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21489 Variable Size SPI DMA (Slave)

Question asked by yli on Aug 1, 2014
Latest reply on Aug 7, 2014 by yli

Hi,

 

I have an SPI set up as a slave to receive unknown sized packets from the master, I understand that there will be a DMA complete interrupt when DMA counter is 0. However, the actual size of the packet is not know, but it will be smaller than 1024.

 

So if I set up the CSPI to 1024, will I get an interrupt when the master has completed the packet and release SPI_DS_I, but the DMA counter has not yet reached 0?

 

Thanks

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