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# For other boards set RX = GPS module TX, and TX = GPS module RX pins.

RX = board.RX

TX = board.TX

# Create a serial connection for the GPS connection using default speed and

# a slightly higher timeout (GPS modules typically update once a second).

uart = busio.UART(TX, RX, baudrate=9600, timeout=3000)

# Create a GPS module instance.

gps = adafruit_gps.GPS(uart)

# Initialize the GPS module by changing what data it sends and at what rate.

# These are NMEA extensions for PMTK_314_SET_NMEA_OUTPUT and

# PMTK_220_SET_NMEA_UPDATERATE but you can send anything from here to adjust

# the GPS module behavior:

# https://cdn-shop.adafruit.com/datasheets/PMTK_A11.pdf

# Turn on the basic GGA and RMC info (what you typically want)

gps.send_command('PMTK314,0,1,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0')

# Turn on just minimum info (RMC only, location):

#gps.send_command('PMTK314,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0')

# Turn off everything:

#gps.send_command('PMTK314,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0')

# Tuen on everything (not all of it is parsed!)

#gps.send_command('PMTK314,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0')

# Set update rate to once a second (1hz) which is what you typically want.

gps.send_command('PMTK220,1000')

# Or decrease to once every two seconds by doubling the millisecond value.

# Be sure to also increase your UART timeout above!

#gps.send_command('PMTK220,2000')

# You can also speed up the rate, but don't go too fast or else you can lose

# data during parsing. This would be twice a second (2hz, 500ms delay):

#gps.send_command('PMTK220,500')

# Main loop runs forever printing the location, etc. every second.

last_print = time.monotonic()

while True:

# Make sure to call gps.update() every loop iteration and at least twice

# as fast as data comes from the GPS unit (usually every second).

# This returns a bool that's true if it parsed new data (you can ignore it

# though if you don't care and instead look at the has_fix property).

gps.update()

# Every second print out current location details if there's a fix.

current = time.monotonic()

if current - last_print >= 1.0:

last_print = current

if not gps.has_fix:

# Try again if we don't have a fix yet.

print('Waiting for fix...')

continue

# We have a fix! (gps.has_fix is true)

# Print out details about the fix like location, date, etc.

print('=' * 40) # Print a separator line.

print('Fix timestamp: {}/{}/{} {:02}:{:02}:{:02}'.format(

gps.timestamp_utc.tm_mon, # Grab parts of the time from the

gps.timestamp_utc.tm_mday, # struct_time object that holds

gps.timestamp_utc.tm_year, # the fix time. Note you might

gps.timestamp_utc.tm_hour, # not get all data like year, day,

gps.timestamp_utc.tm_min, # month!