Scene number?

[parkerc]

ISSUE : Current status is if I go to Create Device, it will not appear on the UI, however I can see what I think it is via an all devices look up, but it has very few attributes. It does not look like the L_IPPower.lua file is being called ??

Here is the latest L_IPPower1.lua, I can only assume for now it’s not being called, or requirements such as lul_device are not being passed to it.. What’s strange is that there is nothing in the logs, so I can only assume the latter ? I’ve tried the Lua file with and without the package_seeall declaration..

Lua file = L_IPPower1.lua

module("L_IPPower1", package.seeall)

local POLLING_INTERVAL = 30
local OUTLET_START = 61 -- API returns the first socket as P61
local OUTLET_END = 68 -- depending on your device, it can be a 4 or 8 port, so 64 or 68
local DEBUG_MODE = true -- turn on debugging
local PV = "1.1" -- plugin version number
local ipAddress
local childDeviceIndex = {}
		
local function log(text, level)
        	luup.log("IPPower: " .. text, (level or 1))
	end

local function debug(text)
	if (DEBUG_MODE == true) then
              	log("debug: " .. text, 50)
	end
end
		
function IPPowerPoller() -- Call IPPower to return state of each outlet
	local user = "admin"
	local pass = "12345678"
		debug("Polling IPPower Device")
			
	local url = "http://" .. ipAddress .. "/set.cmd?user=".. user .. "+pass=" .. pass .. "+cmd=getpower"
		luup.call_timer("IPPowerPoller", 1, POLLING_INTERVAL, "", "")
		debug("Calling status  " .. url)
			
	local status, data = luup.inet.wget(url)
		if (data) then
			debug("Response received " .. data)
			-- Example response is "P61=0,P62=1,P63=0,P64=0,P65=1,P66=0,P67=0,P68=0"
		else
			log("Empty response returned")
		end
			
		for v = OUTLET_START,OUTLET_END do
			local value = string.match(data, "P"..v.."=(%d)")
				if (value) then 
					luup.variable_set("urn:upnp-org:serviceId:SwitchPower1", "Status", value, childDeviceIndex["P"..v])
				else
					log("Empty value returned")
				end
			end
		end
		
local function checkIPPowerSetUp(lul_device)
	log("Checking if parent device is configured correctly...")
	ipAddress = luup.devices[lul_device].ip
	-- check if parent device has an ip address assigned 
	if ipAddress == nil or ipAddress == "" then -- if not stop and present error message
		luup.task('ERROR: IP Address is missing',2,'IPPower',-1)
			debug("ERROR: IP Address is missing " ..ipAddress.. " unable to progress")
				--return false
		luup.set_failure(1,lul_device)
	else -- if one is provided, present success message
		luup.task('IP Address for IPPower 9258 present, setup continues',4,'IPPower',-1)
			debug("IPPower StartUp activated - Device #" .. lul_device .. " now creating children")
			--luup.call_delay("IPPowerPoller", 5)
			--return true
	end
end
			
-- Initialize plug-in

function IPPowerStartup(lul_device)
	-- set attributes for parent device
	luup.attr_set( "name", "IPPower 9258", lul_device)
	luup.attr_set( "category_num", "3", lul_device)
	luup.attr_set( "subcategory_num", "1", lul_device)
	luup.variable_set("urn:nodecentral-net:serviceId:IPPower1", "Icon", 1, lul_device)
	luup.variable_set("urn:nodecentral-net:serviceId:IPPower1", "PluginVersion", PV, lul_device)
	log("Start up, Parent device created...")

	child_devices = luup.chdev.start(lul_device) 
	-- Tells Luup to start enumerating children for this device based on its dev_id

	for v = OUTLET_START,OUTLET_END do
	luup.chdev.append(lul_device,child_devices, "P" .. v, " Outlet " .. v, "urn:nodecentral-net:device:IPPower:1", "D_IPPower1.xml", "", "", false)
		debug("Child device created with id = P" .. v, " and description = Switch" .. v)
	end

		luup.chdev.sync(lul_device, child_devices)
		
	for k, v in pairs(luup.devices) do
		if (v.device_num_parent == lul_device) then -- populate child device table
			childDeviceIndex[v.id]=k
		end
	end
		checkIPPowerSetUp(lul_device)
end

[a-lurker]

This is not required as you are not making a library/module component:

module("L_IPPower1", package.seeall)

Your implementation file says:

<startup>IPPowerStartup</startup>

yet your Lua code does not contain that function. So there's nothing to call. For testing, that function, could just write to the log and do nothing else. Don't forget every-time you change something you have to restart the Luup engine. This the slow apporach. Typically you would write and test your code first using some sort of test environment and then link it all into the implementation file.

After making any changes to your xml files with, you should check them for errors with a xml validator.

[parkerc]

Thanks @a-lurker

Good to know, as I only added module("L_IPPower1", package.seeall) at the last minute, as I thought that might be the cause, and could see other like @toggledbits had it

As for the IPPowerStartup function, I do have that in there, it’s on line 66 in the L_IPPower1 file, shared above..

What am I missing, I must be missing something ?

I’ll try variations, I assume it must be something like this <startup>L_IPPower1.IPPowerStartup(lul_device)</startup> instead then ?

@a-lurker said in Add-on - Aviosys IPPower 9258:

Typically you would write and test your code first using some sort of test environment and then link it all into the implementation file.

After making any changes to your xml files with, you should check them for errors with a xml validator.

Yep, totally agree and that exactly what I’ve been doing, all the functions seem to check out fine in isolation - I’m just struggling to pull them all together into a stand-alone plugin.

As for the validators, totally agree, I’m a big user of the json one, and all my xml ones - all check out too.

[toggledbits]

I structure my implementation in modules, and load it in my startup section, not using <files>. This is an important distinction. You cannot mix and match styles. You have to go one way or the other.

[parkerc]

Ok, thanks @toggledbits , that makes sense, I’d like to get the <files> approach working at some point, but let’s try one with modules too.. Which means my I_IPPower.xml will now be something like this..? With the L_IPPower.lua having the seeall declaration this time..?

<?xml version="1.0"?>
<!-- 
	I_IPPower.xml; Vera/openLuup "IPPower 9258" Plug-in 
	V1.1 Nov 2021
-->
<implementation>
		<functions>
		function initialiseIPPowerPlugin(lul_device)
			luup.log("IPPower Plugin START-UP!")
			IPPower = require("L_IPPower1")
			return IPPower.IPPowerStartup(lul_device)
			end
		</functions>
	<startup>initialiseIPPowerPlugin</startup>
	<actionList>

[parkerc]

Oh no., somethings gone wrong, it’s now finding the start up but it’s going into some sort of loop of child device creations - and continual luup.reloads !!??

The function called by the implementation file is still this..

-- Initialize plug-in
function IPPowerStartup(lul_device)
	-- set attributes for parent device
	luup.attr_set( "name", "IPPower 9258", lul_device)
	luup.attr_set( "category_num", "3", lul_device)
	luup.attr_set( "subcategory_num", "1", lul_device)
	luup.variable_set("urn:nodecentral-net:serviceId:IPPower1", "Icon", 1, lul_device)
	luup.variable_set("urn:nodecentral-net:serviceId:IPPower1", "PluginVersion", PV, lul_device)
	log("Start up, Parent device created...")

	child_devices = luup.chdev.start(lul_device) 
	-- Tells Luup to start enumerating children for this device based on it's dev_id

	for v = OUTLET_START,OUTLET_END do
	luup.chdev.append(lul_device,child_devices, "P" .. v, " Outlet " .. v, "urn:nodecentral-net:device:IPPower:1", "D_IPPower1.xml", "", "", false)
		debug("Child device created with id = P" .. v, " and description = Switch" .. v)
	end

		luup.chdev.sync(lul_device, child_devices)
		
	for k, v in pairs(luup.devices) do
		if (v.device_num_parent == lul_device) then -- populate child device table
			childDeviceIndex[v.id]=k
		end
	end
		checkIPPowerSetUp(lul_device)
end

[parkerc]

From what I can see for the Log file extract, it seems to keep incrementing (deleting and creating) the child devices ?

50      11/14/21 21:06:20.986   luup_log:600: IPPower Plugin START-UP! <0x76db4520>
06      11/14/21 21:06:20.990   Device_Variable::m_szValue_set device: 600 service: urn:nodecentral-net:serviceId:IPPower1 variable: Icon was: 1 now: 1 #hooks: 0 upnp: 0 skip: 0 v:(nil)/NONE duplicate:1 <0x76db4520>
06      11/14/21 21:06:20.990   Device_Variable::m_szValue_set device: 600 service: urn:nodecentral-net:serviceId:IPPower1 variable: PluginVersion was: 1.1 now: 1.1 #hooks: 0 upnp: 0 skip: 0 v:(nil)/NONE duplicate:1 <0x76db4520>
01      11/14/21 21:06:20.990   luup_log:600: IPPower: Start up, Parent device created... <0x76db4520>
50      11/14/21 21:06:20.991   luup_log:600: IPPower: debug: Child device created with id = P61 <0x76db4520>
50      11/14/21 21:06:20.991   luup_log:600: IPPower: debug: Child device created with id = P62 <0x76db4520>
50      11/14/21 21:06:20.992   luup_log:600: IPPower: debug: Child device created with id = P63 <0x76db4520>
50      11/14/21 21:06:20.992   luup_log:600: IPPower: debug: Child device created with id = P64 <0x76db4520>
50      11/14/21 21:06:20.992   luup_log:600: IPPower: debug: Child device created with id = P65 <0x76db4520>
50      11/14/21 21:06:20.992   luup_log:600: IPPower: debug: Child device created with id = P66 <0x76db4520>
50      11/14/21 21:06:20.993   luup_log:600: IPPower: debug: Child device created with id = P67 <0x76db4520>
50      11/14/21 21:06:20.993   luup_log:600: IPPower: debug: Child device created with id = P68 <0x76db4520>
09      11/14/21 21:06:20.993   Child_Devices::ProcessChildDevice deleting device 889 id P61 room 0 desc  Outlet 61 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 under 600 topmost parent 600 because type o:urn:schemas-micasaverde-com:device:GenericIO:1!=n:urn:nodecentral-net:device:IPPower:1 or file o:D_IPPower1.xml!=n:D_IPPower1.xml embedded o:0!=n:0 ok:0/1 <0x76db4520>
02      11/14/21 21:06:21.011   UserData::CommitToDatabase data size 86066 86066 <0x76db4520>
02      11/14/21 21:06:21.107   Device_Basic::m_sDescription_set device 897. description:  Outlet 61 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 exist already, new Description:  Outlet 61 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 <0x76db4520>
09      11/14/21 21:06:21.109   Child_Devices::ProcessChildDevice created device 897 id P61 under 600 topmost parent 600 <0x76db4520>
09      11/14/21 21:06:21.110   Child_Devices::ProcessChildDevice deleting device 890 id P62 room 0 desc  Outlet 62 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 under 600 topmost parent 600 because type o:urn:schemas-micasaverde-com:device:GenericIO:1!=n:urn:nodecentral-net:device:IPPower:1 or file o:D_IPPower1.xml!=n:D_IPPower1.xml embedded o:0!=n:0 ok:0/1 <0x76db4520>
02      11/14/21 21:06:21.234   UserData::CommitToDatabase data size 85500 85500 <0x76db4520>
02      11/14/21 21:06:21.240   Device_Basic::m_sDescription_set device 898. description:  Outlet 62 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 exist already, new Description:  Outlet 62 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 <0x76db4520>
09      11/14/21 21:06:21.244   Child_Devices::ProcessChildDevice created device 898 id P62 under 600 topmost parent 600 <0x76db4520>
09      11/14/21 21:06:21.244   Child_Devices::ProcessChildDevice deleting device 891 id P63 room 0 desc  Outlet 63 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 under 600 topmost parent 600 because type o:urn:schemas-micasaverde-com:device:GenericIO:1!=n:urn:nodecentral-net:device:IPPower:1 or file o:D_IPPower1.xml!=n:D_IPPower1.xml embedded o:0!=n:0 ok:0/1 <0x76db4520>
02      11/14/21 21:06:21.376   UserData::CommitToDatabase data size 84934 84934 <0x76db4520>
02      11/14/21 21:06:21.381   Device_Basic::m_sDescription_set device 899. description:  Outlet 63 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 exist already, new Description:  Outlet 63 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 <0x76db4520>
09      11/14/21 21:06:21.386   Child_Devices::ProcessChildDevice created device 899 id P63 under 600 topmost parent 600 <0x76db4520>
09      11/14/21 21:06:21.386   Child_Devices::ProcessChildDevice deleting device 892 id P64 room 0 desc  Outlet 64 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 under 600 topmost parent 600 because type o:urn:schemas-micasaverde-com:device:GenericIO:1!=n:urn:nodecentral-net:device:IPPower:1 or file o:D_IPPower1.xml!=n:D_IPPower1.xml embedded o:0!=n:0 ok:0/1 <0x76db4520>
02      11/14/21 21:06:21.491   UserData::CommitToDatabase data size 84368 84368 <0x76db4520>
02      11/14/21 21:06:21.494   Device_Basic::m_sDescription_set device 900. description:  Outlet 64 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 exist already, new Description:  Outlet 64 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 <0x76db4520>
09      11/14/21 21:06:21.497   Child_Devices::ProcessChildDevice created device 900 id P64 under 600 topmost parent 600 <0x76db4520>
09      11/14/21 21:06:21.497   Child_Devices::ProcessChildDevice deleting device 893 id P65 room 0 desc  Outlet 65 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 under 600 topmost parent 600 because type o:urn:schemas-micasaverde-com:device:GenericIO:1!=n:urn:nodecentral-net:device:IPPower:1 or file o:D_IPPower1.xml!=n:D_IPPower1.xml embedded o:0!=n:0 ok:0/1 <0x76db4520>
02      11/14/21 21:06:21.568   UserData::CommitToDatabase data size 83802 83802 <0x76db4520>
02      11/14/21 21:06:21.572   Device_Basic::m_sDescription_set device 901. description:  Outlet 65 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 exist already, new Description:  Outlet 65 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 <0x76db4520>
09      11/14/21 21:06:21.575   Child_Devices::ProcessChildDevice created device 901 id P65 under 600 topmost parent 600 <0x76db4520>
09      11/14/21 21:06:21.575   Child_Devices::ProcessChildDevice deleting device 894 id P66 room 0 desc  Outlet 66 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 under 600 topmost parent 600 because type o:urn:schemas-micasaverde-com:device:GenericIO:1!=n:urn:nodecentral-net:device:IPPower:1 or file o:D_IPPower1.xml!=n:D_IPPower1.xml embedded o:0!=n:0 ok:0/1 <0x76db4520>
02      11/14/21 21:06:21.645   UserData::CommitToDatabase data size 83236 83236 <0x76db4520>
02      11/14/21 21:06:21.649   Device_Basic::m_sDescription_set device 902. description:  Outlet 66 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 exist already, new Description:  Outlet 66 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 <0x76db4520>
09      11/14/21 21:06:21.652   Child_Devices::ProcessChildDevice created device 902 id P66 under 600 topmost parent 600 <0x76db4520>
09      11/14/21 21:06:21.652   Child_Devices::ProcessChildDevice deleting device 895 id P67 room 0 desc  Outlet 67 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 under 600 topmost parent 600 because type o:urn:schemas-micasaverde-com:device:GenericIO:1!=n:urn:nodecentral-net:device:IPPower:1 or file o:D_IPPower1.xml!=n:D_IPPower1.xml embedded o:0!=n:0 ok:0/1 <0x76db4520>
02      11/14/21 21:06:21.722   UserData::CommitToDatabase data size 82670 82670 <0x76db4520>
02      11/14/21 21:06:21.726   Device_Basic::m_sDescription_set device 903. description:  Outlet 67 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 exist already, new Description:  Outlet 67 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 <0x76db4520>
09      11/14/21 21:06:21.728   Child_Devices::ProcessChildDevice created device 903 id P67 under 600 topmost parent 600 <0x76db4520>
09      11/14/21 21:06:21.729   Child_Devices::ProcessChildDevice deleting device 896 id P68 room 0 desc  Outlet 68 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 under 600 topmost parent 600 because type o:urn:schemas-micasaverde-com:device:GenericIO:1!=n:urn:nodecentral-net:device:IPPower:1 or file o:D_IPPower1.xml!=n:D_IPPower1.xml embedded o:0!=n:0 ok:0/1 <0x76db4520>
02      11/14/21 21:06:21.798   UserData::CommitToDatabase data size 82104 82104 <0x76db4520>
02      11/14/21 21:06:21.802   Device_Basic::m_sDescription_set device 904. description:  Outlet 68 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 exist already, new Description:  Outlet 68 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 <0x76db4520>
09      11/14/21 21:06:21.805   Child_Devices::ProcessChildDevice created device 904 id P68 under 600 topmost parent 600 <0x76db4520>
06      11/14/21 21:06:21.805   Device_Variable::m_szValue_set device: 1 service: urn:micasaverde-com:serviceId:ZWaveNetwork1 variable: LastDongleBackup was:  now:  #hooks: 0 upnp: 0 skip: 0 v:(nil)/NONE duplicate:1 <0x76db4520>
01      11/14/21 21:06:21.830   UserData::WriteUserData saved--before move File Size: 22154 save size 22154 <0x76bb4520>
02      11/14/21 21:06:21.831   UserData::TempLogFileSystemFailure start 0 <0x76bb4520>
02      11/14/21 21:06:21.847   UserData::TempLogFileSystemFailure (not failure, only WriteUserData) 0 <0x76bb4520>
02      11/14/21 21:06:21.848   UserData::TempLogFileSystemFailure 699 res:1

[toggledbits]

You have to be super-careful with how you structure your luup.chdev work. If the loop creates or deletes any child, then the sync() will cause a restart, so it's very easy to get reload loops.

[parkerc]

@toggledbits said in Add-on - Aviosys IPPower 9258:

You have to be super-careful with how you structure your luup.chdev work. If the loop creates or deletes any child, then the sync() will cause a restart, so it's very easy to get reload loops.

Agreed, and it’s my first attempt at doing this, and i even remember making a note of the warning on the wiki - http://wiki.micasaverde.com/index.php/Luup_Lua_extensions#Module:_luup.chdev .

When the final luup.chdev.sync is executed the children are checked. Any additions, changes or deletions will result in a Luup engine restart. Any incorrect coding of luup.chdev.append may result in a situation where the engine goes into a loop and continually restarts. As an example, if two children are added with the same id parameter, this will occur. To recover, you need to quickly upload a new file that has the faulty "append" code commented out. In the interim the engine will be incrementing the device ID numbers with no end in sight.

I can’t work out why the chdev is doing that , can you see any issue with my chdev.start and append that would cause the sync to do that ?

local OUTLET_START = 61 -- API returns the first socket as P61
local OUTLET_END = 68 -- depending on your device, it can be a 4 or 8 port, so 64 or 68 

child_devices = luup.chdev.start(lul_device) 
	-- Tells Luup to start enumerating children for this device based on it's dev_id , this returns: ptr (binary object) which is used in the cheer.append.

 for v = OUTLET_START,OUTLET_END do
     luup.chdev.append(lul_device,child_devices, "P" .. v, " Outlet " .. v, "urn:nodecentral-net:device:IPPower:1", "D_IPPower1.xml", "", "", false)
	debug("Child device created with id = P" .. v, " and description = Switch" .. v)
	end

luup.chdev.sync(lul_device, child_devices)
		
for k, v in pairs(luup.devices) do
		if (v.device_num_parent == lul_device) then -- populate child device table
			childDeviceIndex[v.id]=k
	end
end

[parkerc]

I’ve discovered that if I change the chdev.append so it creates a different device (see below), i don’t seem to get the loop issue.

I assume this is likely due to the previous set up had the append calling the same implementation file as the parent, which looks to create children - thus triggers a loop ?

for v = OUTLET_START,OUTLET_END do
	luup.chdev.append(lul_device,child_devices, "P" .. v, " Outlet " .. v, "urn:schemas-upnp-org:device:BinaryLight:1", "D_BinaryLight1.xml", "", "", false)
	end

[toggledbits]

Since you have handleChildren set to 1 in the D_.xml (device) file, the children should not receive an implementation file at all (it should be blank/empty string in append()). And it seems right that the children also should not have the same device type as the parent.

[parkerc]

Agreed, many thanks .

Well it looks like I’m almost there now, the only thing left to fix is the the luup.call_timer I have on the main polling function in L_IPPower1.lua file .

Here’s the function..

function IPPowerPoller() -- Call IPPower to return state of each outlet
	local user = "admin"
	local pass = "12345678"
		debug("Started Polling IPPower Device")
			
	local url = "http://" .. ipAddress .. "/set.cmd?user=".. user .. "+pass=" .. pass .. "+cmd=getpower"
		debug("Calling URL " .. url)
	local status, data = luup.inet.wget(url)
		if (data) then
			debug("Response received " .. data)
			-- Example response is "P61=0,P62=1,P63=0,P64=0,P65=1,P66=0,P67=0,P68=0"
		else
			log("Empty response returned")
		end
			
	for v = OUTLET_START,OUTLET_END do
		local value = string.match(data, "P"..v.."=(%d)")
			if (value) then 
				luup.variable_set("urn:upnp-org:serviceId:SwitchPower1", "Status", value, childDeviceIndex["P"..v])
			else
				log("Empty value returned") 
			end
	end
	debug("Finished Polling IPPower Device")
	luup.call_timer("IPPowerPoller", 1, 30, "", "")
end

Which returns this..

01	11/15/21 0:00:58.100	LuaInterface::CallFunction_Timer-5 function IPPowerPoller failed attempt to call a nil value <0x74e48520>

I might just be tired, but I can’t work out the cause here, any ideas?

I’ve made it a local and a global function, called it with and without the module name, all return the same nil value error?

[toggledbits]

@parkerc said in Add-on - Aviosys IPPower 9258:

I might just be tired, but I can’t work out the cause here, any ideas?
I’ve made it a local and a global function, called it with and without the module name, all return the same nil value error?

If you're getting the same nil error, you're somehow not making a global, or making it with the correct name/using the correct name. In order to help there, I'd need to see the current I_ and L_ files in their entirety.

But before you do that, I think you said you were looking at the SiteSensor code as an example, and you invoked the "module" word, so... in the I_SiteSensor file, look at how I create a global called siteSensorWatch that is an alias for the module's function. This creates a global, which must be done in the scope of the implementation (I_) file if the L_ file is a module. Then in my L_SiteSensor module, you can see in the luup.variable_watch statements where I'm using that name -- the function name parameter for that works the same as it does for call_delay and call_timer. Check that out, and see if you can work out what you didn't get to there.

[parkerc]

@toggledbits said in Add-on - Aviosys IPPower 9258:

…… in the I_SiteSensor file, look at how I create a global called siteSensorWatch that is an alias for the module's function. This creates a global, which must be done in the scope of the implementation (I_) file if the L_ file is a module.

I had a look in your Implementation file , but could not see anything called siteSensorWatch listed?

Here is the opening of my a I_IPPower.xml` Implementation file..

<?xml version="1.0"?>
<!-- 
	I_IPPower.xml; Vera/openLuup "IPPower 9258" Plug-in 
	V1.1 Nov 2021
-->
<implementation>
		<functions>
		function initialiseIPPowerPlugin(lul_device)
			luup.log("IPPower: IPPower Plugin STARTING-UP!")
			IPPower = require("L_IPPower1")
			return IPPower.IPPowerStartup(lul_device)
		end
		</functions>
	<startup>initialiseIPPowerPlugin</startup>
	<actionList>
		<action>

@toggledbits said in Add-on - Aviosys IPPower 9258:

Then in my L_SiteSensor module, you can see in the luup.variable_watch statements where I'm using that name -- the function name parameter for that works the same as it does for call_delay and call_timer. Check that out, and see if you can work out what you didn't get to there.

Right, I’m on it, I couldn’t find any luup.variable_watch calls, but I did find a luup.call_delay in your L_SiteSensor

luup.call_delay("siteSensorRunQuery", delay, string.format("%d:%d", stamp, dev))

Which links to the following assocation in your siteSensor Implementation file

siteSensorRunQuery = SiteSensor.runQuery

So that’s where I’ll focus..

[toggledbits]

Sorry, I'm always looking at the development version, but you've followed the right trail. runQuery works the same way.

[parkerc]

Thanks @toggledbits - it’s all working now !!

My last piece is back to my other post around error handling, and how I can present that better to the user, and so for that topic, I;ll revert back to that thread.. - > https://smarthome.community/topic/777/luup-error-handling/9