unable to flash micropython to esp 32: open serial error

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apollodriver
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unable to flash micropython to esp 32: open serial error

Post by apollodriver » Fri Sep 13, 2019 11:14 am

dear community

issue: unable to flash micropython to esp 32: open serial error, please try again. hope to connect internet and try again.

pretty new to micropython - want to flash micropython to esp 32 ( resp 8266) board.

cf this docs: https://maker.pro/esp8266/tutorial/usin ... h-upycraft

getting this errors all the time.
open serial error, please try again.
hope to connect internet and try again.
current version only open py txt json ini file.
hope to connect internet and try again.
hope to connect internet and try again.

any idea;

many thanks for any and all help in advance.
Last edited by apollodriver on Fri Sep 13, 2019 1:36 pm, edited 1 time in total.

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Roberthh
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Re: unable to flash micropython to esp 32: open serial error

Post by Roberthh » Fri Sep 13, 2019 12:14 pm

Which operating system do you use on the PC?

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jimmo
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Re: unable to flash micropython to esp 32: open serial error

Post by jimmo » Fri Sep 13, 2019 12:16 pm

Hi,

Which ESP32 board do you have? It's likely that you need to install drivers for the serial adaptor. That page has instructions for the CP210X but it's possible you need a different driver?

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apollodriver
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Re: unable to flash micropython to esp 32: open serial error

Post by apollodriver » Fri Sep 13, 2019 1:11 pm

Hello dear RobertHH hello dear Jimmo,


first of all many thanks for the quick reply.

i run Win 7

the hardware:

a. Joy-IT-Node MCU ESP8266

.. and besides that i also tried it with the following

b. ESP32-T Development Board CP2102 mit Espressif ESP-WROOM-32 IoT WLAN & BLE Modul


i have installed the > CP210x_Universal_Windows_Driver.zip


by the way: i could try to do all that on a linux machine. - on a MX-Linux-Sytem


guess: i am pretty sure that i have forgotten something...


love to hear from you again
apollo :D

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Roberthh
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Re: unable to flash micropython to esp 32: open serial error

Post by Roberthh » Fri Sep 13, 2019 2:33 pm

When the ESP8266 or ESP32 is plugged in, please open yout windows device manage and look, which COM devices are registered. The one for the ESP should disappear if you unplug it. You may need to refresh the window.

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apollodriver
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Re: unable to flash micropython to esp 32: open serial error

Post by apollodriver » Mon Sep 16, 2019 9:43 am

dear Robert

many thanks for the quick reply - we ve tested the regarding ports and found that this part of the process is working pretty well.

i e .
- if we plug the USB-cable to the port the icon in the windows device manager appears and
- if we unplug it dissaperars
Roberthh wrote:
Fri Sep 13, 2019 2:33 pm
When the ESP8266 or ESP32 is plugged in, please open yout windows device manage and look, which COM devices are registered. The one for the ESP should disappear if you unplug it. You may need to refresh the window.
any further ideas of what can happen / what we can do now?



BTW;: we downloaded the esp-tool and tried to get the job done with this tool - but it did not start to work
esp_tool_.jpg
esp_tool_.jpg (17.83 KiB) Viewed 368 times
any ideas on that process?

which procedure would you suggest to follow - which path to follow to get the esp flashed with the Micropython!?

we look forward to hear from you again


apollo
regards from
Heidelberg ;)

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Roberthh
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Re: unable to flash micropython to esp 32: open serial error

Post by Roberthh » Mon Sep 16, 2019 9:50 am

I think we are talking about a different esptool. The one you need is: https://github.com/espressif/esptool/bl ... esptool.py, which is a single python script.

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apollodriver
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Re: unable to flash micropython to esp 32: open serial error

Post by apollodriver » Mon Sep 16, 2019 10:15 am

hello dear Robert.





thanks - took this tool - here https://github.com/espressif/esptool
It works on Windows, Mac OS X, and Linux. For the official documentation, you can visit the esptool.py GitHub page.
Finding the Serial Port Name
Connect your board to your computer.
Open the Arduino IDE.

Go to Tools > Port.
Save your ESP8266 serial port name (in our case it's COM4)
Close your Arduino IDE software.
cf: https://randomnerdtutorials.com/flashin ... 2-esp8266/
Installing esptool.py in your computer
To work with esptool.py, you’ll need either Python 2.7, Python 3.4 or a newer Python installation on your system. We recommend using Python 3.7.X, so go to Python’s website and install it in your computer.
With Python 3 installed, open a Terminal window and install the latest stable esptool.py release with pip:
pip install esptool
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. Alle Rechte vorbehalten.

Code: Select all

C:\Users\Kasper>pip install esptool
Collecting esptool
  Downloading https://files.pythonhosted.org/packages/6c/bf/578443af2270ebeff78f
dfd30cef3a02433cc63b34a912936653a48526dd/esptool-2.7.tar.gz (83kB)
    100% |████████████████████████████████| 92kB 1.7MB/s
Collecting pyserial>=3.0 (from esptool)
  Downloading https://files.pythonhosted.org/packages/0d/e4/2a744dd9e3be04a0c090
7414e2a01a7c88bb3915cbe3c8cc06e209f59c30/pyserial-3.4-py2.py3-none-any.whl (193k
B)
    100% |████████████████████████████████| 194kB 4.3MB/s
Collecting pyaes (from esptool)
  Downloading https://files.pythonhosted.org/packages/44/66/2c17bae31c9066137957
11fc78045c285048168919ace2220daa372c7d72/pyaes-1.6.1.tar.gz
Collecting ecdsa (from esptool)
  Downloading https://files.pythonhosted.org/packages/23/a8/8aa68e70959e1287da91
54e5164bb8bd5dd7025e41ae54e8d177b8d165c9/ecdsa-0.13.2-py2.py3-none-any.whl (59kB
)
    100% |████████████████████████████████| 61kB 7.7MB/s
Installing collected packages: pyserial, pyaes, ecdsa, esptool
Could not install packages due to an EnvironmentError: [WinError 5] Zugriff verw
eigert: 'c:\\program files\\python37\\Lib\\site-packages\\pyserial-3.4.dist-info
'
Consider using the `--user` option or check the permissions.

You are using pip version 10.0.1, however version 19.2.3 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' comm
and.

C:\Users\Kasper>

run into user permission issues i guess ...

allways thought that i have admin-rights on this machine!?

any idea

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Roberthh
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Re: unable to flash micropython to esp 32: open serial error

Post by Roberthh » Mon Sep 16, 2019 10:19 am

You do not need pip. You can also download esptool.py from the link I gave, and use it locally.

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apollodriver
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Re: unable to flash micropython to esp 32: open serial error

Post by apollodriver » Mon Sep 16, 2019 3:36 pm

dear Robert

just want to share this with you... :

update:  finally were have moved one big big step forwards


 well we had three options  


this way - with the using-micropython-on-an-esp8266-with-upycraft
https://maker.pro/esp8266/tutorial/usin ... h-upycraft

this way: esp_tool via github 
https://github.com/espressif/esptool/bl ... esptool.py


and this way Learn to use MicroPython on a NodeMCU ESP8266 through uPyCraft with an LED sample code.
https://maker.pro/esp8266/tutorial/usin ... h-upycraft

reports here: viewtopic.php?f=2&t=6941&p=39462#p39462

finally it worked with this one we have had sucess ESP8266-Flasher :: ESP-IDF
http://www.dietrich-kindermann.de/esp_flashtool.html
https://pypi.org/project/wxPython/#files


it was working like a charme 
kuhlmann__flash_success_1.jpg
kuhlmann__flash_success_1.jpg (22.18 KiB) Viewed 332 times

we took this esp: (and i see that this is the wrong one - ) 


C:\Users\Kasper\Downloads\esp32spiram-20190913-v1.11-312-g22099ab88.bin

Code: Select all

Connecting....
Detecting chip type... ESP8266
Chip is ESP8266EX
Uploading stub...
Running stub...
Stub running...
Configuring flash size...
Auto-detected Flash size: 4MB
Erasing flash (this may take a while)...
Chip erase completed successfully in 13.2s
Flash params set to 0x0040
Compressed 1281760 bytes to 785761...
Wrote 1281760 bytes (785761 compressed) at 0x00000000 in 70.7 seconds (effective 145.1 kbit/s)...
Hash of data verified.

Leaving...

Done.

note i will have to try another than this esp: (and i see that this is the wrong one - ) 

C:\Users\Kasper\Downloads\esp32spiram-20190913-v1.11-312-g22099ab88.bin


i will try out later the week and will come back and report all the findings. 



have a great day 



note - i am so lucky that i have had a little success
:D

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