SPIM xfer reusability

[yf13]

Hi,

I need trigger repeated SPIM via PPI for a batch of samples until the given RAM buffer is full. Then I need start another round of batch SPIM with another buffer. 

How can we handle the other SPIM xfer setup in the interrupt handler? A simple solution in my mind is to use "nrfx_spim_xfer()" again with the changed RAM buffer and same flags, then retrieve the SPIM EEP/TEP and use them to setup the PPI again.  But this sounds like a lengthy process and I am wondering if there are more efficient ways? For example, can we simply start the new "nrfx_spim_xfer()" with the new RAM buffer and assume that EEP/TEP and PPI fabric can be reused?

Regards,

yf13

 

 

[yf13]

After some experiments, it seems that we only need setup the PPI fabric once and then prepare a xfer with a different buffer in the interrupt handler. 

So I will close this ticket.