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USB-CDC

Hello all

I am Raju Kamal, a Student from University of offenburg, Germany. Now I am faceing a problem to implement the USB-CDC protocal by using MAX3420e interface with our Microprocessor.
Can any body send me the c source code for MAX3420e for USB-CDC.
It will be gratefull from me!!!

Best regards
Raju Kamal

Parents
  • my problem is now i can read but cannot write

    the final position is now if i send any data by the docklight or windows hyperterminal, it shows me transfer data but does not show receiving data.

    The above statements are very confusing to me.

    I don't know much about this, but normally, you should use an USB Analyzer to analyze what happens during the USB communication.

    A. USB Host to USB device -> OK.
    USB device to USB Host -> Failed.

    B. USB Host to USB device -> Failed.
    USB device to USB Host -> OK.

    Your problem is A or B?
    How do you know/confirm that, it is OK/Failed?

    Did you put a breakpoint at the beginning of the USB ISR to see what happens?

Reply
  • my problem is now i can read but cannot write

    the final position is now if i send any data by the docklight or windows hyperterminal, it shows me transfer data but does not show receiving data.

    The above statements are very confusing to me.

    I don't know much about this, but normally, you should use an USB Analyzer to analyze what happens during the USB communication.

    A. USB Host to USB device -> OK.
    USB device to USB Host -> Failed.

    B. USB Host to USB device -> Failed.
    USB device to USB Host -> OK.

    Your problem is A or B?
    How do you know/confirm that, it is OK/Failed?

    Did you put a breakpoint at the beginning of the USB ISR to see what happens?

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