This is probably not really a NuttX question per se, but it relates to getting the MCAN interface for a sama5d2 to work properly. And you are all such knowledgable and helpful people :)
The MCAN controllers assume the base address of the message ram is at 0x200000+offsets. 0x200000 is the internal SRAM whereas everything else is in DDR from 0x2000000. I will readily confess that this side of programming is my very weakest!! I will, I believe, need to declare - place - MCAN related structures such that they (or at least some elements of them) are in SRAM. Is that possible? "CONFIG_MM_REGIONS" related maybe? What does the internal SRAM get used for as the system.map file lists nothing there at all. Or have I got it wrong and this isn't the way to sort it - perhaps the processor DMA "matrix" stuff (hope not - don't understand the datasheet section on this at all!)? Thanks! Tim.
