paul tang

Important changes to forums and questions

All forums and questions are now archived. To start a new conversation or read the latest updates go to forums.mbed.com.

10 years, 10 months ago.

kl25z's on chip usb on ubuntu

Hi,

Both USBSerial & USBMouse examples for kl25z's on chip usb don't work on ubuntu (dmesg: .... unable to enumerate USB device on port 1), while the other usb port (for opensda) on kl25z board works well and presented as /dev/ttyACM0.

Any ideas?

Regards,

Paul,

Do you have USB3.0 ports?

posted by Erik - 07 Jan 2014

1 Answer

francesco fantoni
10 years, 6 months ago.

I have same problem on Ubuntu 14.04, seems it is due to the fact that Ubuntu is using xhcdi even for USB 2.0 ports. If I disable it on BIOS setup, then kl25z running as USB hid devices is correctly recognised, otherwise I have an unable to enumerate issue