MicroPython

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  This topic is deleted!
  Mar 31, 2022, 7:55 PM • Eckaard le Rooux   Mar 31, 2022, 7:55 PM

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  Modbus on Fipy returning not values but request
  Mar 27, 2022, 1:37 PM • Tautvydas Bujauskas   Mar 30, 2022, 5:30 PM

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  T Mar 30, 2022, 5:30 PM

  So I was right, when i connected over UART to RS485 converter everything is working fine. This shloud be mentioned in docs, that you need to use RS485 converter and not to try connecting directly.
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  Library for opening and editing a picture?
  Mar 30, 2022, 2:19 PM • Adnan Sabovic 0   Mar 30, 2022, 2:19 PM

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  This topic is deleted!
  Mar 15, 2022, 4:51 PM • Flo Gritsch   Mar 15, 2022, 4:51 PM

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  Adding timeout to sys.stdin.read(1)
  uart telnet read data select • Feb 19, 2022, 6:35 PM • berni   Feb 21, 2022, 10:18 AM

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  B Feb 21, 2022, 10:18 AM

  @jcaron unfortunately, there is any method with the stdin and I haven't found any way to interact directly with the telnet server. My previous implementation used the UART, but then I realized that I was able to read from Telnet, but no way to type anything. Also, the telnet connection was quite slow and unreliable for some reason (time out when login/password). With stdin it works much better, but not typing anything will block the application forever.
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  Thermal print head for a parking management system based on Raspberry Pi pico and HMI
  Nov 2, 2021, 6:47 AM • Andy Smith   Nov 2, 2021, 6:47 AM

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  [solved] MQTT and tls
  mqtt ssl tls • May 1, 2019, 8:02 PM • tttadam   Oct 29, 2021, 2:00 PM

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  M Oct 29, 2021, 2:00 PM

  Just want to share actual working sample. NOTE: Checking server certificate is DISABLED in this case. You need CERT_REQUIRED or CERT_REQUIRED judging from documentation. But, by some reason in my build ussl.CERT_REQUIRED gave "...object has no attribute...". # --------------------------------------------- # Tested setup: # - Traefik Proxy 2.5 (Let's Encrypt Cert) # - Mosquitto 2.0.16 # - MicroPython 1.17 # ---------------------------------------------- from umqtt.simple import MQTTClient HOST = "<HOST>" # Without server_hostname it wan't connect (by some reason) ssl_params = {"server_hostname": HOST} c = MQTTClient("<client_id>", server=HOST, port=8883, user="<username>", password="<password>", # Need keepalive > 0 or got MqttException(2) keepalive=10, ssl=True, ssl_params=ssl_params)
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  gzip file problem
  Sep 21, 2021, 6:25 AM • kjm   Sep 22, 2021, 7:42 PM

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  Sep 22, 2021, 7:42 PM

  @kjm said in gzip file problem: if '\x1f\x08' what if you write if b'\x1f\x08' in
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  The received data is not complete
  Aug 19, 2021, 8:27 AM • Andy Smith   Sep 10, 2021, 6:07 AM

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  N Sep 10, 2021, 6:07 AM

  @Andy-Smith that line reads a GPS response which are coming in at 10 lines or more each second (depending on the gps) and the function falls out the end, only printing the ones that I am interested in decoding.
• K

  micropython maths lib?
  Aug 1, 2021, 11:59 PM • kjm   Aug 1, 2021, 11:59 PM

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  socketio
  Aug 1, 2021, 2:59 AM • KJ Leong   Aug 1, 2021, 2:59 AM

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  MQTT Security LTE-M
  mqtt • Jul 26, 2021, 8:12 PM • Thomas Thomas   Jul 26, 2021, 8:12 PM

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  zip file extractor
  Jul 17, 2021, 5:18 AM • kjm   Jul 21, 2021, 7:12 AM

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  K Jul 21, 2021, 7:12 AM

  @Gijs Yeah, it just occurred to me if there was a compiled version of boot.py on the device I could compare it's size to the gzip size for the same file.
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  Python or C driver for SC16IS762 dual SPI UART?
  Jul 15, 2021, 6:08 AM • Andrew Starr   Jul 16, 2021, 1:30 AM

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  A Jul 16, 2021, 1:30 AM

  @Elizar I suspected as much. Thanks
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  check if thread is running
  threading watchdog • Jul 4, 2021, 6:12 PM • tttadam   Jul 6, 2021, 3:27 PM

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  J Jul 6, 2021, 3:27 PM

  @Gijs Thought of about the same thing. I would just add a short sleep at the end of the loop, so that in case it fails very quickly it doesn't go into a tight loop, especially if the code in the thread is sending anything (over the network or to a device connected via I2C or SPI etc.). Of course it relies on the contents of the function being able to restart a second time. I'm not sure this is 100% fool proof as I believe there are cases when some conditions will not result in proper exceptions being thrown, so of course using and feeding WDT (or an external watchdog) may be a good idea as well.
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  _thread vs uasyncio
  thread uasyncio • Mar 24, 2021, 12:09 PM • tttadam   Jul 2, 2021, 9:49 AM

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  B Jul 2, 2021, 9:49 AM

  @peterp Note that the 'event.py' which defines a semaphore for asyncio does not load on the latest version, as it depends (for ThreadSafeFlag) on being able to extend uio.IOBase. This base class is not used in the pycom micropython uio port apparently... This is an issue to use asyncio on pycom ports as ThreadSafeFlag is the only way to do a semaphore from an ISR or other _thread task... any ideas?
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  usocket vs socket
  Jun 16, 2021, 4:03 PM • Hamed Talebi   Jun 16, 2021, 8:56 PM

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  G Jun 16, 2021, 8:56 PM

  Both are eventually the same thing :) Because of compatibility with Python, you can call import socket, which will import the usocket library. This is explained here: https://docs.pycom.io/firmwareapi/micropython/ :)
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  Micropython interpreter differences between cmd line and program
  May 23, 2021, 1:32 AM • kjm   May 26, 2021, 1:37 AM

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  K May 26, 2021, 1:37 AM

  @robert-hh said in Micropython interpreter differences between cmd line and program: for i in range (2): print('i is 1' if i else 'i is zero') The if else inside (the print brackets) I should have known, to much time inside python 2.7, that's my problem. Tnx Rob.
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  MQTT with SSL gives error "OSError: -4480"
  May 5, 2021, 9:38 PM • Louis Henn   May 20, 2021, 5:55 PM

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  B May 20, 2021, 5:55 PM

  @Louis-Henn said in MQTT with SSL gives error "OSError: -4480": Now the only problem I'm getting is a MQTTException: 5. Seems like this means the server refuses the connection since my device is not authorised. Seems like this usually happens with an incorrect username/password, but I know mine is correct. I don't suppose anyone knows what this problem could be? I am fairly certain that is what it means. Double-check your password with a mosquitto client or some MQTT tester. Also, try against an MQTT test server which has no authentication.
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  Modbus Slave on MicroPython/LoPy4
  Aug 27, 2020, 8:03 PM • supergumby   May 14, 2021, 8:33 PM

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  E May 14, 2021, 8:33 PM

  @supergumby were you able to find and implement a modbus RTU serial slave on Pycom? We are looking for this as well and it is certainly strange that the Pycom implementation only contains the Master functionality.