PC don't see USB

[xamuk]

Hi! Please help me with my problem. I have self made board with MK22FN512VLH12. I have problem with USB. If i run USB examples, then my PC don't see my board. All code traced in debug mode without errors. My board based on FRDM-K22F. What could be the problem?

[xamuk]

I solve this problem. I don't connect VREG pin to VBUS  :smileyhappy: Thanks!

[kerryzhou]

Hi Dmitriy,

    That's very good to hear your problem is solved, and thanks for your hardware problem solutions sharing.

Have a great day,
Jingjing

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[kerryzhou]

Hi Dmitriy,

    What the USB example you are using?

    Did you also try the FRDM-K22F board and run the USB code in your PC?  Whether this board can work ok on your side?

Have a great day,
Jingjing

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