Shimin Cai  Hi,  I am trying to get RRE and GST data from the device, but I cannot find resources about ExternalAccessory. Could you help ? Can I do without using AGSLocationDisplayDataSource. Can you show the place you use on the map? Also how does NmeaParser parse?    I would really appreciate if you can help Shimin Cai, Muruganandham Kuppan  Thanks   
						
					
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