在Windows 7上使用PowerShell捕获来自COM端口的输出

Question

I want to send Sierra AT commands to a COM port and capture the output and store it in a variable using PowerShell.

PowerShell version:

Name             : ConsoleHost
Version          : 2.0
InstanceId       : eb5987f0-9961-4842-b349-ba215d86fdfa
UI               : System.Management.Automation.Internal.Host.InternalHostUserI
                   nterface
CurrentCulture   : en-IN
CurrentUICulture : en-US
PrivateData      : Microsoft.PowerShell.ConsoleHost+ConsoleColorProxy
IsRunspacePushed : False
Runspace         : System.Management.Automation.Runspaces.LocalRunspace

For example: at!gstatus?

I tried this, but it's not working for me.

PS> [System.IO.Ports.SerialPort]::getportnames()
COM16
PS> $port= new-Object System.IO.Ports.SerialPort COM16,115200,None,8,one
PS> $port.open()
PS> $port.WriteLine("at!gstatus?")
PS> $port.WriteLine("`r")
PS> $port.ReadExisting() //getting null output
PS> $port.close()

How can this be done?

Answer 1

Modem ? COM port ? AT commands ? Is it 2015 or 1995 ? ^_^

Try with a pause before reading the data:

$port = New-Object System.IO.Ports.SerialPort COM16,115200,None,8,one
$port.Open()

$port.WriteLine( "at!gstatus?" + "`r" )
Start-Sleep -m 50

$port.ReadExisting()
$port.Close()

Source : https://social.technet.microsoft.com/Forums/en-US/2980f24e-56d1-431f-aedc-811c087b5184/powershell-serial-com-port?forum=ITCG