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We share the same source code over several different PSoC devices (PSoC 3 and PSoC 5) and use a varying amount of features. For some debug functions, I would like to test (precompiler - #ifdef) if in the current project a given resource is available. For instance, whether Port3 or Port 5 exists (on the package of course, I understand that the registers and hardware might be even there, just not externally connected), would be useful to a debugging tool that displays the status of each port.
cydevice.h and cypins.h define all the registers, I have checked also in designs that use a package where those pins don't exist.
I think the fitter must have a knowledge base for each device/package?
There is CYDEV_SRAM_SIZE and CYDEV_EE_SIZE, so for some resources the software can find the sizes.
But for instance,
CYDEV_IO_PC_PRT5_SIZE 0x00000008u
for a CY8C3866LTI-067, the 48 pin QFP package, that does not have port 5.
Andreas