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I am not really into the whole fx3 stuff, but I want to add a simple control pin to my fx3 firmware. As a starting point I am using the slaveFifo2b-example application unchanged as it is so far. This is also the basic functionality of the whole system ( to read data via streamIn from fpga to pc via fx3 in 16bit mode, bulk_transfer).
Additionally I need a software control of the fpga via a simple pin for example, so it is enough to just set an fpga signal to high from outside using fx3. As I am just using 16 bit, I could maybe use GPIO = DQ as this control pin.
Unfortunately I have absolutely no idea how to add this functionality to my fx3 firmware (attached code-file). Could anybody help?