https://devzone.nordicsemi.com/f/nordic-q-a/7410/spi-slave-not-workinghi i am trying to setup a connection with CP2130 with nrf51. i am using nrf6310 kit. i flashed the spi slave example into into nrf51. on nrf51 these are the connection pins -&gt; SPIS_MISO_PIN; (pin 20 mapped to p.2.4) SPIS_MOSI_PIN; ( pin 22 mapped to pen-USTelligent Community 13Wed, 16 Sep 2015 08:01:05 GMThttps://devzone.nordicsemi.com/thread/26360?ContentTypeID=1Wed, 16 Sep 2015 08:01:05 GMT137ad170-7792-4731-bb38-c0d22fbe4515:88c204fc-096f-401d-8029-97a0cf0892d3Stian R&#248;ed Hafskjold<p>Clock frequency of 6 and 3 MHz will not work. Max is 2MHz according to the product spec. Try to lower the speed to 1 MHz or something to be sure. You defined the right board so that the pins are set correctly (define BOARD_NRF6310)? Which SDK version are you using?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/26359?ContentTypeID=1Tue, 09 Jun 2015 21:33:38 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4ce8ec56-b357-4e60-8d4c-d8d13dd58e9cdeependra<p>i checked the SEMSTAT register there is no change in that. register value is always zero. please suggest something</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/26358?ContentTypeID=1Mon, 08 Jun 2015 23:01:24 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3978651c-7125-441c-aa39-4ec99de8bdcedeependra<p>i checked master lines SCK , MOSI ,CS on scope its working good. i added 7.1us delay after CSN goes low for the data to be clocked out but still no result. i tried using nrf51 as a slave and PSOC 5lp as a master in both the cases no result.</p><div style="clear:both;"></div>