TMS320F28379S: Usage of SPISTEA with multiple SPI slaves

Jagbir

Hi,

I need to connect 2 SPI slaves with TMS320F28379S as the master. I am planning to use GPIO19(SPISTEA) as a CS for 1st slave and GPIO57(SPISTEA) as a CS for 2nd slave. Can you confirm if the approach is ok.

Thanks,

over 4 years ago

0 Yogeshwaran Shanmugam over 4 years ago

TI__Prodigy 500 points

Hi Jagbir,

Our expert will get back on this issue today.

0 Gus Martinez over 4 years ago in reply to Yogeshwaran Shanmugam

TI__Mastermind 30671 points

You can only connect SPISTEA to one slave, not two. You will need to configure one of the pins as a GPIO and control it directly using the CPU. Alternatively you can configure both pins as GPIO and control them using the CPU (recommended).

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TMS320F28379S: Usage of SPISTEA with multiple SPI slaves