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SS pin does not switch to high after SPI RX

From yesterdays question https://devzone.nordicsemi.com/f/nordic-q-a/80411/state-of-cs-ss-pin-after-nrfx_spim_xfer I have done a logic measurement and I can confirm that after receiving data from SPI and the SPI driver returning data (with SS pin set to a specific pin number) the SS pin stays in LOW state. My SPI peripheral expects the SS pin to go HIGH when clock signal stops. Is there a way to configure this for SPIM or do I have to control the pin manually in this case?

This is NRF5 SDK15 with NRF52811

Thanks, 

Marcel

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