SPI without SS possible? PSoC 4 BLE

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Anonymous
Not applicable

Hello everybody,

   

I have tried to run the SCB SPI component without a SS line and do not get

   

a communication or an unstable communication. Is it possible somehow to run

   

the SPI component as only one slave without the SS line?

   

With an UDB Slave it works better but not really stable as well.

   

Thanks and best regards

   

Andreas

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1 Solution
Bob_Marlowe
Level 10
Level 10
First like given 50 questions asked 10 questions asked

What are you connecting the PSoC to? Link to datasheet? SPI is an interface that requires an ss line, so you would need to create your own interface component which is doable, but not easy.

   

 

   

Bob

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3 Replies
Bob_Marlowe
Level 10
Level 10
First like given 50 questions asked 10 questions asked

What are you connecting the PSoC to? Link to datasheet? SPI is an interface that requires an ss line, so you would need to create your own interface component which is doable, but not easy.

   

 

   

Bob

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Anonymous
Not applicable

Hi Bob,

   

thanks, thats what I guessed as well and what I was already telling the colleagues

   

who designed the master without a ss line... 😉

   

I was hoping that there is some way to achieve it without creating my own component...

   

Andreas

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HeLi_263931
Level 8
Level 8
100 solutions authored 50 solutions authored 25 solutions authored

As Bob said, you can handle SS via a control register. So you don't need your own component, but can solve it in software.

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