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USB enumeratiom

Hello,

   I am using the TM4C123.  usb_dev_serial example works perfectly. I have taken that  code and ported it verbatim into anther project I have. I have kept all of the headers the same but when I plug in the USB that is in the OTG port on the dev board I get nothing. windows informs me that the device has malfunctioned and  windows does not recognize it. 

    This would point me in the direction of the .INF file. Its here that i dont know what to do. I assumed that because I was using all of the usb_dev_serial example headers/code that the usb_dev_serial driver would work. obviously that is not the case. I have a PID that TI gave me but am not sure what to do with it . Do I need to modify the usb_dev_serial.INF file to "match up" with my project? If thats the case how do I go about  doing that?

Thanks

Pat