uBlox GPS Module Reader

This repository contains a simple C# application that reads GPS data from a uBlox GPS module via a serial port. It processes the GPS NMEA sentences, particularly $GPGGA and $GPRMC, and converts the raw latitude and longitude values into decimal degrees.

Requirements

• .NET Framework SDK
• A uBlox GPS module connected via a serial port (e.g., COM5)
• A serial-to-USB adapter (if using a USB GPS device)

Application Logic

• The application attempts to connect to the GPS module via the serial port.
• It listens for GPS data on the specified serial port.
• The GPS data (NMEA sentences) is parsed, and the latitude and longitude values are extracted from $GPGGA and $GPRMC sentences.
• The raw coordinates are converted from the DDMM.MMMM format to decimal degrees and displayed on the console.

Code Walkthrough

1. Serial Port Configuration:
   The application uses the System.IO.Ports.SerialPort class to communicate with the GPS module. You need to specify the correct port name (e.g., COM5), baud rate, stop bits, parity, and handshake for the connection.

2. Data Reception:
   When data is received from the GPS module, the GpsModuleOnDataReceived event handler is triggered. It reads the data from the serial port, splits it by newline characters, and checks for the $GPGGA and $GPRMC sentences.

3. Coordinate Conversion:
   The ConvertToDecimalDegrees method is used to convert the raw latitude and longitude values (in the DDMM.MMMM format) into decimal degrees.

4. Output:
   The coordinates are printed on the console in the following format:

   yyyy-MM-ddTHH:mm:ss => latitude, longitude
   

Example Output

2025-01-06T12:30:45 => 37.774929, -122.419418

Notes

• The Thread.Sleep(300) is added to throttle the data processing slightly. You can adjust or remove this delay depending on the performance requirements.
• Make sure that the GPS module is powered on and outputting NMEA sentences.
• The program works best with a direct connection to the GPS module. If using a USB-to-serial adapter, ensure the correct COM port is specified.

License

This project is licensed under the MIT License. See the license file for details.

Issues, Feature Requests or Support

Please use the Issue > New Issue button to submit issues, feature requests or support issues directly to me. You can also send an e-mail to akin.bicer@outlook.com.tr.