Powershell Serial Control of Arduino

Write-LED.ps1

Param(
  [string]$hexColor
)
if ($hexColor.length -eq 3) {
	$hexColor = $hexColor.Substring(0,1) * 2 + $hexColor.Substring(1,1) * 2 + $hexColor.Substring(2,1) * 2
}
if ($hexColor.length -eq 6) {
	$r = 0
	$g = 0
	$b = 0
	Try {
		$r = [System.Convert]::ToByte($hexColor.Substring(0,2),16)
		$g = [System.Convert]::ToByte($hexColor.Substring(2,2),16)
		$b = [System.Convert]::ToByte($hexColor.Substring(4,2),16)
	}
	Catch {}
	
	[Byte[]] $request = 4,$r,$g,$b,10
	Write-Host $request
	
	$port = new-Object System.IO.Ports.SerialPort COM3,57600,None,8,one
	#Start-Sleep -s 1
	$port.Open()
	$port.Write($request, 0, $request.Count)
	$port.Close()
}