UWP BLE Advertising read data

Question

I send data (short string) in BLE Advertising with an iPhone and I want to read this string from a Windows device.

So I'm trying the sample project "BluetoothAdvertisement" from : https://github.com/Microsoft/Windows-universal-samples/tree/master/Samples/BluetoothAdvertisement

I see that i receive packages, I can read the localname etc... in the callBack:

 private async void OnAdvertisementReceived(BluetoothLEAdvertisementWatcher watcher, BluetoothLEAdvertisementReceivedEventArgs eventArgs)
    { }

But how can I read the string ?

Answer 1

I don't know which ways you used to add data to an Advertisement, if you are using a company-specific advertisement. I think you can get custom data section from BluetoothLEAdvertisementReceivedEventArgs ,and then query eventArgs.Advertisement.ManufacturerData to get BluetoothLEManufacturerData .

private async void OnAdvertisementReceived(BluetoothLEAdvertisementWatcher watcher, BluetoothLEAdvertisementReceivedEventArgs eventArgs)
{
    var DataList = eventArgs.Advertisement.ManufacturerData;
    foreach (var temp in DataList)
    {
        var data = new byte[temp.Data.Length];
        using (var reader = DataReader.FromBuffer(temp.Data))
        {
            reader.ReadBytes(data);
        }
        var str = Encoding.ASCII.GetString(data);
    }
}