How to make a light blink? And ToggleState info

cw-kid · November 16, 2020, 10:38pm

Anyone have a quick solution for me to make a light blink on and off a few times ?

I was using IFTTT to blink my Hue Lights but its stopped working.

I just want a visual indication when I run my Away scene, if the Google TTS doesn’t work and tell me its ran the scene etc.

LUA code preferred.

Thanks.

rigpapa · November 16, 2020, 10:22pm

There was a thread back in the old forums that discussed this, but to save everyone the formatting that didn’t make it over (and thus makes unusable code), in scene Lua:

device = 8 -- device number to blink
count = 10 -- number of times to blink
rate = 2 -- number of seconds between blinks

function blink_on()
    luup.call_action( "urn:upnp-org:serviceId:SwitchPower1", "SetTarget", { newTargetValue="1" }, device )
    luup.call_delay( 'blink_off', rate )
end
function blink_off()
    luup.call_action( "urn:upnp-org:serviceId:SwitchPower1", "SetTarget", { newTargetValue="0" }, device )
    count = count - 1
    if count > 0 then
        luup.call_delay( 'blink_on', rate )
    end
end

-- Start blinking
blink_on()

Keep in mind that the blink rate has two limiting factors:

The delay is an integer;
Luup’s ZWave implementation probably can’t reliably handle it any faster than #1 allows anyway.

cw-kid · November 16, 2020, 8:49pm

Thank you I will give it a try later.

cw-kid · November 16, 2020, 9:53pm

I’m trying to blink a Philips Hue bulb in a lamp, I’m using the AltHue plugin.

I had to change the URN to SwitchPower1 as BinaryLight1 didn’t seem to work.

This code does blink the lamp on and off but I don’t think the count is working fully it doesn’t blink 10 times. The lamp goes on and off about 4 times. The rate is much slower than 2 seconds also.

But its good enough for what I need.

Patrick do you think it would be possible to take in to account the starting status of the lamp if it was on or off to begin with? And after the blink code return that lamp to its prior on or off status?

With the code as is, if the lamp was already ON to begin with after the blinking the lamp then remains OFF.

If the lamp was OFF to begin with after the blinking it is still OFF.

Or is it just chance on how many blinks you have set and what the starting state of the lamp was.

device = 379 -- device number to blink
count = 10 -- number of times to blink
rate = 2 -- number of seconds between blinks

function blink_on()
    luup.call_action( "urn:upnp-org:serviceId:SwitchPower1", "SetTarget", { newTargetValue="1" }, device )
    luup.call_delay( 'blink_off', rate )
end
function blink_off()
    luup.call_action( "urn:upnp-org:serviceId:SwitchPower1", "SetTarget", { newTargetValue="0" }, device )
    count = count - 1
    if count > 0 then
        luup.call_delay( 'blink_on', rate )
    end
end

-- Start blinking
blink_on()

cw-kid · November 16, 2020, 10:06pm

I’ve got a little RGB globe lamp in the lounge, that is IR and controlled by the Harmony plugin and a virtual switch device in Vera.

That switches on and off much faster and does actually turn on and off 10 times or what ever number I specify for the count correctly.

I think I will use this light instead as my visual indicator, to show me the Away scene has ran.

Thanks

rigpapa · November 16, 2020, 10:26pm

My bad! Your change is correct, and I changed mine as well to avoid confusion.

Yeah, although the easiest way to do that would be to use the ToggleState action (in service urn:micasaverde-com:serviceId:HaDevice1, although that isn’t always supported by all devices, apparently (e.g. the Fibaro device referred to elsewhere today… always Fibaro. What the heck?).

If ToggleState works, you only need one function; just blink an even number of times and you’ll end up back where you started…

device = 379 -- device number to blink
count = 10 -- number of times to blink
rate = 2 -- number of seconds between blinks

function blink()
    luup.call_action( "urn:micasaverde-com:serviceId:HaDevice1", "ToggleState", {}, device )
    count = count - 1
    if count > 0 then
        luup.call_delay( 'blink', rate )
    end
end

-- Start blinking
blink()

cw-kid · November 16, 2020, 10:32pm

OK thanks, I will try the new code on some other lights tomorrow, that might be useful for the doorbell scene, to have some lights blink but go back to their original state afterwards.

That’s what I was using the Hue blink for on IFTTT with my doorbell scene but it stopped working.

I have all Fibaro Dimmer 2’s for my ceiling lights, they support ToggleState OK.

Certain versions of the Fibaro Roller Shutter module don’t work with ToggleState however. I have one Roller Shutter that works with ToggleState and another Roller Shutter that does not.

cw-kid · November 16, 2020, 10:36pm

For others reading this thread, for devices that don’t support ToggleState like the just mentioned Fibaro Roller Shutter module, I have used this LUA code for a toggle:

local device=75
local switchOnOff = luup.variable_get("urn:upnp-org:serviceId:SwitchPower1", "Status", device)
    if (switchOnOff == "1") then
      -- Switch is on
luup.call_action("urn:upnp-org:serviceId:Dimming1", "SetLoadLevelTarget", {newLoadlevelTarget = "0"}, device)
else 
luup.call_action("urn:upnp-org:serviceId:Dimming1", "SetLoadLevelTarget", {newLoadlevelTarget = "100"}, device)
end

I think I also had to use similar code for my Philips Hue bulbs in the side lamps to have a toggle scene for them.

I mainly use toggle scenes so you can use just one button on a scene controller device such as my Aeotec Minimotes.

Crille · November 16, 2020, 10:41pm

Just to educate myself, isn’t variables and functions preferred to be declared as local when not needed elsewhere?

rigpapa · November 16, 2020, 11:04pm

The variables can be local, but the function cannot. The way that luup.delay() works, you pass it a function name, and it can only look for that function in global scope. This was a poor implementation choice on their part, and something they could probably easily fix without breaking any existing code, but it hasn’t happened. Ideally, anything that uses a callback would take a function reference, which would allow you to use a global or local function, or even a closure (like an anonymous function in other languages).

Crille · November 16, 2020, 11:16pm

Ah, yes. I remember I read something about that now that you mention it. Thank you for the explanation!

therealdb · November 17, 2020, 5:56am

Yep, AltHue is not very fast to detect changes. Since it’s polling, it will detect the off after some time.

I have a scene controller in my office for some hue lights and I fail to turn one off, I have to wait a couple of seconds to turn it on again (I’m using toggle estate). So, definitely reproducible on my part too.

akbooer · November 17, 2020, 8:48am

Perhaps neater to write:

local device=75
local switchOnOff = luup.variable_get("urn:upnp-org:serviceId:SwitchPower1", "Status", device)
local on_off = (switchOnOff == "1") and "0" or "100"
luup.call_action("urn:upnp-org:serviceId:Dimming1", "SetLoadLevelTarget", {newLoadlevelTarget = on_off}, device)

ElCid · November 17, 2020, 1:39pm

Ok here is my effort.

function light_Toggle(data) 
    luup.call_action("urn:upnp-org:serviceId:SwitchPower1", "SetTarget", {newTargetValue = string.sub(data,1,1)}, string.sub(data,2))
end

local blinks = 2
local device = 10008
local rate = 1

local swStatus = '0'
local onOff = luup.variable_get("urn:upnp-org:serviceId:SwitchPower1", "Status", device)
for i = 1,(blinks*2),1 do
    if (i + tonumber(onOff)) % 2 == 0 then swStatus = '0' else swStatus ='1' end
        luup.call_delay('light_Toggle', ((i-1)*rate), (swStatus .. tostring(device)))
        --print(i*rate, swStatus) 
end
return true