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→Minimal test
=== Minimal test ===
=== Minimal test ===
The [https://github.com/mchobby/cansat-belgium-micropython/blob/main/test-gps/minimaltest.py minimal test] script:
* Opens and configure the UART (serial port) of the Pico
* Create a GPS object (attached to the UART).
* Wait the GPS to get a Network Fix (NMEA protocol returns the Fix status)
* Display useful information from the GPS
<syntaxhighlight lang="python">
from machine import UART, Pin
import utime as time
:::: indiquer qu'il faut attendre le fix :::
from adafruit_gps import GPS
# Pyboard (TX=X9, RX=X10)
uart = UART( 0, rx=Pin(1), tx=Pin(0), baudrate=9600, timeout=3000)
# Create a GPS instance
gps = GPS(uart)
# Turn on the basic GGA and RMC info
gps.send_command( 'PMTK314,0,1,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0')
# Set update rate to once a second (1hz)
gps.send_command( 'PMTK220,1000')
# Main loop runs
last_print = time.ticks_ms()
while True:
gps.update() # update object with data sent by GPS over uart
current = time.ticks_ms()
if time.ticks_diff(current, last_print) >= 1000: # Print once a second only
last_print = current
if not gps.has_fix:
print('Waiting for fix...')
continue # restart the While loop
print('=' * 40)
print('Fix timestamp: {}/{}/{} {:02}:{:02}:{:02}'.format(
gps.timestamp_utc[1],
gps.timestamp_utc[2],
gps.timestamp_utc[0],
gps.timestamp_utc[3],
gps.timestamp_utc[4],
gps.timestamp_utc[5]))
print('Latitude: {} degrees'.format(gps.latitude))
print('Longitude: {} degrees'.format(gps.longitude))
if gps.satellites is not None:
print('# satellites: {}'.format(gps.satellites))
if gps.track_angle_deg is not None:
print('Speed: {} km/h'.format(gps.speed_knots*1.8513))
</syntaxhighlight>
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