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LPSPI DMA

Question asked by Koorosh Hajiani on May 12, 2020
Latest reply on May 29, 2020 by Koorosh Hajiani

Hi,

My target is S32K148,

I'm doing DMA on LPSPI,

There's something that I can't justify :

DONE bit in the TDR DMA channels for RX/TX don't get set simultaneously whereas I think they should .

When the transfer is complete that means all the data on MOSI,and MISO has been transferred .

I'm under the impression when the major loop has completed its count the transfer is complete.

But my observation is that they are out of phase , when one is set the other is cleared and visa versa.

I assigned same priority of 0 to both channel.

Is this a normal behavior ? or there's something going on.

Please educate me.

Thanks,

Koorosh Hajiani

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