NMEA Data Feed into QGIS

Try saving this script as "save_log.py", and then:

1. Connect to your device via the QGIS GPS Information Panel
2. Drag and drop the script over the qgis window
3. Pick a destination file for the GPS log
4. Leave it to record some points, and then disconnect the GPS from the QGIS GPS Information Panel

Attach some of the lines from the saved log file. It's possible that the device is reporting non-standard NMEA codes, so the log will help determine if that's the case.

from qgis.PyQt.QtWidgets import QFileDialog, QMessageBox
from qgis.core import QgsApplication

gps_list = QgsApplication.gpsConnectionRegistry().connectionList()
if not gps_list:
    QMessageBox.critical(None,'GPS Connection','Please connect to the GPS first')
else:
    gps = gps_list[0]
    assert gps

    dest, _ = QFileDialog.getSaveFileName(None, "Save GPS messages to", "gps.log", "Log files (*.log)")
    f = None
    if dest:
        f = open(dest,'wt')
            
    def printSentence(sentence):
        f.write(sentence + 'n')
        
    def closeLog():
        f.close()

    if dest:
        gps.nmeaSentenceReceived.connect(printSentence)
        gps.destroyed.connect(closeLog)