Skip to content

Instantly share code, notes, and snippets.

@shriyanss

shriyanss/neo-6m-gps-read-rpi.py

Created December 27, 2024 14:58
Show Gist options

  • Select an option

    Learn more about clone URLs
  • Save shriyanss/2cc7db449ae3ba12b08f6b911d826a7d to your computer and use it in GitHub Desktop.

Select an option

Learn more about clone URLs
Save shriyanss/2cc7db449ae3ba12b08f6b911d826a7d to your computer and use it in GitHub Desktop.
Download ZIP

Revisions

  1. shriyanss created this gist Dec 27, 2024.
    45 changes: 45 additions & 0 deletions neo-6m-gps-read-rpi.py
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,45 @@
    import re

    latitude = None
    longitude = None

    def parse_gprmc(sentence):
    """Parse GPRMC sentence to extract and convert GPS coordinates."""
    parts = sentence.split(',')
    if len(parts) < 7 or parts[2] != 'A': # Check for valid data (A = Active)
    return None, None

    # Parse latitude
    lat_raw = parts[3]
    lat_dir = parts[4]
    lat_deg = int(lat_raw[:2])
    lat_min = float(lat_raw[2:])
    latitude = lat_deg + (lat_min / 60)
    if lat_dir == 'S':
    latitude = -latitude

    # Parse longitude
    lon_raw = parts[5]
    lon_dir = parts[6]
    lon_deg = int(lon_raw[:3])
    lon_min = float(lon_raw[3:])
    longitude = lon_deg + (lon_min / 60)
    if lon_dir == 'W':
    longitude = -longitude

    return latitude, longitude

    def read_gps():
    """Continuously read GPS data from /dev/ttyAMA0."""
    with open('/dev/ttyAMA0', 'r') as gps:
    while True:
    line = gps.readline().strip()
    if line.startswith('$GPRMC'):
    lat, lon = parse_gprmc(line)
    if lat is not None and lon is not None:
    print(f"Latitude: {lat:.5f}, Longitude: {lon:.5f}")
    latitude = f"{lat:.5f}"
    longitude = f"{lat:.5f}"

    if __name__ == "__main__":
    read_gps()