Delay notification

Developer's Corner Scene Scripting
#1

Hi
This should be simple but I can’t find out how to do it.
I have a temperature sensor in my frezzer and I want a notification send to me when the temperature is above -5 C
BUT the notification should not be send until after 30 minutes if the temperature still is above -5 C

#2

[quote=“olaeke, post:1, topic:186700”]Hi
This should be simple but I can’t find out how to do it.
I have a temperature sensor in my frezzer and I want a notification send to me when the temperature is above -5 C
BUT the notification should not be send until after 30 minutes if the temperature still is above -5 C[/quote]

This would be easy to achieve using PLEG. I believe there have been solutions posted previously. If you don’t already use PLEG, see PLEG Basics for an introduction.

It could also be done using Lua code in a scene. If the scene is triggered when the temperature rises above -5 C, you would start a delay for 30 minutes. When the delay call-back happens, check the temperature. If it is still high, send the notification and start the delay again. There is example code for most of this in Conditional Scene Execution.

#3

How do I “send notification” in Lua code?

#4

The best way is to use the Vera Alerts plugin - from the App Store. There is a dedicated Vera Alerts board.

#5

But if I don’t want to use plugin for everything how can I program it in Lua ?

#6

Create a scene with the required notification. Run the scene using:

luup.call_action("urn:micasaverde-com:serviceId:HomeAutomationGateway1", "RunScene", {SceneNum = 123}, 0)
#7

Just for reference for other with the same question, here is working luup block:

--Wait 45 min for new temp reading
luup.call_delay("checkFrezzerTemp", 2700)

function checkFrezzerTemp()
  local thisTemp = tonumber((luup.variable_get("urn:upnp-org:serviceId:TemperatureSensor1", "CurrentTemperature", 38)))
  if thisTemp > -7 then
    luup.call_action("urn:micasaverde-com:serviceId:HomeAutomationGateway1", "RunScene", {SceneNum = 16}, 0)
    luup.call_delay("checkFrezzerTemp", 2700)
  end
end

Create this in one scene
Create another scene which do the notification, in my example this is scene #16

#8

Just hope that Vera does NOT restart during that 45 minute interval … your delayed action will be lost.