MicroPython

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  Update to Micropython V1.13
  • Susan Mackay  

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  @Gijs said in Update to Micropython V1.13: You (@David-Neumair ) are indeed correct in that we need to be more transparent about our future plans. Gijs Hello @Gijs , I second that! Currently we've developed a product with pycom modules inside, and we need to add ULP feature to our end product in order to count pulses (flowmeter feature). We promised to our end users (in 2019-2020) that the modules would have that feature on a few months but at the moment we are waiting ULP feature to be added in pycom firmware. The only tutorial that we found is one from @oligauc https://forum.pycom.io/topic/5337/ultra-low-power-ulp-processor-part-1 but I believe Oligauc no longer works at or with pycom. I've tested this tutorial but I don't know what to do next. It's possible to add ULP feature? or is something pycom isn't going to implement? Kind regards!
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  _thread vs uasyncio
  thread uasyncio • • tttadam  

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  @robert-hh I have downloaded, and updated firmware and confirm it works! Thanks for you awesome support!
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  join() threads?
  • g0hww  

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  As my best knowledge NO. :( Threading in pycom threading is very limited. I am also looking for a solution for threading locks. You can check out uasyncio.
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  (Newbie) - filesystem
  • Mark Wills  

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  @robert-hh said in (Newbie) - filesystem: @Mark-Wills did you set ftp to passive mode? No I don't think I did. I'll check that - thank you!
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  [WPA2-ENT] Problem connecting to WPA2 Enterprise using PEAP-MSCHAPV2
  • Alephus  

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  @jcaron said in [WPA2-ENT] Problem connecting to WPA2 Enterprise using PEAP-MSCHAPV2: @Alephus did you provide the LoPy4’s MAC address to your IT department so they can allow it to connect? It might be the key to it all... I actually questioned them about it since in the instructions it says that Teachers and non-Teachers must inform the IT departement about their MAC address, but they say that Student accounts and the 2 test accounts im using dont require it. But i will request another test account linked to the LoPy MAC address to see if thats the case. Translation: < Note: Teachers and non-Teachers of the University must inform in SI&C (Information and Comunication Sistem) the MAC address of the equipment, to be able to connect to the eduroam network. >
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  OSError: [Errno 90] EMSGSIZE
  • Zino Henderickx  

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  @jcaron Yes I will try that. Thanks for the advice!
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  Anyone made a pyboard footprint for Kicad?
  • aadesh pandey  

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  Thank you for your response and support.
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  [solved] MQTT and tls
  mqtt ssl tls • • tttadam  

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  You can upload it either through FTP, or put it in the project folder and add the extension to 'upload file types' in the Pymakr Global settings (I think its already in there) Gijs
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  TSL2591 runtime error: Overflow reading light channels
  i2c library tsl2591 runtime error • • tttadam  

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  It looks like you are using signed intergers/numbers for the reading from the light sensor. When it reaches the half way value it wraps around and goes negative. If you simply define the data as an unsigned type does it fix the issue.
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  simple mqtt and wss
  mqtt wss • • tttadam  

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  @tttadam Did you try this? https://gist.github.com/ccooper21/cf956344c0a1428a0c1a9aa71edd4205
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  Timer.Alarm nested in another Timer.Alarm possible?
  • railmonitor  

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  @railmonitor You do not need the lamda function for setting the callback. Simply giving the name of the callback function is sufficient. Timer.Alarm(timer_sampler, s = 1, periodic = True) Obviously, the function timer_sampler has to be placed in your script before using if for the alarm callback notification, and the callback has to have a single argument, the alarm object.
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  Convert string to integer
  python • • misterlisty  

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  @robert-hh said in Convert string to integer: binascii.hexlify("\x12") On my gpy binascii.hexlify("\x12") gives b'12' Rob. How come I get bytes but you get a hex string?
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  Wipy pin Vin
  • ciccio  

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  @ciccio vin is the pin to supply the WiPy. When the module is attached e.g. to the expansion board, you can of course take power at that pin for other devices. But the WiPy is not the source of that power.
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  queue, double put blocks code
  • Doroana  

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  @Doroana, not sure if you have figured this out yet but when you create your instance of the queue, you can give it a parameter of the size of the queue. a = queue.Queue(10), this will create a queue with max size 10. The default value is 1.
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  Scheduling Tasks
  • joglekar.omkar  

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  You can create a timer chrono / alarm instance using the following API: https://docs.pycom.io/firmwareapi/pycom/machine/timer/
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  Camera image over MQTT
  low power • • robmarkcole  

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  @jcaron Dear Jcaron: Tnx for your reply. Sorry, if I couldn't make it clear. But, I now I have made it to sending a few hundreds of bytes now (upto 1KB). As soon as I am done with the final project, I will share my updates.
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  Communication with other lora device doesn't work
  bugs lora lopy4 feather m0 • • melkoutch  

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  @melkoutch hope you still read this as this thread is quite old. I stumbled upon it having the exact same problem (LoPy4 <-> Feather M0 in raw LoRa). Adjusting the spreading factor doesn't seem to solve it for me. Would you be able to post the code fragment that you used to successfully connect the two? Thanks a lot!
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  How to save Strings from UART the right way
  uart data strings • • SciWax  

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  @robert-hh Thank you so much for that input! I'm really new to Python in regards of MCU's, so there is still alot to learn for me. Now I'm less afraid, that something could go wrong. :)
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  Modbus Slave on MicroPython/LoPy4
  • supergumby  

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  Thanks. I did find that post when doing my initial searching. Before finding Pycom I was looking at just doing things in C on some other embedded processor like TI or NXP. Maybe I just didn't look hard enough, but I was surprised that they didn't have native canned Modbus libraries. Most people end up using FreeMODBUS ( https://www.embedded-experts.at/en/freemodbus/about/ ). This just blows me away since Modbus is the universal standard in industrial automation. Then I found the LoPy4 with a Modbus library and all the other communications libraries I wanted, too. Only to find out it is not a complete implementation. It would have been such a time saver if it was. uModbus looks promising. In fact, it looks like the pycom library imports from it. Looks like there is a port of FreeMODBUS for the ESP32 if anyone wants to go wading in C code ( https://github.com/espressif/esp-idf/tree/c77c4ccf6c43ab09fd89e7c907bf5cf2a3499e3b/examples/protocols/modbus ). Python is so much faster and easier, so I would prefer not to.
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  Sending json data through MQTT
  • DBA10  

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