To retrieve NMEA Sentences from NMEA COM PORT And Get the Latitude and Longitude

Question

Hello All!!!!!!!

According to QCWWAN Connection Manager API for Gobi 2000, we have implemented Position Determination Service(PDS) functions and call back functions.
To find out the GPS location data, Application will detect NMEA COM Port and then retrieve NMEA Senstences through NMEA COM Port.
Then Application parses the  NMEA Strings into meaningful data ie the current latitude and longitude of the GPS hardware.


We need one sample application how they are retrieving NMEA sentences through NMEA COM port.

Thanking  You all in Advance

Best
arjun.tgm

Answer 1

Hi Arjun,

    Thank you for your interest in developing GPS applications. The Windows 7 Sensor and Location API is designed to work independently of NMEA COM ports and prevents the need to parse NMEA sentences. It provides a strongly typed C++ interface to retrieve location updates. You can see from here: http://msdn.microsoft.com/en-us/library/dd317747(VS.85).aspx how to retrieve the location without binding to a NMEA COM port.

The Sensor and Location Platform does not provide a facility to handle NMEA COM Ports; if you'd like to utilize them for legacy GPS drivers, you will need to follow-up with the documentation that QCWWAN Connection Manager API for Gobi 2000 provides regarding this.

Cheers,
   Alec

Answer 2

I 've created today a UMDF driver that maps NMEA strings to an ISensor interface; See forum root for details.

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Michael