I have a multi part requirement that I'm trying to get implemented, and I'd be grateful for any help that the forum can give me.
We have an app which shows an html page in a webview. This page uses a local .js file in order to do things. In particular, it can call a Navigator.Geolocation object in response to a click in order to get a location, which it puts lat and long values from into text fields.
The device in question, a windows surface, has a Trimble R1 gps unit attached to it, which outputs NMEA data on a COM port. I have worked out how to listen for this data in the C# side of our code, and have given the user an option for selecting which port they wish to listen on.