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MSP432P401R: Multiple SPI Slave

Art Mecina
Genius 16645 points

Part Number: MSP432P401R

Hello Guys,

Good day!

Our customer wants to operate multiple SPI slaves from a single MSP432P401R as a master. Can he use any GPIO pins  (Ex. P2.3, P3.0, P3.5, P3.7) for slave select as long as he properly initialize them for SPI in his code?

Thanks to confirm!

Art

  • 0
    Guru 96485 points

    Yes. Use UCMODE=0 (and UCSTEM=0). He may find it convenient (not a requirement) to put all the select pins on a single port.

    Be a little careful about the phrase "for SPI" -- the SPI unit mustn't know anything about these pins. They should be standard GPIO-output (SEL=0) pins, wiggled using the usual OUT register operations..

  • 0 in reply to Bruce McKenney
    TI__Genius 16645 points

    Thanks Bruce!

    I'll let you know for any further inquiries. But i think it's okay to put this under resolved.

    Art

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