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SPI slave using PE: detecting start and end of frame

Question asked by Isak Levinson on Jul 31, 2014
Latest reply on Aug 10, 2014 by Marek Neuzil

Hi,

 

I'm using PE to access SPI slave.

The problem is that I would like to know which byte is the first after CS goes low.

As far as I saw, PE doesn't support such a feature, it just receives bytes from the SPI and accumulates them.

Also looking at the SPI datasheet, didn't see that such an option is supported by the hardware.

I need it to simplify communication synchronization, so that I'll be sure each time a new message is starting.

I'm using the MK11DN512VMC5 processor.

Am I missing something here?

 

Thanks, Isak.

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