GPy

• M

  Cannot connect device after firmware update.
  • Matt Xu 0  

  2
  0
  Votes
  2
  Posts
  35
  Views

  R

  @Matt-Xu-0 Make sure you check the box for flash erase before you upgrade. Also, make sure you release GPIO 0 to get out of bootloader mode.
• S

  'module' object has no attribute 'mkfs'
  • Sn3akyP3t3  

  11
  0
  Votes
  11
  Posts
  1179
  Views

  G

  @kjm that's a bit esoteric for my current knowledge levels. I would have assumed that the "flash" is fragile regardless of language? Also, I'd be curious how you manage to stick to RTC RAM only. TBH, my gripe is with the docs not being updating properly when Pycom/Micropython API changes are made. I could forgive it if they references the external Micropython docs for the latter. I'm not even annoyed that I have to recreate the filesystem so often, given the frequency that I make changes and re-upload a project. Never too late to learn a new language, trouble is there always so many to choose from.
• M

  How to wake up Gpy from Deep Sleep mode?
  • Matt Xu 0  

  4
  0
  Votes
  4
  Posts
  20
  Views

  M

  Maybe it is another problem. I did what the doc said. Holding the safe boot button and restart the device, VS code cannot connect to the device. It just showing 'Connecting to COM3...'. In my device manager, I can see the device is "Port(COM and LPT) USB Serial Device (COM3)". (Something like that since my os is Chinese). The LED flashes blue every 5 seconds (heartbeat perhaps). Thank you!
• 

  Retrieve serial number for GPY
  • Don-iot  

  7
  0
  Votes
  7
  Posts
  41
  Views

  

  @jcaron This is what I am referring to: machine.unique_id() # return the 6-byte unique id of the board (the LoPy's WiFi MAC address) [https://docs.pycom.io/firmwareapi/pycom/machine/#machineunique_id] -the question is how that id is formated, and if all parts are unique, or just parts.
• B

  sdi-12 sensor reading
  • Bryan Hom  

  1
  0
  Votes
  1
  Posts
  11
  Views

  No one has replied

• B

  GPY are Arduino data gate way?
  arduino • • Bruce Vernham  

  3
  0
  Votes
  3
  Posts
  44
  Views

  S

  I don't use the GPy for sending whole files, but basically as a device to send data in real time every few minutes. I have an Arduino connected to a GPy via serial. The Arduino sends data strings to the GPy. The GPy sends the data to my database at the end. I have to tell you though, that sending data via LTE-M didn't work reliably for me till I took some certain measures. Problem 1: The GPy consistently stopped working for me after a short while (every few days), because of Guru Meditation Errors, where the GPy often completely froze. It just couldn't recover by itself. That's why I've used my Arduino also as an external Watchdog, resetting the GPy with the Arduino. These Guru Meditation Errors seem to come up pretty often while using it to transmit data (LTE-M). Problem 2: Sometimes the GPy also thinks it has a data connection, while it is not the case. Using the Reset pin on the GPy doesn't help in this case. That's why I also had to implement a P-Channel Mosfet, which cuts the power off from the GPy. This power cycle helps with the problem in my experience. The features of Pycom hardware are wonderful, if you are interested in getting your data onto a server, but you have to take some measures to make it work reliably. I wish you good luck with your project!
• G

  AT+CEREG? returns empty string && 1.20.2.rX "bricks" GPy
  • goldfishalpha  

  4
  0
  Votes
  4
  Posts
  30
  Views

  R

  @goldfishalpha Found a snippet somewhere about that and it is now a religious expectation to select both, it should just enable them by defult.
• R

  Older is better?
  • Richard Johnson  

  4
  0
  Votes
  4
  Posts
  40
  Views

  J

  @Richard-Johnson as I wrote, you don’t know if it’s the firmware or the hardware which is better. If you have both in the same firmware (which you can change), you’ll be able to verify if the difference is due to the firmware (if with the same version they behave the same) or the hardware (if with the same version one is still better then the other). The issue is that if it turns out to be the firmware which makes the difference, I don’t know if you can revert to the old version.
• R

  Reflashing os package
  • Roetz Bikes  

  3
  0
  Votes
  3
  Posts
  30
  Views

  R

  hi @goldfishalpha - thanks for taking the time to answer! And good that you did, as I already solved the issue, but forgot to update. For anyone with the same problem: Using the "Pycom Firmware Update", if you tick on "show advanced settings": you'll have the option to "Erase during update". I've also ticked both RESET buttons, but not sure if strictly necessary: That did the trick for me.
• K

  Modem attachment refusal
  • kjm  

  2
  0
  Votes
  2
  Posts
  33
  Views

  G

  Finding all these (old?) gems trying to solve my own issues. Did you fix this? If so, what worked. Anyone in a similar situation, I would suggest going back to an old firmware (for me 1.20.1 recovered my device), then see how far up the firmware chain you can get. Having said that, I still don't know if my code will run now, but all the preliminary REPL tests are promising...
• T

  GPy 1.0R with Firmware 1.20.2.rc6 and Hologram SIM
  • tkprashanth01  

  2
  0
  Votes
  2
  Posts
  42
  Views

  G

  Sorry for the late response. Could you define connect? (are you referring to the LTE connection and/or debug cable?) Usually helps people answer a question if they have more context. I don't regard these boards as suitable to be used in any deployment long term. They invariably crash within a few days or weeks, and need rebooting or reflashing.
• D

  Unable to communicate to pybytes app
  • Devan Lippman  

  3
  0
  Votes
  3
  Posts
  28
  Views

  D

  @d-alvrzx this seems to have the application running thanks! smac does not appear to apply to GPy. Won't know more until I get the modem running I guess... Thanks again, Devan
• A

  Test Report for Bands 1,3, 5 & 8 (NB-IOT)
  • Alexander Hißen  

  1
  0
  Votes
  1
  Posts
  19
  Views

  No one has replied

• B

  LTE not attaching anymore
  • bouchard.claude  

  1
  0
  Votes
  1
  Posts
  34
  Views

  No one has replied

• 

  OSError: Couldn't start connection to Modem (modem_state=disconnected) error
  • Don-iot  

  5
  1
  Votes
  5
  Posts
  86
  Views

  T

  We have had similar problems. Our solution ended up being adding an external watchdog that switches the +5V power to the GPy chip. Resetting the GPy chip does not solve the problem. The power must be cycled off/on.
• 

  NB-IoT power
  • Don-iot  

  5
  0
  Votes
  5
  Posts
  34
  Views

  

  @jcaron Thanks a lot!
• K

  lte class persists after deepsleep
  • kjm  

  1
  0
  Votes
  1
  Posts
  13
  Views

  No one has replied

• C

  GPY GPIO Pins
  • carl declercq  

  12
  0
  Votes
  12
  Posts
  71
  Views

  

  @carl-declercq Not by default. If I need them, I add them as appropriate.
• R

  LTE Modem crashes
  • Richard Johnson  

  8
  0
  Votes
  8
  Posts
  99
  Views

  R

  I have this as my LTE version: UE5.4.0.2 LR5.4.1.0-50523 That seems the most up-to-date version I can find. I will add the ping test. That my prevent crashes in the post sends.
• B

  How to avoid enabling pull-down at boot
  • Benjamin Graf  

  5
  0
  Votes
  5
  Posts
  21
  Views

  

  @Benjamin-Graf That seems to be done there. The reason is power saving, setting all pins to input mode with pull-down enabled.