show Bluetooth adapter capabilities

bluetooth.ps1

# Bluetooth Peripheral Mode Checker

# to execute powershell scripts, you might need to enable this first:
# Set-ExecutionPolicy -ExecutionPolicy Bypass -Scope Process

Write-Host "=== Bluetooth Peripheral Mode Checker ===" -ForegroundColor Cyan
Write-Host ""

# Check for Bluetooth adapters
$usbBT = Get-PnpDevice -Class Bluetooth | Where-Object {$_.InstanceId -match "USB\\" -and $_.Status -eq "OK"}
if (-not $usbBT) {
    Write-Host "No USB Bluetooth adapters found!" -ForegroundColor Red
    return
}

Write-Host "Found USB Bluetooth adapter(s):" -ForegroundColor Green
$usbBT | ForEach-Object { Write-Host "  - $($_.FriendlyName)" -ForegroundColor Cyan }
Write-Host ""

# Method that actually works in PowerShell
Write-Host "Checking Bluetooth capabilities..." -ForegroundColor Yellow

Add-Type -AssemblyName System.Runtime.WindowsRuntime
$asTaskGeneric = ([System.WindowsRuntimeSystemExtensions].GetMethods() | Where-Object {
    $_.Name -eq 'AsTask' -and 
    $_.GetParameters().Count -eq 1 -and 
    $_.GetParameters()[0].ParameterType.Name -eq 'IAsyncOperation`1'
})[0]

Function Await($WinRtTask, $ResultType) {
    $asTask = $asTaskGeneric.MakeGenericMethod($ResultType)
    $netTask = $asTask.Invoke($null, @($WinRtTask))
    $netTask.Wait(-1) | Out-Null
    $netTask.Result
}

try {
    # Load the Bluetooth type
    $null = [Windows.Devices.Bluetooth.BluetoothAdapter,Windows.Devices,ContentType=WindowsRuntime]
    
    # Get default adapter
    $asyncOp = [Windows.Devices.Bluetooth.BluetoothAdapter]::GetDefaultAsync()
    $adapter = Await $asyncOp ([Windows.Devices.Bluetooth.BluetoothAdapter])
    
    if ($adapter) {
        Write-Host ""
        Write-Host "Adapter Information:" -ForegroundColor Green
        Write-Host "===================" -ForegroundColor Green
        Write-Host "Device ID: $($adapter.DeviceId)"
        $macAddr = '{0:X12}' -f $adapter.BluetoothAddress
        Write-Host "MAC Address: $($macAddr -replace '(.{2})(?!$)', '$1:')"
        
        Write-Host ""
        Write-Host "Capabilities:" -ForegroundColor Yellow
        Write-Host "=============" -ForegroundColor Yellow
        
        # The important property
        $peripheralSupported = $adapter.IsPeripheralRoleSupported
        $centralSupported = $adapter.IsCentralRoleSupported
        $classicSupported = $adapter.IsClassicSupported
        $leSupported = $adapter.IsLowEnergySupported
        
        Write-Host "Peripheral Role Supported: " -NoNewline
        if ($peripheralSupported) {
            Write-Host "YES" -ForegroundColor Green -BackgroundColor DarkGreen
        } else {
            Write-Host "NO" -ForegroundColor Red -BackgroundColor DarkRed
        }
        
        Write-Host "Central Role Supported: " -NoNewline
        if ($centralSupported) {
            Write-Host "YES" -ForegroundColor Green
        } else {
            Write-Host "NO" -ForegroundColor Red
        }
        
        Write-Host "Classic Bluetooth: " -NoNewline
        if ($classicSupported) {
            Write-Host "YES" -ForegroundColor Green
        } else {
            Write-Host "NO" -ForegroundColor Red
        }
        
        Write-Host "Bluetooth LE: " -NoNewline
        if ($leSupported) {
            Write-Host "YES" -ForegroundColor Green
        } else {
            Write-Host "NO" -ForegroundColor Red
        }
        
        Write-Host ""
        Write-Host "======================================" -ForegroundColor DarkGray
        if ($peripheralSupported) {
            Write-Host " RESULT: Peripheral mode IS supported " -ForegroundColor Black -BackgroundColor Green
            Write-Host "======================================" -ForegroundColor DarkGray
            Write-Host "This adapter can act as a BLE peripheral (GATT Server)" -ForegroundColor Green
        } else {
            Write-Host " RESULT: Peripheral mode NOT supported " -ForegroundColor White -BackgroundColor DarkRed
            Write-Host "======================================" -ForegroundColor DarkGray
            Write-Host "This adapter can only act as central/client" -ForegroundColor Red
        }
    } else {
        Write-Host "No Bluetooth adapter could be accessed" -ForegroundColor Red
        Write-Host "Make sure Bluetooth is enabled in Windows Settings" -ForegroundColor Yellow
    }
} catch {
    Write-Host "Error: $($_.Exception.Message)" -ForegroundColor Red
    Write-Host ""
    Write-Host "Make sure:" -ForegroundColor Yellow
    Write-Host "- Bluetooth is enabled in Windows Settings"
    Write-Host "- You're running Windows 10 version 1703 or later"
    Write-Host "- The Bluetooth adapter is properly installed"
}

# Windows version check
Write-Host ""
Write-Host "System Information:" -ForegroundColor Yellow
$build = [System.Environment]::OSVersion.Version.Build
Write-Host "Windows Build: $build"
if ($build -ge 15063) {
    Write-Host "Windows version supports BLE peripheral (1703+)" -ForegroundColor Green
} else {
    Write-Host "Windows version too old for peripheral mode" -ForegroundColor Red
}