AnsweredAssumed Answered

S32K 40 BITS TRANSFER SPI DMA

Question asked by Koorosh Hajiani on Mar 16, 2018
Latest reply on Apr 5, 2018 by Daniel Martynek

Hi,

My target is S32K and I'm trying to talk to a slave device on SPI.

The slave requirement calls for 40 bits transfer during which the Chip Select needs to be asserted.

 Processor Export  Does not seem to work for 40 bits (5 bytes)/frame. I got it to work for 32bits and I believe any multiple of 4 bits/frame. If this is true , is there a workaround available?

I even tried to configure the SPI for 8bits/frame and control the chip_select as a GPIO outside the PE code but I couldn't get it to work completely.

 

the project is attached.it is a modified version of an example project.

 

Thanks,

Attachments

Outcomes