Firmware

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  Tensorflow Lite MicroPython support - I cannot use Pycom modules?
  Apr 19, 2022, 1:01 PM • Adnan Sabovic 0   Apr 25, 2022, 11:56 AM

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  A Apr 25, 2022, 11:56 AM

  @robert-hh I decided to not use esp32 cam as it can only operate at voltage above 4V, which is not useful for my setup. I have a question related to ESP32-WROVER-IE(16MB) chip. On which expansion board I should attach it and flash? This chip offers 16MB Flash and 8MB SPIRAM, somehing that I need for my project, but still no available boards on which this chip is attached.
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  Tensorflow Lite MicroPython support?
  Apr 14, 2022, 10:43 AM • Adnan Sabovic 0   Apr 15, 2022, 1:12 PM

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  A Apr 15, 2022, 1:12 PM

  @robert-hh Yes, indeed! I uploaded the new firmware and now everything works as expected. Thanks a lot for help and advices that you gave me!
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  LTE issues on FW 1.20.2.rc10 with double precision
  Mar 4, 2021, 7:00 PM • Christian Storm   Mar 14, 2022, 12:12 PM

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  C Mar 14, 2022, 12:12 PM

  @quentinmsl said in LTE issues on FW 1.20.2.rc10 with double precision: @Christian-Storm see : https://forum.pycom.io/topic/7328/pycom-firmwares-double-precision-float Hey @quentinmsl , I think I found an UART reading bug on FW 2.5. I opened an issue on GitHub. BR
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  This topic is deleted!
  Feb 28, 2022, 6:34 AM • Fidelia Felicity   Feb 28, 2022, 6:34 AM

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  /lib/ folder in /frozen/base
  Sep 8, 2021, 6:13 PM • techykermit   Feb 14, 2022, 6:26 PM

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  Feb 14, 2022, 6:26 PM

  I'm more involved with the techincal parts so I can fill in on some technical details for @Don-iot. We have seen this behavior with a batch using 2 out of 10 boards. What happens is the following: A building script downloads and compiles firmware for the devices. (SecureFirmware method is used, final image size is 2022224 bytes) The firmware gets flashed onto devices. On (in our tests) 8/10 units: The firmware gets flashed correctly and the device starts with no strange errors on first boot On (in our tests) 2/10 units: The firmware gets flashed, but the device fails to read and write to files (we get ENOENT errors). It also fails to import modules (module name not found errors) that other devices can import just fine. If you re-run the same script, with the exact same code being flashed enough times (in one case 4 flashes, in another case 8), a device that doesn't work (see 4.) boots up just fine with no errors at all. This makes us think this is a PyCom problem, since the hardware side and setup has been consistent (Don wrote more about it above). The flashing tool nor building tool reports no errors.
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  This topic is deleted!
  Jan 18, 2022, 9:24 PM • Dennis Dittrich   Jan 18, 2022, 9:24 PM

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  Strange Micropython Code Execution With Custom (But Unused) C-Code
  Dec 22, 2021, 5:27 PM • Johannes Rost   Jan 14, 2022, 11:45 AM

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  J Jan 14, 2022, 11:45 AM

  Most interestingly, it is always like that: the device runs for some time (in the realm of several hours), and after that, the described errors repeatedly appear in shorter cycles than the time span til the first appearance of the error. I think we were able to track the origin of the error down, at least in this specific environment (ESP32, Pycom 1.20.2.r6, custom Python code, also combination of custom Python and C code): All binaries compilled with xtensa 1.22.0-80 show this strange behaviour. All binaries compiled with xtensa 1.22.0-98 DO NOT show this strange behaviour (same device, same VM, also on other devices with different VM, underlying source code version with which tests were performed also differed a lot) So for now, this seems to be solved by simply use a more recent compiler. It would be very interesting why this is (seemingly) compiler-dependent? @pycom it could be worth to update the download link to the xtensa compiler. I will also open a Github issue, because since 23 days no Pycom member seemed to like to help here in the forum. It still leaves some bitter taste though, because how can we be sure that it never accours again with the newer compiler, only at some later point in time? Test duration was only around 5 - 6 days.
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  Pymesh crashes Lopy
  Mar 19, 2019, 11:41 AM • Jordan Reyes   Jan 10, 2022, 1:55 AM

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  J Jan 10, 2022, 1:55 AM

  hello @catalin, I I have followed the procedures to download the latest firmware through Pybytes and I am using pymesh microphyton API, the problem I have is that with the following code the system chashes or not connect whit the other nodes, I do not know if it is a firmware problem or what it is due to, I will appreciate your help. from network import LoRa from mesh import LoraMesh import ubinascii import socket import utime from LoraWan import lorawan import cayenneLPP import config import machine from machine import SD pycom.rgbled(0x0000ff) #blue time.sleep(0.2) pycom.rgbled(0x000000) sd = SD() os.mount(sd, '/sd') f= open('/sd/reenvio.csv', 'a+') r= open('/sd/reenvio.csv', 'r') os.listdir('/sd') while True: print('##################### Conectando MESH ##################') lora = LoRa(mode=LoRa.LORA, region=LoRa.US915, frequency = 904300000, bandwidth=LoRa.BW_125KHZ, sf=7) masterkey = ubinascii.unhexlify("12345678") pymesh = lora.Mesh(key=masterkey) pymesh.border_router("2001:dead:beef:caff::/64", 0) time.sleep(5) print("IPv6 unicast addresses: %s"%pymesh.ipaddr()) print("4") pycom.rgbled(0xff00) #GREEN time.sleep(0.3) pycom.rgbled(0x000000) #IP=mesh.ipaddr() #ipBR=str(IP[0]) #creando sockets: s_EID = socket.socket(socket.AF_LORA, socket.SOCK_RAW) s_EID.bind(config.puertoEID) s_BR = socket.socket(socket.AF_LORA, socket.SOCK_RAW) s_BR.bind(config.puertoBR) s_mesh=[] s_mesh.append(s_EID) s_mesh.append(s_BR) data= "hola" id=0 ip=0 cont=0 #escuchando mesh while cont<config.acumulador: time.sleep(4) paquete= Loramesh.receive_pack(s_mesh) if paquete!=None: data=paquete[0] ip=paquete[1] port=paquete[2] print("-----------PAQUETE:%d-------"%cont) print ('datos recividos: %s'% (data)) pycom.rgbled(0xff00) #verde time.sleep(0.2) pycom.rgbled(0xff00) #verde time.sleep(0.2) pycom.rgbled(0x000000) time.sleep(2) f.write('{},{},{}\n'.format(data,port,utime.localtime())) cont+=1
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  This topic is deleted!
  Dec 23, 2021, 9:18 AM • Jonas Nilsson   Dec 23, 2021, 9:18 AM

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  AttributeError: module 'sqnsupgrade' has no attribute 'run'
  Oct 8, 2021, 2:18 PM • sdfg sdfg   Dec 14, 2021, 8:22 AM

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  B Dec 14, 2021, 8:22 AM

  Attribute errors in Python are generally raised when you try to access or call an attribute that a particular object type doesn't possess. It's simply because there is no attribute with the name you called, for that Object. This means that you got the error when the "module" does not contain the method you are calling. But it is evident that the method is there, which leads to believe that may be the method was added by you in the source code after you had already imported the file (module). Or, some times packages get deprecated and they rename some functions. If that is true, then you may want to exit and reimport the module once again to be able to access the new method . You can do it in another way to reimport the module with changes without having to exit the interpreter is to do the following: reload(myModule) If you are using python 3.2 or 3.3 you should: import imp imp.reload(myModule) If running Python 3.4 and up, do import importlib, then do: import importlib importlib.reload(myModule) The importlib.reload() method reload a previously imported module. The argument must be a module object, so it must have been successfully imported before .
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  Pymesh Application crashing in loop
  Dec 13, 2021, 10:57 AM • Narashiman P   Dec 13, 2021, 10:57 AM

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  LoPy4 pybytes firmware 1.20.2.r6 pycom-fwtool not loading from web. Local file ok.
  Oct 31, 2021, 9:25 AM • Ian Lewis   Nov 10, 2021, 2:27 PM

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  I Nov 10, 2021, 2:27 PM

  @Ian-Lewis as of c. Nov 8th 2021, this issue has been fixed by Pycom. I.e. pycom-fwtool will successfully install the current version of lopy4 firmware (pygate, pybytes) 1.20.2.r6.
• 

  LIS2HH12 embedded temperature sensor
  enhancement • Jun 19, 2017, 8:30 AM • bartp   Nov 9, 2021, 9:31 AM

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  A Nov 9, 2021, 9:31 AM

  Hey, I sit here an i trye to read the temparature with the LIS2HH12 but it dosent works. What did you do that the LIS2HH12 give the Temperaturen out? I Hope so you see this post. Best wishes
• C

  firmware upgrading of sipy not working
  sipy • Oct 29, 2021, 1:49 PM • Calvin Foo   Oct 29, 2021, 1:49 PM

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  Pycom Firmwares double precision float
  other esp32 • Oct 28, 2021, 9:03 AM • quentinmsl   Oct 28, 2021, 9:03 AM

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  Problems with LoRaWAN ADR
  Oct 15, 2021, 1:59 AM • Simon Egerton   Oct 15, 2021, 1:59 AM

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  Other files than Python files in Secure Firmware Build - is it possible?
  Sep 8, 2021, 6:17 PM • techykermit   Sep 11, 2021, 3:26 PM

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  Sep 11, 2021, 3:26 PM

  @Gijs Thanks for the input, that sounds like an idea that can work.
• S

  SecureBoot and Encryption - Firmware OTA help
  Sep 8, 2021, 1:24 PM • Simon Egerton   Sep 9, 2021, 11:22 PM

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  S Sep 9, 2021, 11:22 PM

  Solved the problem. Boot partitions with the new firmware are different 0x10000 and 0x210000 and the bin.enc files produced are bin.enc and bin.enc_0x210000. Would be good if the docs page could be updated. Also for OTA (Device) (https://docs.pycom.io/updatefirmware/ota/) Method B works for unencrypted flash images with the file name appimage.bin. Would it be useful to update this FTP method to look for two image files names appimage.enc.bin and appimage.enc_0x210000 with the assumption that when these files are found in /flash/sys the board is running with secureBoot and Encryption enabled and updates the firmware accordingly?
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  SecureBoot and Encryption Issues - Unable to set efuses
  Sep 7, 2021, 2:26 PM • Simon Egerton   Sep 8, 2021, 12:24 PM

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  S Sep 8, 2021, 12:24 PM

  @peterp many thanks, this has solved the problem with both options working. Would it be possible to update the docs (https://docs.pycom.io/advance/encryption/) with this update?
• B

  which firmware update for expansionboard v2.1A?
  Sep 2, 2021, 1:22 AM • Beniamino Sarno   Sep 2, 2021, 6:14 AM

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  Sep 2, 2021, 6:14 AM

  @Beniamino-Sarno The old expansion boards do not need a firmware update. They are not programmable and simply work.