import serial
gpsPort = "/dev/ttyACM0"
gpsSerial = serial.Serial(gpsPort, baudrate = 9600, timeout = 0.5)

def parseGPS(data):
    gps = data

    try:        
        if gps[2:8] == "$GNGGA":
            gps = gps.split(",")

            timeHour = (int(gps[1][0:2]) - 4) % 24
            timeMin = int(gps[1][2:4])
            timeSec = int(gps[1][4:6])
            print("Time: " + str(timeHour) + ":" + str(timeMin) + ":" + str(timeSec))

            latDeg = int(gps[2][0:2])
            latMin = int(gps[2][2:4])
            latSec = float(gps[2][5:9]) * (3/500)
            latNS = gps[3]
            print("Latitude:  " + str(latDeg) + "°" + str(latMin) + "'" + str(latSec) + '" ' + latNS)

            longDeg = int(gps[4][0:3])
            longMin = int(gps[4][3:5])
            longSec = float(gps[4][6:10]) * (3/500)
            longEW = gps[5]
            print("Longitude:  " + str(longDeg) + "°" + str(longMin) + "'" + str(longSec) + '" ' + longEW)

            alt = float(gps[9])
            print("Altitude: " + str(alt) + " m")

            sat = int(gps[7])
            print("Satellites: " + str(sat))
        if gps[2:8] == "$GNRMC":
            gps = gps.split(",")

            speed = float(gps[7]) * 1.852
            print("Speed: " + str(speed) + " km/h")
            
            head = float(gps[8])
            print("Heading: " + str(head))
        else:
            gps = ""
    except Exception as error:
        print(error)

    return gps
while True:
    print(parseGPS(gpsSerial.readline()))