Initial sanitized SmartSpeaker snapshot

scripts/read_serial.ps1

@@ -0,0 +1,21 @@
+$port = New-Object System.IO.Ports.SerialPort COM5, 115200, None, 8, 1
+$port.ReadTimeout = 1000
+try {
+    $port.Open()
+    Write-Host "Reading serial port COM5..." -ForegroundColor Cyan
+    $startTime = Get-Date
+    while (((Get-Date) - $startTime).TotalSeconds -lt 15) {
+        try {
+            $line = $port.ReadLine()
+            Write-Output $line
+        } catch [TimeoutException] {
+            # normal timeout
+        }
+    }
+} catch {
+    Write-Error $_
+} finally {
+    if ($port -ne $null -and $port.IsOpen) {
+        $port.Close()
+    }
+}