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42 lines
1.4 KiB
42 lines
1.4 KiB
5 years ago
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# Usage:
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#
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# > find-device-port-cygwin.ps1 '1209' '2300' -Format COM
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# COM7
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# > find-device-port-cygwin.ps1 '1209' '2300' -Format WSL
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# /dev/ttyS7
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# > find-device-port-cygwin.ps1 '1209' '2300' -Format Cygwin
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# /dev/ttyS6
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Param(
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[string]$VendorID,
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[string]$ProductID, # Careful; $PID is a different builtin
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[ValidateSet('COM','Cygwin','WSL')][string]$Format
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)
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$DeviceParametersRegKey = @(Get-ChildItem -ErrorAction SilentlyContinue -Recurse 'HKLM:\SYSTEM\CurrentControlSet\Enum' |
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Where-Object Name -match "VID_$VendorID&PID_$ProductID" |
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Where-Object Property -eq PortName)
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if ($DeviceParametersRegKey.Count -eq 0) {
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throw "Could not find any devices matching VID $VendorID and PID $ProductID which were mapped to a COM port"
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}
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if ($DeviceParametersRegKey.Count -ge 2) {
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throw "More than one devices matching VID $VendorID and PID $ProductID were found mapped to a COM port"
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}
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# This will be of form 'COM6'
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$COMPortName = ($DeviceParametersRegKey | Get-ItemProperty).PortName
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$COMPortNumber = [int]$COMPortName.Substring(3)
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if ($Format -eq 'COM') {
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$Output = $COMPortName
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} elseif ($Format -eq 'WSL') {
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$Output = "/dev/ttyS$COMPortNumber"
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} elseif ($Format -eq 'Cygwin') {
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$CygwinPortNumber = $COMPortNumber - 1
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$Output = "/dev/ttyS$CygwinPortNumber"
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}
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# "-NoNewline" below is important to prevent bash from seeing an extra trailing '\r'
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Write-Host -NoNewline $Output
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