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Interfacing with Cypress FX2

Subject: Interfacing with Cypress FX2
From: Andrew Stagg <email@hidden>
Date: Fri, 16 Mar 2007 16:30:07 -0600
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Hello,

I am developing an application for sending XSVF data to an FPGA over USB using a Cypress FX2 chip. I've got a bulk in and a bulk out endpoint setup and I can successfully transfer data between the device and the host, but I am relatively new to IOKit and I was wondering if there is any concern with using global pointers to the interface and endpoints for each call to ReadPipeAsync() and WritePipeAsync(). This is a lot easier than going through the process of enumerating the interfaces and endpoints each time I want to read or write data... but I don't know if it might cause problems?

Thanks,
-Andrew Stagg
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