Sending character or string through Command prompt

[sanka1p]

Hi All,

I am trying to send a string for example "BB" just BB through CMD of windows 11. I looked it up on internet and couldn't find anything that worked for me. I specifically tried this command "set /p x="BB" <nul >\\.\COM17" and it didnt work as I didn't receive any thing on the other side. I did set the Baud rate before trying this command. Please let me know, if someone knows any commands that works. Thank you.

[xrunner]

Why don't you just get a simple serial terminal program like termite?

[oPossum]

echo test >\\.\COM17

[pickle9000]

don't forget to use mode to open the port first

[sanka1p]

Why don't you just get a simple serial terminal program like termite?

That’s the whole point of doing this. Don’t want to use any special application.

[sanka1p]

echo test >\\.\COM17

tried this too. Didn’t work

[sanka1p]

don't forget to use mode to open the port first

used mode to set the baud rate, parity and stop bit for this com port

[50ShadesOfDirt]

I haven't needed to do this (write to com port from cli), so didn't have the commands at hand ... some quick googling yields things like:

  mode com1: baud=9600 data=8 parity=n stop=1
  copy con com1
  alt+18alt+2ctrl+z

I use this form of filesystems pathing at times, and it is something like:
  dir \\.\C:\temp
so, you might be able to construct something like:
  echo test > \\.\COM17\

If you are open to using powershell at the command line of a CMD shell, then perhaps this:
  https://learn.sparkfun.com/tutorials/terminal-basics/command-line-windows-mac-linux

All of this requires an effort to learn more about the historical way it was done in dos (precursor to windows shells), and all the newer ways up to and including the CMD shell in the latest versions of windows, and/or the Powershell way of things at the CMD prompt.

If you don't want to go down *that* learning path, then I hope the above gets you closer ... again, google the crap out of it ...