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50 lines
1.6 KiB
Python
50 lines
1.6 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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"""
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https://56k.es/fanta/utilizando-un-modulo-gps-usb-barato-en-gnulinux/
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apt install python3-nmea2 python3-serial
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NMEA 0183 PROTOCOL: https://www.serialmon.com/protocols/nmea0183.shtml
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'Timestamp', 'timestamp'
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'Latitude', 'lat'
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'Latitude Direction', 'lat_dir'
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'Longitude', 'lon'
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'Longitude Direction', 'lon_dir'
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'GPS Quality Indicator', 'gps_qual', int
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'Number of Satellites in use', 'num_sats'
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'Horizontal Dilution of Precision', 'horizontal_dil'
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'Antenna Alt above sea level (mean)', 'altitude', float
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'Units of altitude (meters)', 'altitude_units'
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'Geoidal Separation', 'geo_sep'
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'Units of Geoidal Separation (meters)', 'geo_sep_units'
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'Age of Differential GPS Data (secs)', 'age_gps_data'
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'Differential Reference Station ID', 'ref_station_id'
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"""
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import io
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import os
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import sys
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import pynmea2
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import serial
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if os.geteuid() != 0:
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sys.exit("You need to have root privileges to run this script.\nPlease try again, this time using 'sudo' for example. Exiting.")
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ser = serial.Serial('/dev/ttyACM0', 9600, timeout=5.0)
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sio = io.TextIOWrapper(io.BufferedRWPair(ser, ser))
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while 1:
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try:
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line = sio.readline()
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msg = pynmea2.parse(line)
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if msg.talker == "GP" and msg.sentence_type == "GGA":
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print("[", msg.timestamp, "] [ Satelites:", msg.num_sats, "] - Lat:", msg.lat, "Lon:", msg.lon, "Alt:", msg.altitude)
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except serial.SerialException as e:
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print('Device error: {}'.format(e))
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break
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except pynmea2.ParseError as e:
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print('Parse error: {}'.format(e))
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continue
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