Start-ComDeviceNotifier.ps1

<#
    .SYNOPSIS
    Runs an event subsriber to notify when a new COM device is available

    .DESCRIPTION
    When the script is running, when you plug (or unplug) a COM device, 
    a notification will pop, telling you a COM device has been plug and what is name is

    .INPUTS
    None.

    .OUTPUTS
    None.

    .NOTES
    Uses the module BurntToast to display notification within the notification system of Windows 10

    .NOTES
    The COM Port logo comes from the serialport project website, MIT Licensed
    https://github.com/serialport/website/blob/master/website/static/img/node-serialport-logo-small.svg


#>
[CmdletBinding()]
param (
    # All Device Events
    [Parameter()]
    [switch]
    $AllComDeviceEvent
)
Import-Module BurntToast

$BTHeader = New-BTHeader -Id "ComDeviceNotifier" -Title "Com Device Notifier"

$scriptPath = split-path -parent $MyInvocation.MyCommand.Definition
$NotificationSplat = @{
    Header  = $BTHeader
    AppLogo = $(Join-Path -Path $scriptPath -ChildPath "comlogo.png" )
    Silent  = $true
}
New-BurntToastNotification @NotificationSplat -Text "ComDeviceNotifier Started"

$Action = [scriptblock] {
    param (
        # 
        [Parameter(Position = 0)]
        [object]
        $UselessCimIndicationWatcher,
        # Parameter help description
        [Parameter(Position = 1)]
        [Microsoft.Management.Infrastructure.CimCmdlets.CimIndicationEventInstanceEventArgs]
        $EventInstanceEventArgs
    )
    
    
    switch ($EventInstanceEventArgs.NewEvent.PSTypeNames[0]) {
        "Microsoft.Management.Infrastructure.CimInstance#root/CIMV2/__InstanceCreationEvent" {
            #'Device Arrival' 
            $EventInstanceEventArgs.NewEvent.TargetInstance.Name -match '(?<Name>COM\d)'
            $ComPort = $Matches.Name
            $NotificationSplat.Text = "$ComPort appeared"
        }
        "Microsoft.Management.Infrastructure.CimInstance#ROOT/cimv2/__InstanceDeletionEvent" {
            # 'Device Removal'
            $EventInstanceEventArgs.NewEvent.TargetInstance.Name -match '(?<Name>COM\d)'
            $ComPort = $Matches.Name
            $NotificationSplat.Text = "$ComPort disappeared"
        }
        default { 
            if ($AllComDeviceEvent) {
                $EventInstanceEventArgs.NewEvent.TargetInstance.Name -match '(?<Name>COM\d)'
                $ComPort = $Matches.Name
                $NotificationSplat.Text = "Something happened to $ComPort. You can probably ignore this"
            }
        }
    }

    New-BurntToastNotification @NotificationSplat
}

$query = "Select * FROM __InstanceOperationEvent within 1 where targetInstance isa 'Win32_PnPEntity' and TargetInstance.PNPClass like 'Ports'"
Register-CimIndicationEvent -Query $query -Action $Action -SourceIdentifier "ComDeviceNotifier" | Out-Null

function Stop-ComDeviceNotifier {
    param (    )
    Unregister-Event -SourceIdentifier "ComDeviceNotifier"
    New-BurntToastNotification @NotificationSplat -Text "ComDeviceNotifier Stopped"
}
try {
    while ($true) {
        Wait-Event -Timeout 1
    }
}
catch {
    
}
finally {
    Stop-ComDeviceNotifier
}