Add setup-piForHeadlessConfig.ps1

Script to automate the process of preparing the Pi to listen for SSH connections over USB.

windows_archive/setup-piForHeadlessConfig.ps1

@@ -0,0 +1,31 @@
+[CmdletBinding()]
+Param
+(
+    [Parameter(Mandatory=$True,Position=1)]
+    [string]$driveLetter
+)
+
+$drivePath="${driveLetter}:"
+$configPath = "$drivePath\config.txt"
+$cmdlinePath = "$drivePath\cmdline.txt"
+$sshPath = "$drivePath\ssh"
+
+if ((![System.IO.File]::Exists($configPath) -or
+    (![System.IO.File]::Exists($cmdlinePath)))) {
+    Write-Error "Didn't find cmdline.txt and config.txt on drive $drivePath."
+    exit 1
+}
+
+Write-Verbose "Updating $configPath ..."
+
+"" | Out-File -FilePath $configPath -Append -Encoding utf8
+"dtoverlay=dwc2" | Out-File -FilePath $configPath -Append -Encoding utf8
+
+Write-Verbose "Updating $cmdlinePath ..."
+$cmdlinetxtContent = gc -Raw $cmdlinePath
+$cmdlinetxtContent.Replace("rootwait", "rootwait modules-load=dwc2,g_ether") | Out-File -FilePath $cmdlinePath -Encoding utf8
+
+Write-Verbose "Enabling SSH ..."
+[System.IO.File]::CreateText($sshPath).Dispose()
+
+Write-Verbose "All done."