使用Raspbery pi将Gps数据保存到TXT

Question

我有使用python的树莓派，我通过带有串行GPIO的模块NEO Blox 6获得了Lat和lng。

我可以正确运行python代码并获得result。现在我想每10分钟将map_link保存到txt文件中。

我用过的python代码：

import serial               #import serial pacakge
from time import sleep
import webbrowser           #import package for opening link in browser
import sys                  #import system package

def GPS_Info():
    global NMEA_buff
    global lat_in_degrees
    global long_in_degrees
    nmea_time = []
    nmea_latitude = []
    nmea_longitude = []
    nmea_time = NMEA_buff[0]                #extract time from GPGGA string
    nmea_latitude = NMEA_buff[1]            #extract latitude from GPGGA string
    nmea_longitude = NMEA_buff[3]           #extract longitude from GPGGA string

    print("NMEA Time: ", nmea_time,'\n')
    print ("NMEA Latitude:", nmea_latitude,"NMEA Longitude:", nmea_longitude,'\n')

    lat = float(nmea_latitude)              #convert string into float for calculation
    longi = float(nmea_longitude)           #convertr string into float for calculation

    lat_in_degrees = convert_to_degrees(lat)    #get latitude in degree decimal format
    long_in_degrees = convert_to_degrees(longi) #get longitude in degree decimal format

#convert raw NMEA string into degree decimal format   
def convert_to_degrees(raw_value):
    decimal_value = raw_value/100.00
    degrees = int(decimal_value)
    mm_mmmm = (decimal_value - int(decimal_value))/0.6
    position = degrees + mm_mmmm
    position = "%.4f" %(position)
    return position

gpgga_info = "$GPGGA,"
ser = serial.Serial ("/dev/ttyS0")    #Open port with baud rate
GPGGA_buffer = 0
NMEA_buff = 0
lat_in_degrees = 0
long_in_degrees = 0

try:
    while True:
        received_data = (str)(ser.readline())                   #read NMEA string received
        GPGGA_data_available = received_data.find(gpgga_info)   #check for NMEA GPGGA string                 
        if (GPGGA_data_available>0):
            GPGGA_buffer = received_data.split("$GPGGA,",1)[1]  #store data coming after "$GPGGA," string 
            NMEA_buff = (GPGGA_buffer.split(','))               #store comma separated data in buffer
            GPS_Info()                                          #get time, latitude, longitude 
            print("lat in degrees:", lat_in_degrees," long in degree: ", long_in_degrees, '\n')
            map_link = 'http://maps.google.com/?q=' + lat_in_degrees + ',' + long_in_degrees    #create link to plot location on Google map
            print("<<<<<<<<press ctrl+c to plot location on google maps>>>>>>\n")               #press ctrl+c to plot on map and exit 
            print("------------------------------------------------------------\n")

except KeyboardInterrupt:
    webbrowser.open(map_link)                                   #open current position information in google map
    sys.exit(0)