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MSP430F5638: GPIO 16 bit data transfer between two MCU's ports

Part Number: MSP430F5638


Tool/software:

Custom SBC with one MSP430F5638 and one MSP432P401R MCU's. Each MCU is running on a 2 second period, sleeping most of the time, then repeats endlessly.

430 PA (P1+P2) connected to 432 PB (P3+P4)

I can send a single variable from one to the other via PxIN and PxOUT, but want to send an array of ints in every 2 second period. Neither MCU has access to the others memory space. This seemed like a good idea when I designed the board, but am not sure how to proceed. Seems like what I might need is: dueling ISR's on each end, sending a single array element, until end of array. Did not find any TI code examples for this type of transfer.

Any experience with this or suggestions?

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