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USB Interrupt C6745

Ana Leticia
Intellectual 275 points

Hi,

I´m writing a code to get a USB CDC communication, as a device. By now, I have a issue with USB interrupt. The only interrupt generated is RESET or SUSPEND. I use a USB Protocol Analyser and I see the host (PC) send commands to my board but no data interrupt is been genereted by 6745 USB controller. Could anyone have an idea where could I check or verify my configuration. I use all code suggested in USB 2.0 Controller Reference datasheet but I have no sucess.

 

Thanks

  • 0
    TI__Expert 7435 points

    Ana,

    I would sugges you to use the BIOSUSB stack that is available for C67xx devices.  You could develop your CDC class app on top of the stack.   BIOSUSB stack is alreay well tested for MSC and HID applications and handles all the interactions with the USB controller.  In this way you would need to focus your energy on getting the CDC functionality working instead of having to work towards the complete solution working.

    regards

    swami