Grouping NMEA data from two data sources to one row in a CSV file

Problem:

I have two data sources, depth sounder connected to COM3, 9600bps, 1Hz, $DPDPT (with Aten USB), and GPS (Geomax Zenith20+Getac236) connected to COM4, 9600bps, 1Hz, $GPGGA.

Data is collected to my navigation software (SeaClear), displayed on a screen (position and depth), and collected to log file.

Now I want to redirect incoming data simultaneously, without stopping collecting data to navigation software, to my Advanced NMEA Data Logger in two columns, row by row.

1. Create the configuration in the main window using the "Green Plus" button or open the existing configuration (Options → Manage configurations → Your configuration → Modify).

2. Switch to the "COM port → COM port settings" tab (fig.1), then select two COM ports in the list with COM ports.

Fig. 1: COM port settings

3. Switch to the "Modules → Query Parse Filter" tab (fig. 2).

Fig. 2: The parser module

4. Click the "Setup" button next to the "NMEA data parser" item.

5. When a dialog box appears (fig. 3), select the packet types you need to process and export.

Fig. 3: Selecting NMEA sentences

Important: Select only the packet types that you need to avoid exporting unnecessary data.

6. On the "Common" tab (fig. 4), you should add the necessary NMEA sentences to the data aggregation list. Please note that a device type identifier must be specified in addition to a packet type identifier (GGA → GPGGA).

Fig. 4: NMEA sentences aggregation

7. Save the changes by clicking the "OK" button.

8. Change data view mode in the main window and select the "CSV" format (fig. 5).

Fig. 5: CSV data view mode

9. Configure log files settings: change mode, a file name prefix and extension, and other important options, as shown in figure 6.

Fig. 6: Log file settings

10. Save the changes by clicking the "OK" button.

11. Wait for incoming data from both data sources. The CSV data string appears in the main window when the parser receives selected NMEA sentences from both data sources. Immediately, the logger writes the same string to a log file.

Fig. 7: NMEA - CSV data

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