https://devzone.nordicsemi.com/f/nordic-q-a/47519/issue-with-nrf52840---spi-chip-selectWe are writing SPI drivers for RF chip and blocked on the below issue. The issue we are facing is the Chip Select line is not active(active low) until the TX transaction is completed. We are using EVENT_READY (function : nrf_spi_event_check) to checken-USTelligent Community 13Fri, 31 May 2019 11:31:35 GMThttps://devzone.nordicsemi.com/thread/190267?ContentTypeID=1Fri, 31 May 2019 11:31:35 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b80d31c4-8c61-461d-856b-e8f94d3ed876Aadishri GS<p>Turned out it was an issue in slave board. Thanks for the response!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/188173?ContentTypeID=1Tue, 21 May 2019 09:28:52 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a016438c-eb37-43e1-a88e-31bf15c8cdd3haakonsh<p>You need to use the END event. I believe the READY event only tells you that you can safely update the buffer pointer and buffer length registers (they are double buffered).&nbsp;</p><div style="clear:both;"></div>