Support & Troubleshooting

• A

  BLE does not connect
  • Aleksandr Podgaysky  

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  @Meriç-SARIIŞIK Thank you for your help. Unfortunatelly, I have only one GPy. But I did few test. The BLE server test works fine. Android smartphone with BLE scanner app can easily discover, connect and read the GPy. The result is below. >>> Client connected Client disconnected Client connected Client disconnected I changed the name and mac in the client script to ones from my sensor. This script also does not connect. >>> >>> change_adv() mac: b'\xf4\xe0\xd5\x1c\x90Y' Traceback (most recent call last): File "<stdin>", line 1, in <module> File "<stdin>", line 19, in change_adv OSError: connection refused >>> But I discovered an interesting thing: if I run the BLE server first and run change_adv() after that thus GPy is able to connect to my sensor. My custom scripts connect successfully also. Note that "Client connected" and "Client disconnected" appear in the console but are absent in the change_adv(). >>> >>> change_adv() mac: b'\xf4\xe0\xd5\x1c\x90Y' Client connected services = conn.services() service: 6145 service: 6144 service: b'\x96KV\x94\xc0ms\x9a\x91L\xcc(\xb80\x02G' service: b'f\x9a\x0c \x00\x08\xa7\xba\xe3\x11\x06\x85\xc0\xf7\x97\x8a' >>> Client disconnected The mac and the services are from my sensor. This situation makes me think the problem is in the firmware. But I re-updated the firmware, CONFIG, and NVS and it does not help.
• J

  HTTP POST request fails with "IndexError: list index out of range"
  • Jan Dillmann  

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  @jcaron Okay, I finally figured it out… Unbeknownst to me, deep in my router's settings was a "security" feature active that tries to block malicious outgoing requests. Not having a User-Agent header apparently qualifies as malicious, so the POST requests from the GPy were blocked. cURL on the other hand adds it's user agent header, so these requests from my laptop in the same wifi worked just fine. Adding a User-Agent header (and disabling this feature in the router) did the trick – HTTP requests work as expected now.
• J

  GPy rebooting because of Pybytes watchdog?
  • Jan Dillmann  

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  Ah sorry, my mistake! Good to hear it works :)
• S

  Pycom GPy fails to attach with Things Mobile SIM
  • snebot snebot  

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• S

  Pyscan NFC/Rfid reading Issue
  • SSerravezza SSerravezza  

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  Great work! I was indeed expecting the issue to be something like this, but had a hard time testing without a working sample. Let me know if that works for you, and I'll have it changed in the libraries!
• A

  Guru Meditation Error: sqnsupgrade.info()
  • Aleksandr Podgaysky  

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  As mentioned on the LTE modem firmware update page: https://docs.pycom.io/updatefirmware/ltemodem/ the 5.2-48829 update is a two-step process. You'll first need to load file 1, and then file 2: https://docs.pycom.io/updatefirmware/ltemodem/#note-on-updating-to-cat-m1-52-48829 :)
• A

  Problems with Pybytes and Lopy4
  lopy4 pybytes problem • • Adrián Alonso Vilar  

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  @Gijs This is what I get: >>> pybytes.smart_config(True) Smart Provisioning started in the background See https://docs.pycom.io/smart for details >>> Guru Meditation Error: Core 0 panic'ed (LoadProhibited). Exception was unhandled. Core 0 register dump: PC : 0x4015259c PS : 0x00060f30 A0 : 0x80152bff A1 : 0x3ffd3860 A2 : 0x00000000 A3 : 0x00000001 A4 : 0x3ffdfbbc A5 : 0x00000001 A6 : 0x000000fe A7 : 0x00000001 A8 : 0x800967f0 A9 : 0x3ffd3880 A10 : 0x00000003 A11 : 0x00060f23 A12 : 0x00060f20 A13 : 0x00000001 A14 : 0x000000fe A15 : 0x00000000 SAR : 0x00000020 EXCCAUSE: 0x0000001c EXCVADDR: 0x00000010 LBEG : 0x40094230 LEND : 0x4009425e LCOUNT : 0xffffffff ELF file SHA256: 0000000000000000000000000000000000000000000000000000000000000000 Backtrace: 0x4015259c:0x3ffd3860 0x40152bfc:0x3ffd38a0 0x401583ac:0x3ffd38d0 ================= CORE DUMP START ================= ================= CORE DUMP END ================= Rebooting... ets Jun 8 2016 00:22:57 rst:0xc (SW_CPU_RESET),boot:0x12 (SPI_FAST_FLASH_BOOT) configsip: 0, SPIWP:0xee clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00 mode:DIO, clock div:1 load:0x3fff8020,len:8 load:0x3fff8028,len:2128 load:0x4009fa00,len:19760 entry 0x400a05bc It stays at this point until I reboot or something. And when I press reset it goes back to the loop problem.
• D

  Chirpstack US915 does not save in Pybytes
  • drf777  

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• M

  Connecting non-pycom devices to Pybytes for ML
  • Matt Walter  

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• L

  MQTT library conflict with pybytes
  • Laurens van Raay  

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  C

  I will also give this a try thanks for sharing! I am new to python and micopython, if stuck in such a problem for days... I changed firmwares over and over. Even got me an Windows PC (Mac User..) Again - thanks for sharing :)
• C

  Pybytes + MQTT
  • cromagnon  

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  Somebody posted this some time ago: https://forum.pycom.io/topic/6801/mqtt-library-conflict-with-pybytes/2?_=1613294236230, It should be in the documentation very soon. I feel like that would be a solution to your problem as well!
• J

  LoPy4 hangs on receive loop while in c-clas
  lopy4 hang receive c class • • Jamie  

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  while True: rx = s.recv(64) time.sleep_ms(10) if rx: time.sleep_ms(10) rxStr = str(rx).split("'") index = int(rxStr[1]) try: i2c.writeto(56, 255-index) except Exception as error: print("i2c",error) startTime = time.ticks_ms() s.setblocking(True) time.sleep_ms(10) try: s.send("ack") except Exception as error: print("send ",error) time.sleep_ms(10) s.setblocking(False) print(time.ticks_ms()-startTime) wdt.feed() @jcaron thanks for your response. The problem is in the s.send(). I added the setblocking() statements around the statement along with putting it in its own try/except but they are still resetting at least 12-16 times a day. Is there any thing else you think I should check? Gateway setting? I'm using a Multitech Conduit gateway that's running node-red. Thanks again
• M

  Intermittent/unreliable data transmission on TTNA/LORAWAN
  • Matt Walter  

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  @Gijs Perfect!! Thanks for your help.
• R

  USB device malfunctioned when connected to Windows
  • Roetz Bikes  

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  G

  Is that with- or without the Gpy inserted? If it's also getting quite warm, Im afraid its not looking very bright unfortunately. Can you identify which part is getting warm? In normal operation, some parts can get quite warm.
• T

  Is PyBytes down right now?
  • troy salt  

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• P

  Is PyBytes down today?
  • PycomDev RedMountainMakers 0  

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  Pybytes should be back up now!
• T

  Deploying release throws unhandled exception on FiPy device
  • Teemu Pyhäluoto  

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  Hi, Sorry I must have missed your topic last week, The ENODEV error occurs when the device is not available, for example like this: >>> open('/sd/file.py','w') Traceback (most recent call last): File "<stdin>", line 1, in <module> OSError: [Errno 19] ENODEV >>> open('/flash/file.py','w') <io.TextIOWrapper 3f94f010> >>> open('/lib/file.py','w') Which is basically the operation where it stops working. When I try to write a file to the SD card or lib folder on root, which is not there, it will return the error. Similarly, >>>open('/flash/lib/file.py', 'w') Traceback (most recent call last): File "<stdin>", line 1, in <module> OSError: [Errno 2] ENOENT Will give the error for NO ENTRY, as I did not create the lib folder in /flash/ You are probably supposed to put the files inside a flash or lib folder? Check the pymakr online interface to see if it is correct. Let me know! Gijs
• P

  Guru Meditation Error: Core 1 panic'ed (Cache disabled but cached memory region accessed)
  • Paula Mancilla  

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  very very thanks, it's works I can upload and run programs :D
• D

  "last connection" randomly reports a -5 second value for some devices
  • dnear1  

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  (Silently tagging @ahmadelmasri n this) I dont think its related to the firmware, but rather an update to the pybytes platform around the same time
• R

  Timers / Alarms
  • roy Taylor  

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  @roy-Taylor That's good. Just a hint for forum postings: If you enclose code in lines consisting of three backticks ```, it will be displayed properly.