This example shows how all features of EnigmaIOTjsonController.h may be used to build a complete node.

It controls a relay and gets messages by button presses. Button may be linked so that relay is toggled on every button press.

Three configurable parameters are added:

Relay pin
Button pin
Initial relay status after boot: it may be either ON, OFF or SAVED. If this is "SAVED" node stores last status and keeps after a reboot.

Relay is controller with this command

<Network_name>/<node_name or node_address>/set/data {"cmd":"rly","rly":< 1 or 0 >}

If button is pressed, this MQTT message is produced

<Network_name>/<node_name or node_address>/data {"button":< button_pin >,"push":1}

To change button and relay link status you may use this message

<Network_name>/<node_name or node_address>/set/data {"cmd":"link","link":< 1 or 0 >}

1 makes button and relay to be linked, 0 makes that button does not produce any immediate effect in relay.

Initial relay state after boot may be configured with a MQTT message too.

<Network_name>/<node_name or node_address>/set/data {"cmd":"bstate","bstate":< 0, 1 or 2 >}

0 and 1 mean that LED will start in OFF or ON state respectively, and 2 means that status will be saved.

You may ask about these configurations using

<Network_name>/<node_name or node_address>/det/data {"cmd":<command>}

Command field may be rly, link or bstate.