Function question

corin.corvus · 26 November 2020 16:30

Hi,

i try to add a function in my flow.

i have 2 inputs:
playstate of my sonos speaker = msg.payload.play
powerstate of my kenwood amp = msg.payload.kenwood

I want toggle my Amp, if the playstate and powerstate are not identical.
The Flow change the inputs of the nodes to "true" and "false" for the dashboard switches.
After i changed it in numbers 1,0 for the function.

For toggle my Amp i only have one trigger with a http request to an arduino IR Remote.

Second:
if i pause or stop the Sonos Playstate, the amp should not switch immediately

May you help me?

Thanks

My function is:

var m_out=[];
var play=msg.payload.play;
var kenwood=msg.payload.kenwood;

if (play !== kenwood){
    m_out = {payload:1}
} else null;

return msg;

Flow:

[{"id":"7c9b27df.0bc7d8","type":"tab","label":"Kenwood","disabled":false,"info":""},{"id":"5df92dda.dfb934","type":"http request","z":"7c9b27df.0bc7d8","name":"","method":"GET","ret":"txt","paytoqs":false,"url":"http://10.2.0.65/ir?code=501397830","tls":"","persist":false,"proxy":"","authType":"","x":1190,"y":300,"wires":[[]]},{"id":"367ccdfb.1ecbd2","type":"mqtt in","z":"7c9b27df.0bc7d8","name":"","topic":"shellies/shelly-wohnzimmer-kenwood/relay/0/power","qos":"0","datatype":"auto","broker":"8aa7c4c7.b6d308","x":250,"y":300,"wires":[["26017241.60409e"]]},{"id":"26017241.60409e","type":"switch","z":"7c9b27df.0bc7d8","name":">= 10 <= 10","property":"payload","propertyType":"msg","rules":[{"t":"gte","v":"10","vt":"str"},{"t":"lte","v":"10","vt":"str"}],"checkall":"true","repair":false,"outputs":2,"x":570,"y":300,"wires":[["60a41f75.b66858"],["fdf91316.f38878"]]},{"id":"60a41f75.b66858","type":"change","z":"7c9b27df.0bc7d8","name":"An","rules":[{"t":"delete","p":"payload","pt":"msg"},{"t":"set","p":"payload","pt":"msg","to":"true","tot":"bool"},{"t":"set","p":"topic","pt":"msg","to":"kenwood","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":750,"y":280,"wires":[["145376e3.77b791","dd123a68.ad29e"]]},{"id":"fdf91316.f38878","type":"change","z":"7c9b27df.0bc7d8","name":"Aus","rules":[{"t":"delete","p":"payload","pt":"msg"},{"t":"set","p":"payload","pt":"msg","to":"false","tot":"bool"},{"t":"set","p":"topic","pt":"msg","to":"kenwood","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":750,"y":320,"wires":[["145376e3.77b791","dd123a68.ad29e"]]},{"id":"f6ba6b85.8e56c","type":"comment","z":"7c9b27df.0bc7d8","name":"Schalter Kenwood Anlage","info":"","x":150,"y":40,"wires":[]},{"id":"ebbbb832.a8e74","type":"change","z":"7c9b27df.0bc7d8","name":"AN","rules":[{"t":"delete","p":"payload","pt":"msg"},{"t":"set","p":"payload","pt":"msg","to":"true","tot":"bool"}],"action":"","property":"","from":"","to":"","reg":false,"x":570,"y":100,"wires":[["5a81caf4.f5dbf4"]]},{"id":"7d3519c8.f761c8","type":"switch","z":"7c9b27df.0bc7d8","name":"","property":"payload","propertyType":"msg","rules":[{"t":"eq","v":"playing","vt":"str"},{"t":"eq","v":"paused","vt":"str"},{"t":"eq","v":"stopped","vt":"str"}],"checkall":"true","repair":false,"outputs":3,"x":370,"y":120,"wires":[["ebbbb832.a8e74"],["bbd4a08f.eda1a"],["bbd4a08f.eda1a"]]},{"id":"bbd4a08f.eda1a","type":"change","z":"7c9b27df.0bc7d8","name":"AUS","rules":[{"t":"delete","p":"payload","pt":"msg"},{"t":"set","p":"payload","pt":"msg","to":"false","tot":"bool"}],"action":"","property":"","from":"","to":"","reg":false,"x":570,"y":140,"wires":[["5a81caf4.f5dbf4"]]},{"id":"5a81caf4.f5dbf4","type":"ui_switch","z":"7c9b27df.0bc7d8","name":"","label":"Playstate","tooltip":"","group":"87b21765.57daa8","order":12,"width":0,"height":0,"passthru":true,"decouple":"false","topic":"","style":"","onvalue":"true","onvalueType":"bool","onicon":"","oncolor":"","offvalue":"false","offvalueType":"bool","officon":"","offcolor":"","x":740,"y":120,"wires":[["319eb34a.a9f5dc"]]},{"id":"adce622b.eefea","type":"link in","z":"7c9b27df.0bc7d8","name":"Sonos Playstate Wohnzimmer","links":["8026b813.baa0b"],"x":235,"y":120,"wires":[["7d3519c8.f761c8"]]},{"id":"d5746361.9c5248","type":"debug","z":"7c9b27df.0bc7d8","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","x":1650,"y":180,"wires":[]},{"id":"145376e3.77b791","type":"ui_switch","z":"7c9b27df.0bc7d8","name":"","label":"Kenwood Anlage","tooltip":"","group":"87b21765.57daa8","order":11,"width":0,"height":0,"passthru":false,"decouple":"true","topic":"","style":"","onvalue":"true","onvalueType":"bool","onicon":"","oncolor":"","offvalue":"false","offvalueType":"bool","officon":"","offcolor":"","x":950,"y":300,"wires":[["5df92dda.dfb934"]]},{"id":"319eb34a.a9f5dc","type":"change","z":"7c9b27df.0bc7d8","name":"","rules":[{"t":"move","p":"payload","pt":"msg","to":"payload.play","tot":"msg"}],"action":"","property":"","from":"","to":"","reg":false,"x":960,"y":120,"wires":[["186cecfe.5ba32b"]]},{"id":"dd123a68.ad29e","type":"change","z":"7c9b27df.0bc7d8","name":"","rules":[{"t":"move","p":"payload","pt":"msg","to":"payload.kenwood","tot":"msg"}],"action":"","property":"","from":"","to":"","reg":false,"x":960,"y":240,"wires":[["186cecfe.5ba32b"]]},{"id":"186cecfe.5ba32b","type":"change","z":"7c9b27df.0bc7d8","name":"","rules":[{"t":"set","p":"topic","pt":"msg","to":"switch","tot":"str"},{"t":"change","p":"payload.play","pt":"msg","from":"true","fromt":"bool","to":"1","tot":"num"},{"t":"change","p":"payload.play","pt":"msg","from":"false","fromt":"bool","to":"0","tot":"num"},{"t":"change","p":"payload.kenwood","pt":"msg","from":"true","fromt":"bool","to":"1","tot":"num"},{"t":"change","p":"payload.kenwood","pt":"msg","from":"false","fromt":"bool","to":"0","tot":"num"}],"action":"","property":"","from":"","to":"","reg":false,"x":1220,"y":180,"wires":[["78496e03.fe4d18"]]},{"id":"78496e03.fe4d18","type":"function","z":"7c9b27df.0bc7d8","name":"","func":"var m_out=[];\nvar play=msg.payload.play;\nvar kenwood=msg.payload.kenwood;\n\nif (play !== kenwood){\n    m_out = {payload:1}\n} else null;\n\nreturn msg;","outputs":1,"noerr":0,"x":1430,"y":180,"wires":[["d5746361.9c5248"]]},{"id":"8aa7c4c7.b6d308","type":"mqtt-broker","z":"","name":"Mosquitto","broker":"10.0.0.171","port":"1883","clientid":"","usetls":false,"compatmode":false,"keepalive":"60","cleansession":true,"birthTopic":"","birthQos":"0","birthPayload":"","closeTopic":"","closeQos":"0","closePayload":"","willTopic":"","willQos":"0","willPayload":""},{"id":"87b21765.57daa8","type":"ui_group","z":"","name":"Main","tab":"7c6fa6e7.e5b808","order":1,"disp":true,"width":8,"collapse":false},{"id":"7c6fa6e7.e5b808","type":"ui_tab","z":"","name":"Home","icon":"dashboard","order":1,"disabled":false,"hidden":false}]

Steve-Mcl · 26 November 2020 16:36

Messages never arrive at the same time so you need to either store the values or use a join node.

See this article in the cookbook for an example of how to join messages into one object.

corin.corvus · 26 November 2020 17:01

Thank you.

now the Inputs come at the same time.

I stuck in the function:
var play=msg.payload.play;
var kenwood=msg.payload.kenwood;

if (play !== kenwood){
???????
} else null;

return msg;

Steve-Mcl · 26 November 2020 17:05

yeah - ok - so what are you trying to do?

if you want to halt the flow of a msg, you can return null...

var play=msg.payload.play;
var kenwood=msg.payload.kenwood;

if (play !== kenwood){
  //what do you want to happen here?
  msg.payload = 1;   //e.g. set msg.payload?
} else {
  //return null to stop the msg travelling to next node
  return null;
}

return msg; //send msg to next node by returning the msg.

corin.corvus · 26 November 2020 17:27

play can be: true/false
kenwood can be true/false
(i can change it in numbers if easier)

if play and kenwood are both true, do nothing
if play and kenwood are both false, do nothing
if play true and kenwood false, trigger next steps
if play false and kenwood true, trigger next steps

next step is a single node with http request to toggle the kenwood amp power (on and off)
the variable "kenwood" is a shelly plug s with power Measurement over mqtt. unter 10 watt is off/false, over 10 watt is on/true

Steve-Mcl · 26 November 2020 17:33

var play=msg.payload.play;
var kenwood=msg.payload.kenwood;

// if play and kenwood are both true, do nothing
if (play == true && kenwood == true) return null; //do nothing

// if play and kenwood are both false, do nothing
if (play == false && kenwood == false) return null; //do nothing

// if play true and kenwood false, trigger next steps
// if play false and kenwood true, trigger next steps
return msg; //send msg to next node by returning the msg.

Colin · 26 November 2020 17:51

Or

if (play == kenwood) msg = null
return msg

corin.corvus · 26 November 2020 17:55

It works now!
Thank you @Steve-Mcl and @Colin for the second option

system · 10 December 2020 17:55

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Function question

Thanks

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