We will be passing a string from MQTT that is formatted like this "0201 0141 4000 0841 1E90 0000 0000 8203 45" Right now I just have that in an inject (as a string) that goes into a function. The values are already in hex. I need to get the top to this format ["0x02","0x01","0x01","0x41","0x40","0x…

[image] jeffreys: but I am stuck on how to get from the above to this format with function code So you realise you can inject a buffer from the inject node right? But if you want to convert a string like "0201 0141 4000 0841 1E90 0000 0000 8203 45" to a buffer then you can do this... msg.ol…

Help with creating a buffer of hex bytes from a string of hex words

General

Steve-Mcl 1 July 2020 15:04 12

I've never used the USB node but so I can only help if you do the following...

Set the debug to show complete msg

image746×439 25.3 KB
Copy the data response you get and paste it (as code) into a reply
Tell me what each part should be (e.g. first 4 digits are temperature and should be 31.5 etc)

Have writing to a usb to RS-485 adapter working but how do I read back the response?

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Help with creating a buffer of hex bytes from a string of hex words

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