Help With FromSerialPort

pshearon — Mon, 25 Jul 2022 18:09:31 GMT

.NET 6 Target 10.0.22000.0 or less x64
Esri.ArcGISRuntime.WPF (100.14.1)
Esri.ArcGISRuntime.Toolkit (100.14.1)
System.IO.Ports (6.0.0)

Problem: No response after calling FromSerialPort with proper devices.

The blue-tooth devices connect properly, but I can't get any serial GPS to connect. I do not have this problem in .NET 4.8 using it's constructs (Port name).

Using this sample: https://github.com/Esri/arcgis-runtime-demos-dotnet/tree/main/src/ExternalNmeaGPS

Which also exhibits the same behavior.

Regards,
Patrick Shearon

Re: Help With FromSerialPort

dotMorten_esri — Tue, 26 Jul 2022 00:30:49 GMT

Are you setting the correct baud rate for your device?

Re: Help With FromSerialPort

pshearon — Tue, 26 Jul 2022 15:52:02 GMT

Yes, 4800.

Here is how I have it working but not using the FromSerialPort. I have to use FromStreamCreator to get it to work.

internal static async void Connect(Device device) { try { Disconnect(); gpsFile = AppDomain.CurrentDomain.BaseDirectory + @"\Offline\" + Statics.App.User.Username + "_" + DateTime.Now.ToString("MM-dd-yyyy_HH-mm-ss") + ".gpsdata"; //SERIAL PORTS if (device.IsSerialPort) { string portName = ""; using (var ser = await Windows.Devices.SerialCommunication.SerialDevice.FromIdAsync(device.DeviceInfo!.Id)) { portName = ser.PortName; } var port = new System.IO.Ports.SerialPort(portName, 4800); currentGPS = NmeaLocationDataSource.FromStreamCreator( onStart: (ds) => { try { port.Open(); return Task.FromResult(port.BaseStream); } catch (Exception ex) { return null; } }, onStop: (ds) => { try { port.Close(); return Task.CompletedTask; } catch (Exception ex) { return Task.CompletedTask; } } ); pmc.MyMapView.LocationDisplay.DataSource = currentGPS; pmc.MyMapView.LocationDisplay.IsEnabled = true; } else { //BLUETOOTH var btdevice = await Windows.Devices.Bluetooth.BluetoothDevice.FromIdAsync(device.DeviceInfo!.Id); if (btdevice is not null) { currentGPS = NmeaLocationDataSource.FromBluetooth((await btdevice.GetRfcommServicesForIdAsync(RfcommServiceId.SerialPort)).Services.First()); pmc.MyMapView.LocationDisplay.DataSource = currentGPS; pmc.MyMapView.LocationDisplay.IsEnabled = true; } } currentGPS.LocationChanged += Gps_LocationChanged; SaveSettings(device); Statics.Alert("Connecting to: " + device.Name); } catch (Exception ex) { Statics.Alert(ex.Message); } }

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Help With FromSerialPort

Re: Help With FromSerialPort

Re: Help With FromSerialPort