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USB CDC K60 virtual com problem

Question asked by josei on Jun 23, 2015
Latest reply on Jun 23, 2015 by josei

I´m using USB CDC Vritural Com Example (MQX 4.1)  on a own desing borad K60. The usb enumerate correctly on a desktop PC, send and recibe data. But when I  connect a notebook the device not enumarate.

 

The usb schematics is:

 

usbK60-EGSE-CU.PNG

 

The K60 ucontroller is powered by an external regulator

 

My software configuration is like:

 

SO: W7 64bit

RTOS: MQX 4.1.1

HW:MK60DN512ZVLQ10 - 144LQFP

Tool: CW10.6

 

To discard problems in the notebook drivers made a test with a frdmk64 and is listed correctly.

 

Someone can help me with this problem?

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