MSP432P401R: Multiple SPI Slave

Art Mecina

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

over 5 years ago

0 Bruce McKenney over 5 years ago

Guru 100845 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 Art Mecina over 5 years ago in reply to Bruce McKenney

TI__Genius 16795 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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MSP432P401R: Multiple SPI Slave