GPy

• T

  LTE-M packet size
  • Thomas Thomas  

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  The MQTT library should work fine over LTE (we use it in Pybytes as well), though it seems the address resolver cannot find your mqtt server. the EAI_FAIL (Error Address Information) is caused by the DNS lookup failing, unrelated to the MQTT protocol.
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  Wakeup pins missing from wakeup reason
  • techykermit  

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  @techykermit how you wire looks like? If you simply use this pin not connected then you got this behavior If you connect it to GND by wire you will see pin in wake_reason(). If you have e.g. button wired to this pin you must look at debounce. Add e.g. 100nF ceramic capacitor should fix problem.
• C

  LTE NB - IOT (Telenet - Belgium)
  • carl declercq  

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  @carl-declercq Best of luck, let me know if you need any further help!
• J

  LTE support for Telia and Telenor (Norway)
  lte nb-iot telia cat-m telenor • • Jardar  

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  Any success with telenor or telia? I live in sweden and are just getting started.
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  Telia LTE-M Sweden
  lte lte-m lte m1 telia sweden • • hammerfet  

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  @hammerfet have you had success at this lately? Just getting started with lte and will try telenor and telia.
• K

  sequans verbose/diagnostic
  • kjm  

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  @kjm Just ran into the SQNINS=0 issue myself; I get the same output whether 0 or 1 is specified for full or fast scanning. Can anyone provide insight into this?
• P

  GPy IP Address
  • pauldeng  

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  @kjm Thanks a lot. print(lte.send_at_cmd('AT+CGCONTRDP')) works! It gives +CGCONTRDP: 1,5,"telstra.internet.xxx.yyy.gprs","10.247.zz.gg.255.255.255.255","","10.4.hh.ii","10.5.jjj.kk","","" 10.247.zz.gg is the local ip address. Sad it is not public ip. Cheers, Paul
• M

  Error starting modem connection
  • Massimo Rebellato  

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  Hi, Could you let me know of the output with lte =LTE(debug=True), that way, we can verify the AT commands. Also be sure to verify the power supply capabilities, as the LTE modem might consume more current than expected Could you also let me know of the following output: import sqnsupgrade sqnsupgrade.info(debug=True) This will return a coredump at the end, please do not copy that over, but only the text at the top. Let me know, Gijs
• S

  How to handle a LTE Connectivity loss
  • SciWax  

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  As a note to people who use a 1nce-SIM card on a Pycom GPy together with an Arduino Watchdog. Today, I had another LTE Connectivity loss. Again, my GPy was only attached according to the 1nce dashboard and the normal resets through my Arduino and the Reset Pin on the GPy didn't work for getting that connection back. Before visiting my measurement system in the field to power cycle the GPy manually, I've decided to try the the SIM Reset in the 1nce customer portal for the SIM of the GPy. After reading,"from suspended to activated" in the event window of the dashboard, the data connection happened again after my GPy did a normal reset through pulling the Reset Pin low on the GPy (I guess). It could be pure coincidence, because unfortunately I don't have a second identical system around for debugging purposes at the moment, which would possibly support the idea. It would be really weird, if there wouldn't be a connection between the SIM card reset and the re-established data connection though, because my GPy in the field nearly didn't send for a whole hour. A few moments later after I've resetted the SIM card, the data connection came back and the GPy send data to my database again. That would be too much of a coincidence to be honest. So my suggestion is, if you use the 1nce service and the data connection is gone, maybe try a SIM card reset through the customer portal too. Still, I can't really tell, if it was a coincidence or not so take my advise with a grain of salt. Unfortunately I have no idea, if other providers have a "SIM reset" service like that. As another note: I've send my data every 3 minutes for 16 days without any problems before the loss of data connection happened. Quite happy about that,
• N

  WiFi AP
  • nadvorvo  

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  @Gijs said in WiFi AP: I looked at this for a long time, but then figured it out Hi @Gijs I really appreciate the support you’ve given me. I have testes, everything all right. Regards, Vojtech
• S

  Use accelerometer to put module to sleep.
  • Steven Owen  

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  What happens after you call py.go_to_sleep(), is the Pytrack coprocessor cuts off the supply power to the microcontroller. This is the lowest power sleep state available. On the accelerometer wake, the coprocossor switches the power back on, meaning the Gpy will boot up as if it was just plugged in (starting with boot.py and continuing in main.py). If you have a pytrack 1, you do not have to use the workaround provided in the link I posted. The suggestion to wait 10 minutes is because sometimes you have to wait for traffic lights and such, where you do not want to turn off the tracker. I would take the inactivity interrupt (which follows the activity interrupt, when the movement is on the falling edge) from the accelerometer, and note down the time. Then, in the main loop check that time against the current time and see if the 10 minutes have passed. If so, go to sleep and make it wake on accelerometer. You'll have to set the sensitivity just correct that it does not wake up on small movements of entering and exiting the caravan, but that it does trigger on driving it on the road I presume.
• A

  Setting up GPy as a router
  • Al_Capern  

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  Hi, did you find a solution to this?
• K

  GPY loss of attachment ability
  • kjm  

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  Hi, Over the last year we have changed a big part of our LTE stack, including changing the CEREG setting (in version 1.20.2.r2). Check whether the CEREG setting is set to 1, or change it to 1 using the following: from network import LTE lte = LTE() print(lte.send_at_cmd('AT+CEREG=1'))
• C

  Gpy for simple Alarm via LTE M or NB-IOT
  • Clyde Bess  

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  @Gijs THX :) i also found a script of an member using lte on MQTT - the only problem I have that after some minutes I get back OSError: [Errno 104] ECONNRESET is this problem on my side ( LTE connection down )? I also try to figure out why on one loop the print("") comes random and on a other loop it stay on one spot..
• K

  gpy camera?
  • kjm  

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  https://forum.pycom.io/topic/6835/camera-uart-reading-pycom?_=1613190557153 I did get a better camera working.
• S

  pin hold doesn't work?
  • SciWax  

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  I'm using 100 ms for that genuine HIGH state on the GPy after a successfull Data transmission at the moment and after 1.5 days I can say it works so far. :) Thanks for the help again!
• K

  Code testing without wires
  • kjm  

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  @robert-hh said in Code testing without wires: So Atom may not notice the deepsleep Interesting Rob. I notice on longer deepsleeps (>1hr) that Atom over usb often misses the wakeups too. I don't understand the mechanism though. Some nights Atom will show every hourly wakeup print. On the occasions where it misses one it never reconnects.
• K

  Guru meditation revisted
  • kjm  

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  @peterp Swapped to a different gpy & problem gone so I'm assuming the other gpy had dodgy flash out-of-the box. As soon as dev board is free I'll plug in the dodgy & supply the requested. Maybe I'll get another rare 'double exception' error. I have to say I'm sceptical any of this will lead anywhere given the random nature of the errors it throws but always happy to proven wrong.
• P

  Best Practices for Push Notifications to gpy
  • Patton Doyle  

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  Thanks! Appreciate the recommendation.
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  Becuase of firmware or not?
  • Don-iot  

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  Case closed, we found it and it was our own mistake.