Conditions for NRFX_SPIS_XFER_DONE event Trigger

[mystic_harbor]

I am using SPIS for my project. I am manually toggling CS for the peripheral. I get NRFX_SUCCESS for nrfx_spis_buffers_set() function. Also, when I probe the CS signal on oscilloscope, I see that CS transitions from low to high state. However, I am not getting NRFX_SPIS_XFER_DONE event.

My code is looking for NRFX_SPIS_XFER_DONE event to proceed further. I am not sure what will make  NRFX_SPIS_XFER_DONE event to get triggered as I have buffers set appropriately (getting NRFX_SUCCESS) and also CS going to High state. 

I am using NRF53 with nrfConnect SDK

[mystic_harbor]

Thank you for responding.

No, I want to use nRF as SPI Slave itself. I only mentioned that <NRF_PSEL(SPIS_CSN, 1, 12)> command in overlay file doesn't work for SPIS and works only for SPIM. if its included when SPIS is enabled, it throws build error

[Einar Thorsrud]

Hi,

OK. So another (or he same?) nRF is acting as an SPI master in addition to the SPI slave, then? I think we need to back-track a bit so that we get a better understanding of the basics of what you are doign here. I suggest we continue with that in the other thread for now, and then we can update here with the conclusion.