lopy4 +pytrack v1.1 does not show me coordinates , i have not idea why. the code stops in this part.



  • d41227f5-0119-490a-83cf-fa66635b6865-image.png



  • @jefferson-ayala

    I am not on the latest version.
    It seems that main.py is never called.
    outcomment the last 3 lines of boot.py. You do not need to set the UART and main.py to the default values. Once this was problematic. Especially the UART redefinition.

    If main.py is called, you are waiting for at least one satellite to go on. This may never happens. Sadly there is no flush. You can either set to LED color or a sleep of 4sec after each print. So you can see better the last executed instruction .


  • Global Moderator

    You set a timeout of 60 in the main.py (which is differnet in the code you shared, where it is 30) on instantiating the GPS, meaning it will only print results every 60 seconds. Also, as @jcaron suggested, have you tried (and uploaded) the source from our examples on Github / in the documentation: https://docs.pycom.io/tutorials/expansionboards/pytrack2/ ?



  • @jcaron hi , i have another part of the code . watch it

    code_textfrom machine import UART
    from network import Sigfox
    import binascii
    import machine
    import os
    # initalise Sigfox for RCZ1 (Europe) (You may need a different RCZ Region)
    sigfox = Sigfox(mode=Sigfox.SIGFOX, rcz=Sigfox.RCZ4)
    # print Sigfox Device ID
    print("ID: ", binascii.hexlify(sigfox.id()))
    # print Sigfox PAC number
    print("PAC: ", binascii.hexlify(sigfox.pac()))
    uart = UART(0, baudrate=115200)
    os.dupterm(uart)
    machine.main('main.py')
    


  • @jefferson-ayala I believe you have other code running on your LoPy, the output does not match tour source. Do you have something in boot.py maybe?



  • @jcaron hi , i share the code , i was download at github , please help me. the picture shared was outside of my house , do you know how i know if my zone o where a found a good visibility ? have you ever used the gps with the pytrack ?please .Help me ```
    code_text

    Insert Code Here
    ```## Test code for read date/time from gps and update RTC
    import machine
    import math
    import network
    import os
    import time
    import utime
    from machine import RTC
    from machine import SD
    from machine import Timer
    from L76GNSS import L76GNSS
    from pytrack import Pytrack
    import struct
    # setup as a station
    
    import gc
    
    time.sleep(2)
    gc.enable()
    
    #Start GPS
    py = Pytrack()
    l76 = L76GNSS(py, timeout=30)
    #start rtc
    rtc = machine.RTC()
    print('Aquiring GPS signal....')
    #try to get gps date to config rtc
    while (True):
       gps_datetime = l76.get_datetime()
       #case valid readings
       if gps_datetime[3]:
           day = int(gps_datetime[4][0] + gps_datetime[4][1] )
           month = int(gps_datetime[4][2] + gps_datetime[4][3] )
           year = int('20' + gps_datetime[4][4] + gps_datetime[4][5] )
           hour = int(gps_datetime[2][0] + gps_datetime[2][1] )
           minute = int(gps_datetime[2][2] + gps_datetime[2][3] )
           second = int(gps_datetime[2][4] + gps_datetime[2][5] )
           print("Current location: {}  {} ; Date: {}/{}/{} ; Time: {}:{}:{}".format(gps_datetime[0],gps_datetime[1], day, month, year, hour, minute, second))
           rtc.init( (year, month, day, hour, minute, second, 0, 0))
           break
    
    print('RTC Set from GPS to UTC:', rtc.now())
    
    chrono = Timer.Chrono()
    chrono.start()
    #sd = SD()
    #os.mount(sd, '/sd')
    #f = open('/sd/gps-record.txt', 'w')
    while (True):
    
       print("RTC time : {}".format(rtc.now()))
       coord = l76.coordinates()
       #f.write("{} - {}\n".format(coord, rtc.now()))
       print("$GPGLL>> {} - Free Mem: {}".format(coord, gc.mem_free()))
       coord1 = l76.coordinates1()
       print("$GPGGA>> {} - Free Mem: {}".format(coord1, gc.mem_free()))
       coord2 = l76.get_datetime()
       print("$G_RMC>> {} - Free Mem: {}".format(coord2, gc.mem_free()))
    
    
    


  • @jefferson-ayala please share your code (be sure to format is as code by clicking on the </> icon on the toolbar). Also include the full log (as text, not an image).

    Also, are you outside with good visibility of the sky? A GPS receiver needs line-of-sight to multiple GPS satellites.

    You may want to disable Pybytes if you don't use it, it can be quite confusing.


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