How to create timers in rules

[vzorglub (Vincent Regaud)]

@csowada

n openhab items are automatically updated by commands. This is currently not the task of the bindings. But when a binding is unable to execute the command the item is set anyway and displays an incorrect status.

Only by adding autoupdate=“false” to the item configuration this behavior can be disabled per item. In this case you have to update the item manually by rule because the bindings do not do this.

For your second question, the answer is: You can’t. We will have to create another item like a toggle that goes on and off each time the item GF_Entryway_Light2 receives a command ON and you will need some rules to deals with that.

So Items:

// Updated Item
// Only sends command OFF to the relay and expire OFF after 3s
Switch   GF_Entryway_Light2                  "Entrance Ceiling"            <light>            (GF_Entryway, gLights, gLight2)                  [ "Lighting"   ]   { mqtt=">[broker:cmnd/kitchen/power2:command:OFF:OFF]", expire="3s,command=OFF" }

//This one doesn't change
Switch   GF_Kitchen_Light3                   "Kitchen Downlights"          <light>            (GF_Kitchen, gLights, gLight3)                   [ "Lighting"   ]   { mqtt=">[broker:cmnd/kitchen/power1:command:*:default], <[broker:stat/kitchen/POWER1:state:default]", autoupdate="true" }

// New Item
// Both command ON and OFF send ON to the relay
Switch   GF_Entryway_Light2_Toggle "Entrance Ceiling" <light>  (GF_Entryway, gLights, gLight2) [ "Lighting" ] { mqtt=">[broker:cmnd/kitchen/power2:command:ON:ON], >[broker:cmnd/kitchen/power2:command:OFF:ON]" }

Rules:

rule "Entryway light toggles"
when
    // Every time the switch is actionned on the sitemap a command is received
    // It doesn't matter if it's ON or OFF because the command triggered the relay ON
    // as per the binding
    Item GF_Entryway_Light2_Toggle received command
then
    GF_Entryway_Light2.sendCommand(ON) // After 3s an OFF command will be sent by the expire binding and trigger the relay OFF
end

In your sitemap, replace the item GF_Entryway_Light2 by the item GF_Entryway_Light2_Toggle

What happens is that every time you action that toggle on the sitemap, an ON command is sent to the relay and a timer is started in another item for 3s. When that timer expires, the second item (Timer one) will send a off command to the relay. But your first item remains ON or OFF.

Regards