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USB drivers working previously with K50 family stop working on MK20DX128VLF5

Question asked by Maxim Osipov on Sep 12, 2013
Latest reply on Oct 3, 2013 by Maxim Osipov

After USB reset and first descriptor exchange DFN8 error is generated by the USB controller (device mode).

 

Error is observed on both USB Stack http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=MEDICALUSB&fpsp=1&tab=Design_Tools_Tab and K20 Freedom board USB CDC code.

 

Any hint on this issue? Working CDC code or recommendations on workarounds are highly appreciated.

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