MicroPython

• 

  SI7021 I2C sensor
  lopy i2c temperature humidity si7021 • • tobru  

  3
  0
  Votes
  3
  Posts
  2326
  Views

  

  @crankshaft said in SI7021 I2C sensor: Try This; WOW! You're great, works like a charm... Thank you very very much!
• 

  Pymate android ; problem with "Downloading network initialization file"
  • arthurlutz  

  3
  0
  Votes
  3
  Posts
  1315
  Views

  

  Hi @Roberto thanks for the explanation. It seems like an awesome bootstrap procedure for wipy to integrate to an existing wifi network. I think these explanations should be part of the app in the add device process (at least for the first device). Is there a bugtracker for the android app (for example rooted devices won't need the user to type in the wifi password) ?
• T

  Bluetooth BLE default advertising UUID
  • TravisT  

  2
  0
  Votes
  2
  Posts
  1320
  Views

  T

  Also for extra reference as I try to piece this together here is what I am finding relevant code references. pycom modbt.c pycom-esp-idf, esp_gap_ble_api.c
• D

  wlan.isconnected() in AP mode
  • danielm  

  1
  0
  Votes
  1
  Posts
  901
  Views

  No one has replied

• F

  WiPy 1.0 SD reading problem shifting from v1.8.6 to v1.8.7
  • federico  

  2
  0
  Votes
  2
  Posts
  861
  Views

  

  As far as I know, the MicryPython versions you refer to are supported by micropython.org, not pycom.io. You might better ask at their forum http://forum.micropython.org/ or raise an issue at their github repository https://github.com/micropython/micropython. As user, I'm using the MicroPython.org builds too, since there is very little support for WiPy 1 by pycom.io, and at least some by micropython.org. And there is in general not too much interest in that module any more.
• I

  Wifi2 - Event loop MicroPython
  • iiLaw  

  1
  0
  Votes
  1
  Posts
  653
  Views

  No one has replied

• T

  Improvements to Bluetooth / BLE documentation
  • TravisT  

  4
  2
  Votes
  4
  Posts
  1391
  Views

  D

  @TravisT thanks for the quick reply. I found your email, somehow we missed it 5 days ago, apologies for that... We'll get back to you very soon.
• C

  Update problem with last updater
  lopys • • ChristianGardens  

  5
  0
  Votes
  5
  Posts
  1811
  Views

  C

  @abilio Daniel sent me by mail the last firmware. I have updated manually my Lopys. It is OK Thank for your help
• 

  Interrupt/callback design pattern?
  • mohpor  

  13
  0
  Votes
  13
  Posts
  4317
  Views

  

  @crankshaft I have faced a lot of crashes and been able to somehow circumvent them by some tactics (this shouldn't be this way though). This one is particularly unique in comparison. The crashes you have mentioned are of type LoadProhibited but this is an IllegalInstruction exception. I have spent over a week rewriting my whole application in a completely different architecture that uses a while True loop in main thread and therefore no Actual functionality happens in any thread/interrupt/callback, everything in main thread, but, in the end, I have the same error as before. I wish Pycom team would assist me with some support, but I guess they are very busy these days. My guess is, some of the built-in functions or objects (especially WiFi-BLE classes) are NOT thread safe, they are designed to be ran on a separate core (not threads) and they are causing serious memory issues with other codes. I have a vigorous logging mechanism for all my functions using try/except/finally blocks, and I should not face any unhandled exceptions, but they happen nonetheless. One more thing I have seen which is interesting is that, sometimes allocating memory for a variable requests enormous space in memory (obviously an under-flow of memory-address byte size) and that immediately causes LoadProhibited errors. I have seen sporadic exceptions regarding such phenomena in which an int for example requires 32004304343409 bytes to allocate (fictional number)! Memory management is a very serious and profound aspect of every language/compiler and it is obvious to me that Micropython implementation used for xPy boards is seriously flawed in a way that makes a production ready application a very challenging task for any developer.
• S

  Getting started guide LoPy
  • Stroggo  

  5
  0
  Votes
  5
  Posts
  2410
  Views

  T

  You could use mpfshell https://github.com/PMunch/mpfshell It works very well. Just put filename.py and get filename.py Must use the USB cable to work.
• S

  PAC and ID for SiPy + SiPy firmware update
  sipy sipy firmware update tool pac • • sk  

  5
  0
  Votes
  5
  Posts
  1870
  Views

  S

  @jmarcelino Thank you. That's what I needed to know :)
• M

  WiPy connection problem after upgrade to 1.5.0.b2
  • Makkus  

  8
  0
  Votes
  8
  Posts
  2024
  Views

  J

  @Makkus Thinking that a lot of us have the same problem! hope that it's stabilized in the next release!
• F

  Lopy can't reconnect to access point after connection is lost.
  • Feiko  

  1
  0
  Votes
  1
  Posts
  855
  Views

  No one has replied

• 

  crcmod
  • gertjanvanhethof  

  4
  0
  Votes
  4
  Posts
  1503
  Views

  S

  @gertjanvanhethof I have a DALLAS 1Wire implementation. I'm sure you can find look up values to change it to the CRC8 you require. def crc8Nib (data): #''' CRC8_TABLE_SML1 = bytes([0x00, 0x5e, 0xbc, 0xe2, 0x61, 0x3f, 0xdd, 0x83, 0xc2, 0x9c, 0x7e, 0x20, 0xa3, 0xfd, 0x1f, 0x41]) CRC8_TABLE_SML2 = bytes([0x00, 0x9d, 0x23, 0xbe, 0x46, 0xdb, 0x65, 0xf8, 0x8c, 0x11, 0xaf, 0x32, 0xca, 0x57, 0xe9, 0x74]) #''' try: crc = 0xFF # 0xFF seeded for x in data: t = (x ^ crc) & 0xFF crc = CRC8_TABLE_SML1[t & 0x0f] ^ CRC8_TABLE_SML2[t >> 4] return crc; except ValueError: pass
• M

  PyMate - deleting configuration names in list & LoPy setup failures
  • mbbest  

  6
  0
  Votes
  6
  Posts
  1954
  Views

  S

  @leelive Hi, The downgrading issues are also fixed for Windows so you should be able to downgrade. We found some ways to release memory but we're not sure if it's sufficient to fix the Pymakr sync issue. We'll let you know after testing this.
• L

  GPy Kickstarter campaign
  • loboris  

  2
  0
  Votes
  2
  Posts
  928
  Views

  

  Hi @loboris, there is not going to be a kickstarter campain for the GPy. It'll be availble on our pycom.io webshop and will be shipping in May.
• C

  Watchdog reason
  • cfaessler  

  2
  0
  Votes
  2
  Posts
  973
  Views

  

  Currently there is no way to distinguish this, but there will be in future firmware updates. Best, Roberto
• C

  Nice to have on Expansion board
  • cfaessler  

  1
  0
  Votes
  1
  Posts
  866
  Views

  No one has replied

• 

  ESP-IDF v2.0 Release Candidate 1
  • livius  

  7
  0
  Votes
  7
  Posts
  1981
  Views

  

  Thank you for answer
• 

  Update failing on Exception: "Failed to write compressed data to flash after seq 0"
  • arthurlutz  

  3
  0
  Votes
  3
  Posts
  1960
  Views

  

  Sorry for the noise. Running the procedure again, got it to work (maybe I was missing a power down cycle).