_HOME && make && popd
    
    git clone https://github.com/raburton/esptool2 $ESPTOOL2/..
    pushd $ESPTOOL2/.. && make && popd
    
    # Setup Sming environment
    git clone --recursive https://github.com/SmingHub/Sming $SMING_HOME/..
    pushd $SMING_HOME && make && popd
    
    # Build test spejsiot app
    git clone https://code.hackerspace.pl/informatic/spejsiot
    cd spejsiot/switch/ && make flash

**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.

Configuration
-------------

Basic node configuration (MQTT broker IP, 802.11 credentials) is present
in `common/common_config.h`.

TODO
----
 * Store configuration (credentials, broker IP, maybe endpoints?) in
   flash memory
 * Docs, ffs