The NMEA protocol is extremely simple, with messages transmitted in plain ASCII text in the form of "sentances". These devices emerged in the days when serial ports were the primary means of interacting with computer systems, and as such even modern devices with only USB connectors still provide NMEA output via a virtual COM port by embedding a USB-to-serial adapter internally. NMEA stands for the National Mareine Electronics Association, and standard 0183 defines a communication protocol for marine devices such as sonar, echosounders, GPS receivers, and its predecessor, LORAN. Both a 32-bit and 64-bit driver are provided.Īlmost all general purpose GPS units are capable of emitting NMEA 0183 sentances over a serial port. Though this software was originally created for the Windows 7 Sensor API, it also works with the Windows 8 Location API for both Windows Store Apps and desktop applications. It takes any COM-connected GPS receiver and turns it into a Windows Location Sensor.
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Using an Android smartphone as a GPS receiver Part 1: Introducing GPSDirectįor our GPS solutions we’ll make use of the GPSDirect NEMA Sensor Driver which was developed by Michael Chourdakis at TurboIRC.COM Software & Research. In parts two and three, we’ll look at connecting an external GPS recevier and an Android-based smart phone as a GPS provider.
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In part one, we’ll introduce the GPSDirect sensor driver and learn how to use it. What I want to do now is explore this method in greater detail, and I’m creating a three-part series on doing so with a software application called GPSDirect from TurboIRC.COM Software & Research. In an earlier blog post titled " Develop location-aware, Metro style apps when your development system doesn’t have GPS", one option I presented for those wishing to develop high-precision location-based Windows Store apps is to hook up an external GPS to your computer.
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