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  VS Arduino › Visual Micro › General Board › ESP32 Upload Error
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Very Hot Topic (More than 25 Replies) ESP32 Upload Error (Read 15916 times)
StockBrick
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Re: ESP32 Upload Error
Reply #20 - Jun 27th, 2022 at 9:40pm
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Yes, confusing. I’ll report on Expressif Github site as you suggest. I will also see if I can encourage Sparkfun to mention it in their guide. Thanks for your interest.
  
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Sylvain
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Re: ESP32 Upload Error
Reply #21 - Jul 24th, 2022 at 4:27pm
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Hi,
     I have almost the same problem,  With wemos esp32 the upload work, but with lolin esp32 upload fail, if I place a 2.2uf cap between GND and EN pin it's work, look like there is a timing problem to put the esp in bootmode.   

     Is it possible to modify the timing of the RTS and DTR pin?

Thanks
Sylvain Bissonnette
  
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Simon@Visual Micro
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Re: ESP32 Upload Error
Reply #22 - Jul 28th, 2022 at 2:14pm
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We have added an additional board.txt property to allow a configurable pause before the upload begins (example is 3s):
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upload.pause_before_ms=3000


This is available in the latest version (22.06.11.05) which is available for download from the top of the below board:
https://www.visualmicro.com/forums/YaBB.pl?board=VS_ARDUINO_EXT_RELEASES

If this does not help, can you enable the below options:
  1. vMicro > Compiler > Verbose
  2. vMicro > Compiler > Show Build Properties
  3. vMicro > Uploader > Verbose


And perform the Build and Upload, and send us the entire contents of the Output > Micro Build window so we can replicate the setup exactly.
« Last Edit: Jul 28th, 2022 at 3:19pm by Simon@Visual Micro »  
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Sylvain
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Re: ESP32 Upload Error
Reply #23 - Jul 30th, 2022 at 2:46pm
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I will try to remove the cap and add delay this week and keep you inform

Thanks
Sylvain Bissonnette
  
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StockBrick
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Re: ESP32 Upload Error
Reply #24 - Jul 31st, 2022 at 12:41pm
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Thanks @Simon@Visual Micro. I'm not clear on how to implement this. Is it a case of adding Local Board.txt to the project and adding the code upload.pause_before_ms=3000 as an override?
« Last Edit: Jul 31st, 2022 at 12:46pm by StockBrick »  
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Tim@Visual Micro
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Re: ESP32 Upload Error
Reply #25 - Jul 31st, 2022 at 2:38pm
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yes that is right
  
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StockBrick
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Re: ESP32 Upload Error
Reply #26 - Jul 31st, 2022 at 3:00pm
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With no "#" in front?

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# ESP32_BT_LSM9DS1_GPS_ESPMaster_BadElf_V02 build property overrides
upload.pause_before_ms=3000

  
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StockBrick
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Re: ESP32 Upload Error
Reply #27 - Jul 31st, 2022 at 5:53pm
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I'm still getting the error:
A fatal error occurred: Failed to connect to ESP32: Timed out waiting for packet header

I'll send output file via email.

Thanks
  
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Tim@Visual Micro
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Re: ESP32 Upload Error
Reply #28 - Jul 31st, 2022 at 8:40pm
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Ah I forgot that Visual Micro make the serial connection for the upload.

You might need to contact the author of the tool chain. You should also say what you have put in the board.txt in case it is causing non-standard upload.

This is the upload command. Please try it from a cmd prompt. You can see that it uses the esptool.exe which is part of the tool chain.

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sptool.exe --chip esp32 --port "COM8" --baud 115200 --before default_reset --after hard_reset write_flash -z --flash_mode dio --flash_freq 80m --flash_size 16MB 0xe000 ols/partitions/boot_app0.bin" 0x1000 _LSM9DS1_GPS.ino.bootloader.bin" 0x10000 _LSM9DS1_GPS.ino.bin" 0x8000 _LSM9DS1_GPS.ino.partitions.bin"
  
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Tim@Visual Micro
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Re: ESP32 Upload Error
Reply #29 - Aug 6th, 2022 at 7:26pm
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Off-Topic replies have been moved to this Topic.
  
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