LoPy

• J

  [SOLVED] NVS error=4354 on LoRa() constructor
  lopy • • jsp  

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  Could someone explain what consequences it brings in the operation of the device when these errors come out?
• F

  Sending packets via WiFi from Gateway to PC
  lopy wifi send data • • finnzc  

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  @ahaw021 @bnjroos Thanks for the information, I really appreciate it. I'd like to give a go for option A as it seems more straightforward. :)
• C

  Lopy: Files deleted after pushing reset button
  lopy pycom reset boot mode restart • • cylex  

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  @bucknall I am able to corrupt the file system pretty easily. Running 1.7.6FW ATM. It seems to be when the program has a file open and an error occurs. What is the file system running on these boards? It doesn't appear to be a journaling file system. It is way too easy to corrupt the file system and have it erase the whole flash. I am developing a BT application that can update any file on the device and really need protection against this type of failure. I'm already doing a double buffer approach with the file writes so I have a good copy of the target file before deleting the original and renaming the file. The issue is resetting the board in the middle of a file write causes any manor of flash corruption. Before someone says "don't do that", I try very hard to design my system to recover from any type of errors. The cardinal rule is that there should be no way to brick a unit doing an update. To that end, I test every kind of failure during updates to make sure the device remains in a operating state.
• A

  Setting LoPy frequency in LoRaWAN stack
  lopy lorawan frequency • • agotsis  

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  @jmarcelino Ok, I'll try with ABP as well and let you know. If this is the reason, then if i remove and re-set the channels after the join operation, wouldn't be "fixed"? UPDATE: With ABP all seem fine. I also tried again with OTAA. I noticed that in the github code the non-default channels were actually removed after join, whereas in my code this did not happen. So, when I added this code after join OTAA did work fine as well. Another remark: how do we know if we work with 3 or 8 channels? Many thanks @jmarcelino for your help!
• N

  Setting LoRa Frequency
  • nilbeing  

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  @Vercellotti look e.g. here https://forum.pycom.io/post/9105
• S

  Failed to connect Lopy with AWS and MQTT.
  lopy mqtt iot aws amazon • • scg94  

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• K

  Class Lora
  lopy lorawan • • kots  

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  Hi, it has a LoRaWAN stack implemented and certified by the Lora Alliance. It works with LORIOT server. Let me know if you need help. Regards... Béla
• R

  Problem with WiFi connection
  lopy wifi tutorial • • rahul  

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  @RobTuDelft thx for the help.
• S

  Lora<->Wifi Gateway and Threading
  threading lora gateway lora wifi • • spookyrufus  

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• K

  LDR sensor with Lopy
  lopy ldr • • kots  

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  Thank you both for your answers! Finnaly with ADC.ATTN_11DB it works!
• V

  Where to find AppEUI and Appkey for connect to ThingPark Wireless
  lopy appeui appkey thingpark wirel • • Vercellotti  

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• B

  Deepsleep and Pin value
  lopy deepsleep gpio • • bnjroos  

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  @robert-hh Perfect, I will have a look at it, thank you.
• 

  [SOLVED] ImportError: cannot import name Timer
  lopy lorawan • • drasko  

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  Upgrading firmware solved the problem.
• D

  Persist OTAA Keys / ABP Counter
  lopy lorawan otaa abp counter • • dbrgn  

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  Oh, I missed those. Thanks.
• B

  Symphony Link and LoPy
  lorawan ota symphony link l • • beyonlo  

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  @dangerdan02 It's clear, someone invested a lot of money to develop Symphony Link. But if they license it to "large customers" without a fee, why not license it to e.g. Pycom for one dollar or two per LoPy? Think about the possibilities. And they could still sell their gateways.
• A

  LoPy ADR does not seem to work
  lopy lorawan adr • • autodomain  

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  Did someone successfully connect to the Things Network (TTN) with ADR working? The TTN should have ADR enabled by default with the algorithm kicking in after 20 packets, yet even after 70 packets it's still at SF12BW125. The gateway is just next door, my packets have an RSSI of about -50 and a SNR of around 5-7. SF7 would still give plenty of margin. My LoPy firmware is at 1.7.3b2.
• 

  Pycom Firmware Update Tool failed to upload FW
  firmware update • • Thosch42  

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  Solved it. I used the pycom upgrader 1.1.1.b2 to downgrade to FW 1.6.0.b1. Afterwards, the upgrade to 1.7.5.b2 worked seemlessly.
• D

  Supported Data Rates
  socket data rate fsk • • dbrgn  

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• J

  How to save and restore LoRaWAN context using deepsleep
  lorawan deepsleep wake up • • jellium  

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  @jellium This is not possible yet, please see the existing topic: https://forum.pycom.io/topic/1350/strategy-for-lorawan-with-deepsleep-2
• 

  Lopy-Lopy Communication Distance is too short !!!
  lopy lora communication • • mkharibalaji  

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  @titi974 so last test was with sf7, we did it again with sf12 and managed to get 550 meters this time.