Adafruit-Arduino IDE caused serial port to be greyed out

[traxda]

Under the Tools menu the Serial Port sub-menu is greyed out so I can't choose a port. Then, if I try to upload a sketch anyways I get this error: avrdude: usbdev_open(): did not find any USB device "usb"

I'm trying to use the Gemma board with the adafruit-arduino IDE on Win7.

Thanks

[Franklin97355]

Are you following these instructions? https://learn.adafruit.com/introducing- ... rduino-ide
The Gemma does not use a serial port to upload.

[snappawapa]

What was the resolution to this (if there was one)? I am having the same issues, and am unable to program my Gemma M0.

[danhalbert]

Hi - The original Gemma does not use a serial port but the Gemma M0 does. If you're having trouble uploading to your Gemma M0, try one of these things:

1. Double-click before you try uploading. Make sure the port is checked in Tools->Port after that.
OR
2. Double-click during uploading.

Also make sure you've chosen Gemma M0 and not Gemma. If Gemma M0 is not in your Boards menu, follow the Learn Guide's instructions about loading the right boards packages: https://learn.adafruit.com/adafruit-gem ... -ide-setup