Method FromAccessory

FromAccessory(EAAccessory, String)

Creates a NMEA LocationDataSource based on an iOS ExternalAccessory.EAAccessory.

Declaration
public static NmeaLocationDataSource FromAccessory(EAAccessory accessory, string protocol)
Parameters
Type Name Description
ExternalAccessory.EAAccessory accessory

The accessory to read NMEA from.
System.String protocol

The accessory protocol used to read data. See ExternalAccessory.EAAccessory.ProtocolStrings for a list of supported strings on the accessory.
Returns
Type Description
NmeaLocationDataSource

A NMEA Location Datasource that reads from the specified accessory
Remarks

The created datasource will automatically handle opening the specified accessory and reading data from it when the datasource is started. Once the datasource has been started, the NmeaDataStream will be available.

To use the device in an iOS app, ensure the device is supported and enabled in Info.plist. For example this is required to enable support for a Bad Elf GPS receiver: 

  <key>UISupportedExternalAccessoryProtocols</key>
  <array>
    <string>com.bad-elf.gps</string>
  </array>

To obtain a supported accessory use the ExternalAccessory.EAAccessoryManager.ConnectedAccessories property and search by name: 

foreach (var accessory in ExternalAccessory.EAAccessoryManager.SharedAccessoryManager.ConnectedAccessories)
{
   if (accessory.Name == "Bad Elf GNSS Surveyor")
   {
       return NmeaLocationDataSource.FromAccessory(accessory, "com.bad-elf.gps");
   }
}

Applies to

Platforms and versions
TargetVersions
.NET iOS200.0 - 200.6
Xamarin.iOS100.10 - 100.15