Hello I have 4 sting and you will want to make a message to make a Command (sox -t mp3 SomeSong.mp3 -t wav -r 22050 -c 1 - | sudo ./pifm - 102.3) I tried the function but it does not work var newMsg = { toutp: msg.payload,toutt:msg.topic }; var le1pay; var le2pay; var le3pay; var le4pay; switch…

In a function node only the latest message is available. A solution to this is to use the Join node to combine the messages, as in this example from the cookbook. https://cookbook.nodered.org/basic/join-streams

or store them in context... var le1pay = context.get("le1pay") || 0; //get from context or default to 0 var le2pay = context.get("le2pay") || 0; //get from context or default to 0 var le3pay = context.get("le3pay") || 0; //get from context or default to 0 var le4pay = context.get("le4pay") || 0; /…

The function node has the possible disadvantage that it will send a message on each input message even if not all the topics have been received. If that mattered then the function would need additional logic.

it's better I tried but argument are not in order [Capture] sox -t mp3 -t wav -r 22050 -c 1 - | sudo ./pifm - 80 /home/pi/pifm/interferences_01.mp3 thanks to you

@Steve-Mcl What exactly would be the advantage of your solution? After all, it is inflexible and a lot to write...so whats the big benefit?

setup the join node to create a key/value object where the topic is the key

Did you consider using the template node (not the dashboard template, the core template) for building the string ? The variable part could be stored in context variables. Once you press a button in the dashboard or an inject node the flow will build the final string. the line inside the template …

thank you to you, but the node le4 is not present [Capture] thanks to you

or he could feed the result of the join node into the template node...

Show us what is coming out of the Join node. [Edit] And show us how you have configured the Join node.

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[SOLVED] Multiple inputs to one msg function (noob)

General

Stroked_Papy 14 June 2019 13:23 9

thank you to you, but the node le4 is not present

thanks to you

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[SOLVED] Multiple inputs to one msg function (noob)

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