CODEWITHSUNDEEP
powershellascii
Akshay Patole
Akshay Patole

Reputation: 474

How to write ASCII code on serial port in Powershell

I am trying to send ASCII code (for ENTER, SPACE, SHIFT, F1, F2, F3 and F4 keys) serially in Powershell

port= new-Object System.IO.Ports.SerialPort COM1,115200,None,8,one
$port.open()

# Carriage return - ENTER 
$port.WriteLine("`r")
Start-Sleep -Milliseconds 500
$port.ReadExisting()

[Byte[]] $request = 13
$port.Write($request)
Start-Sleep -Milliseconds 500

$port.ReadExisting()

$port.Close()

Here in above code, I am sending Carriage Return serially. When I use WriteLine then it works but it fails when I am trying with Write.

Upvotes: 1

Views: 2703

Answers (1)

Palle Due
Palle Due

Reputation: 6292

Often CR+LF work as a command terminator on serial ports, so it probably doesn't pick up what you are doing unless you WriteLine. To send a CR+LF you should try

$port.Write("`r`n")

Upvotes: 1

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