USB Device detection (AT91SAM9263)

Microchip in-system programming solution: SAM-BA

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Joined: Mon Mar 29, 2010 8:27 pm

USB Device detection (AT91SAM9263)

Mon Mar 29, 2010 8:43 pm

Our development team has been using SAM-BA to program SAM9263 for a couple of years now and some issues have come up that are no longer isolated issues.
On most PC's, there are no issues. We power up the SAM9263 and the USB Device is detected and SAM-BA can be used to program it. However, on some PC's, when I power on the SAM9263, the PC is coming up with the USB Device Instance ID of "VID_0000&PID_0000".
If this came up all of the time then I would say that there is an issue with the USB port on the PC, or a cable problem. However, the Device (SAM9263) will be detected about 5% of the time, and the same USB port works 100% with any other device.
Any suggestions would be appreciated.
Is this related to PC (usb ports) or could it be related to SAM9263 ?

FYI - The same devices will work 100% on some PC's, but show this behavior on others?


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