# Will print NMEA sentences received from the GPS, great for testing connection
# Uses the GPS to send some commands, then reads directly from the GPS
import time
import serial
import board
import busio
import adafruit_gps

timestr = time.strftime("%Y%m%d-%H%M%S")

# Create a serial connection for the GPS connection using default speed and
uart = serial.Serial("/dev/ttyS0", baudrate=9600, timeout=3000)
 
# Create a GPS module instance.
gps = adafruit_gps.GPS(uart)  # Use UART/pyserial
 
# Turn on the basic GGA and RMC info (what you typically want)
gps.send_command(b"PMTK314,0,1,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0")
 
# Set update rate to twice a second (2hz, 500ms delay):
gps.send_command(b'PMTK220,500')
 
# Main loop runs forever printing data as it comes in
timestamp = time.monotonic()

file = open("/home/pi/projects/mqp/logs/gps_log_" + timestr + ".txt","w")
while True:
    data = gps.read(32)  # read up to 32 bytes
    # print(data)  # this is a bytearray type
 
    if data is not None:
        # convert bytearray to string
        data_string = "".join([chr(b) for b in data])
        print(data_string, end="")    
    
        file.write(data_string)
        file.flush()
     
"""
    if data is not None:
        # convert bytearray to string
        data_string = "".join([chr(b) for b in data])
        print(data_string, end="")
 
    if time.monotonic() - timestamp > 5:
        # every 5 seconds...
        gps.send_command(b"PMTK605")  # request firmware version
        timestamp = time.monotonic()
""”