How to program AT91SAM7S256 with USB

Microchip in-system programming solution: SAM-BA

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Posts: 1
Joined: Thu Feb 19, 2009 8:47 am

How to program AT91SAM7S256 with USB

Thu Feb 19, 2009 8:55 am

Please help me because i dont know what is heppening.
I have a board whith AT91SAM7S256. I've tried to program it whith SAM-BA and by connecting to USB.
I did all what was written in instruction.
I connected pin TST to H, turned on power, and waited about 10sek, then I switched it off, taked off the jumper, turned it on, and connected to USB port in my PC.
At this time the PC sholud find a AT91xx TEST BOARD, but it still telling me that cannot recognize USB device.

What can I do. I dont know what is going on?

Please help me?
Posts: 62
Joined: Tue Oct 30, 2007 3:39 pm

Re: How to program AT91SAM7S256 with USB

Sat Feb 28, 2009 3:38 pm


You can try to connect your board to another USB port. Something wrong may happen during the driver setup.

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