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I developed a firmware for FX2 . I tested it in a board with fx2 and spartan FPGA. It worked fine . Now I want to use the same firmware for another board. Iam using cypress driver. When I download the firmware, the device does not enumarate as cypress sample device , some times it is taking a long time to enumarate . When it does not enumarate either it goes as unknown device or it is not listed in the devices list .Can any one say what is the reason for this . I used the same PID and VID of the previous board . Can I use the same PID and VID.?
Good! You are half-way there :)
Now switch over to a Google window and enter "what is a usb sniffer".
If still wondering after checking out that information, then please come back with more specific questions.