Hello i'm new to Node Red , i'm working with a Lora Gps Hat. i have raspberry C code to send Data and another to receive data . the Lora hat can't be receiving and emitting at the same time i have tested the exec Node to send data it's working perfectly and i used a daemon Node to receive data a…

The daemon node can auto restart after being stopped. So you could kill it. Do the transmit an let it restart

Thanks for the answer , but it will launch straight after sending this to it to its input . delete msg.payload; msg.kill="SIGKILL"; return msg;. . there isn't a delay to launch it when it has an error ..

[image] HilalAlHakani1: the Lora hat can't be receiving and emitting at the same time You'll have to forgive my ignorance I have no idea what a lora hat is. But ... I don't understand what you mean when you say can't be receiving and sending at same time & therefore you have 2 C applications? …

Dear Steve , Thanks for reaching out , Lora is a type of modulation (Physical layer in the Osi Model) to send and receive data over large distance with minimum power .. the Lora hat is a board with an antenna that gets plugged to the raspbery Pi that supports Lora . i'm using this code https://git…

So that code it seems is written to read command line and based on the command line arg, operate exclusively as a sender or receiver. I see no reason why you can't switch between these modes without quitting (obviously some modifications to code & testing would be required). Additionally, at a qui…

thanks for your help i'll see what i will do

By default the daemon node has a 10 second pause before restarting. So if you kill it it should give you time to fire your transmit.

it doesn't get killed i sent a function with the parameters below msg.kill = "SIGHUP"; return msg; it keeps running even though it shows an error

There have been some changes to the way exec works since this thread, please start a new thread with more details of what you are doing and what the problem is.

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How to stop an exec Node, run another exec Node and when it's finished rerun the first

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Sandy 5 November 2020 07:21 10

I am facing the same issue, Help me Out to return the msg.kill...

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How to stop an exec Node, run another exec Node and when it's finished rerun the first

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