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TMS320F28379D: Toggling GPIO from CLA

Jim Crawford
Prodigy 70 points

Part Number: TMS320F28379D

I'm trying to control GPIO pins directly from CLA1. I have the pins configured using code in CPU1 and I simply want to toggle the pins directly from the CLA. I'm trying to directly write to the associated GPIO register bit with no luck. I figured out how to get pointers to the proper GPIO register and bit number in the CPU1 code and pass this information to the CLA. I have been trying to set the register value using a pointer like *(ptr_to_reg)= 1. Again no luck. I've looked for an example with no luck. Some docs refer to using GPIOs to time-benchmark CLA tasks...getting access to that code would probably do the trick for me.

  • 0
    Prodigy 70 points

    I resolved my own issue. I had made a first-order mistake in the CLA memory setup. Indexing the SET and CLEAR registers for the proper GPIO output was different than I had seen anywhere else because of the CPU versus CLA memory configurations, but pretty easy to figure out in the end.