Aug 31, 2006 For information about how to read from a serial port in an asynchronous manner in PowerShell V2, use the DataReceived event on the port object with the Register-ObjectEvent cmdlet. Jeffrey Snover MSFT. I often mess around with shell scripts. Originally, I used Linux for that – that is until I discovered the Windows 7 equivalent “PowerShell”. Now, I wanted to send some commands to a COM Serial port to my programmable Omnima LCD display. I'm extremely new to Powershell and I'm trying to figure out if I can do this: Basically I have a PC connected to a scale head via serial connection on a COM port setup as a continuous stream of data.
I need to know how I can continuously read data in from the COM port and dump it to a file using Windows Powershell. While I am reading data in, I also need to monitor the data being read in and, depending on what the last line that was read, write data to the COM port.
To open the COM port in Powershell, I am doing this:
To read data in to the COM port, I am doing this:
My initial thought was to have the main Powershell script open the COM port. Then it would start a background/child task to continuously read data in from COM port and dump it to a file. While that child task is running, the parent would then continuously monitor the file and write to the COM port when needed.
Viva pinata pc game download. When I tried to do that, the child could not read data in from the COM port because the parent had it open and the child did not inherit that permission from the parent.
Any ideas on how I can accomplish this? International drivers license in saudi arabia.
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1 Answer
Simple answer: while loop. Calling functions to decide when to write data. Use child task and scripts to handle/process/get data but keep the communication in the same task/script. I used this code to read from my Ardunio:
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