I uploaded several sketch using arduino IDE on Seeeduino Xiao without problem but when I wanted to upload another sketch it failed and the reason is the usb port is not appear neither in arduino nor Windows device manager.
I’m using windows 10. any idea?
One idea (beware of other reasons as well):
=> Delete the failing COM-Port assignment and let it reassign by Windows:
Run Device Manager from elevated command line:
> set DEVMGR_SHOW_NONPRESENT_DEVICES=1 > devmgmt.msc
Enable “Show hidden devices” in the menu, and uninstall grayed-out COM ports.
Sorry for late answer, my problem was that I was defined several pins were not existed pin 32, etc.
But I found the Seeeduino xia is very unreliable, for uploading the sketch I have spend a lot of energy, sometimes it works sometimes it doesn’t.
Sometimes it’s because of problems with the sketch you uploaded last time.Affects USB functionality.You can try bootloader mode by two resets .
It doesn’t work anymore, double tap of reset take it to boot loader mode(orange led) but no USB detected, I tried to upload boot loader using Stlink I had, but no success, another board I have started to change as well, first day uploaded sketch without any problem, now needed reset, probably the same thing, I switched back to ESP32 until some one find a solution for this problem. Thanks for the help.
I’ve been having a similar if not the same issue.
The Arduino editor loses connection to the port. I’d have to unplug the XIAO then plug it in again for it to be recognized. After doing this on and off for a few days the XIAO can no longer be recognized through another XIAO still works fine.
The bad XIAO still comes to life when I plug it in, but I can no longer upload programs to it.
I’m going to test it to see if I can upload a program through the SPI pins.
I’m sorry but that’s just nonsense. Clearly a defect with the design of the Xiao, as the issue is reported all over the place.