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pic 18f4550 USB malfunctioned

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Mishi

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Hello!

I encountered a problem when trying to make a Data Acquisition System via USB. When I plug in the USB in the computer it says: "USB device not recognized... one of the USB devices attached to this computer has malfunctioned, and windows..."

Does everyone know the nature of this problem(hardware/softaware), where could be the issue?

Thanks you,
Mike
 

Hi.
I think both hardware and software can cause this problem.
You shoud use some software like bushound to get data on usb bus. And see if the PC get right usb device describe table.
 

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