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EZ USB Extender - changing example code to interrupt driven

Question asked by AstroMedGlen on Sep 8, 2009
Latest reply on Jun 9, 2010 by AstroMedGlen



    I have a 21369 EZ KIT with a USB Extender board. The example USB code using polling to monitor USB activity. Actually, it will not return from the function "adi_dev_Read()" until a host sends some USB data. I have yet been unsuccessful in modifying the example code so that it is Event or Interrupt driven. Has anyone tackled this before? The USB Extender board uses a PLX Net2272 chip. I'd really like to only service USB when there is an actual USB event, thus freeing up a great deal of processing and DMAing ( the provided PLX device drivers use DMA channel 0).