How to reference devices table from within execute function [Solved]

[ugge]

I want to calculate the average barometer pressure whenever any of my barometers change.
The script triggers via the devices table inside on.
How can I reference the list/table of devices in the on section?

This is my code so far, but it tells me

bad argument #1 to 'pairs' (table expected, got nil)

Code: Select all

return {
	on = {
		devices = {
			773,
			786,
			747,
			871
		},
		timer = {
		    'every minute'
		},
	},
	logging = {
	    level = domoticz.LOGINFO,
	    marker = 'Tryck',
	},
	execute = function(domoticz, device)
		local height = 124
		local pressure = 0
		-- Calculate mean pressure and correct for height
		for _, p in pairs(devices) do
		    pressure = pressure + domoticz.devices(p).barometer / #devices
		    domoticz.log('Average pressure: ' .. pressure, domoticz.LOGINFO)
		end
		-- Update virtual barometer
		-- domoticz.devices('Lufttryck').updateBarometer(pressure)
	end
}
}

As far as I understand the devices specified in the on section is not the same as devices (global?) referenced by me that I reference in the code.
Is there a way to reference devices = { 773, 786, 747, 871} as a table to calculate the average similar to what I try in my code?

[mgugu]

You have to initialize table of devices before:

local onDevices_table = {773,786,747,871}
return {
on = {devices = onDevices_table,
timer = {
'every minute'
},
},
logging = {
level = domoticz.LOGINFO,
marker = 'Tryck',
},
execute = function(domoticz, device)
local height = 124
local pressure = 0
-- Calculate mean pressure and correct for height
for _, p in pairs(onDevices_table) do
pressure = pressure + domoticz.devices(p).barometer / #devices
domoticz.log('Average pressure: ' .. pressure, domoticz.LOGINFO)
end
-- Update virtual barometer
-- domoticz.devices('Lufttryck').updateBarometer(pressure)
end
}
}

[ugge]

Thanks, worked like a charm.