# https://56k.es/fanta/utilizando-un-modulo-gps-usb-barato-en-gnulinux/
# apt install python3-nmea2 python3-serial
# NMEA 0183 PROTOCOL: https://www.serialmon.com/protocols/nmea0183.shtml
#        ('Timestamp', 'timestamp', timestamp),
#        ('Latitude', 'lat'),
#        ('Latitude Direction', 'lat_dir'),
#        ('Longitude', 'lon'),
#        ('Longitude Direction', 'lon_dir'),
#        ('GPS Quality Indicator', 'gps_qual', int),
#        ('Number of Satellites in use', 'num_sats'),
#        ('Horizontal Dilution of Precision', 'horizontal_dil'),
#        ('Antenna Alt above sea level (mean)', 'altitude', float),
#        ('Units of altitude (meters)', 'altitude_units'),
#        ('Geoidal Separation', 'geo_sep'),
#        ('Units of Geoidal Separation (meters)', 'geo_sep_units'),
#        ('Age of Differential GPS Data (secs)', 'age_gps_data'),
#        ('Differential Reference Station ID', 'ref_station_id'),

import io
import pynmea2
import serial

ser = serial.Serial('/dev/ttyACM0', 9600, timeout=5.0)
sio = io.TextIOWrapper(io.BufferedRWPair(ser, ser))

while 1:
    try:
        line = sio.readline()
        msg = pynmea2.parse(line)
        if msg.talker == "GP" and msg.sentence_type == "GGA":
            print("[", msg.timestamp, "] [ Satelites:", msg.num_sats, "] - Lat:", msg.lat, "Lon:", msg.lon, "Alt:", msg.altitude)

    except serial.SerialException as e:
        print('Device error: {}'.format(e))
        break
    except pynmea2.ParseError as e:
        print('Parse error: {}'.format(e))
        continue