[PYTHON] Use GPS with Edison

A test to read GPS connected to Edison UART using python.

Premise

Module to install

hardware

Intel Edison
LOCOSYS LS2003E Connect to UART0
Baud rate 9600bps

Try out

The connection with UART is made by mraa, and the acquired value is processed by pynmea2.

import mraa
import serial
import pynmea2

#UART port specification
uart = mraa.Uart(0)

#Creation of Serial object. Baud rate is 9600bps
ser = serial.Serial(uart.getDevicePath(), 9600)

while 1:
	#Parse line by line
    msg = pynmea2.parse(ser.readline())
    
    #Sentence processes GGA stuff
    if msg.sentence_type == 'GGA':  # Global Positioning System Fix Data
        print {
            'gps.number_of_satellites': msg.num_sats,
            'gps.latitude': msg.latitude,
            'gps.longitude': msg.longitude,
            'gps.altitude': msg.altitude,
        }

You can get something like this.

{
    'gps.altitude': -12.8,
    'gps.longitude': 139.77447469,
    'gps.number_of_satellites': '11',
    'gps.latitude': 35.700290937
}

Impressions

As long as the circuit is connected, python + mraa + pynmea2 can handle it very easily. There are several sentences defined in NMEA, so it seems that you need to understand NMEA to use it correctly.

reference

NMEA

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