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When trying to use the ESP8266 Node MCU or Multiple Feather Huzzah's I get the following error. I can program Arduino Uno & Mega without issue.

warning: espcomm_sync failed
error: espcomm_open failed
error: espcomm_upload_mem failed
error: espcomm_upload_mem failed

I have tried all the many fixes on the web, the real issue is that all of these devices work fine with a windows machine. Also I use VMM and QEMU, I built a Windows 10 VM and Ubuntu 20.04 - When I share ttyS0 with either of these VM's I can program the 8266 just fine, but I can not directly from my host running 22.04. I can work with the VM's but I would rather not.

Any help would be appreciated.

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  • I'm curious to know whether or not you can connect to an already programmed board and get serial data in and out of it. Commented Jun 9, 2022 at 0:17
  • all of these devices work fine with a windows ... then your problem is with linux serial port ... nothing to do with Arduino ... you are asking at the wrong place Commented Jun 9, 2022 at 0:18
  • is it this problem? arduino.stackexchange.com/questions/86211/… Commented Jun 9, 2022 at 4:47
  • @timemage - I had the same issue will 4 esp8266's all had code running on them. The issue ended up being a conflict or something with the CP210x driver. I found this solution in a separate post - it fixed my issue and I was able to replicate and validate this worked on a second 22.04 machine. Commented Jun 13, 2022 at 16:37

1 Answer 1

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I found this solution in a separate post - it fixed my issue and I was able to replicate and validate this worked on a second 22.04 machine.

systemctl stop brltty-udev.service
sudo systemctl mask brltty-udev.service
systemctl stop brltty.service
systemctl disable brltty.service
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1
  • this solution work also for me. thanks a lot. but what a stupid error. Commented Jun 21, 2024 at 7:06

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