https://devzone.nordicsemi.com/f/nordic-q-a/54236/spi-slave-readout-returns-always-0Hi, i&#39;m trying to readout the who_am_i register of SPI slave ST lis2hh12 (a MEMS sensor). I followed the spi-example found in examples/peripheral/spi of SDK 15.3.0. I modified the parameters of spi_config, but it has no effect at all: The rx_bufen-USTelligent Community 13Mon, 11 Nov 2019 14:59:41 GMThttps://devzone.nordicsemi.com/thread/219519?ContentTypeID=1Mon, 11 Nov 2019 14:59:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c8dce557-6565-4cff-b5ce-17dff081cef7Neum_d<p>Thank you very much! I borrowed a 2-channel oscilloscope from a friend and as i started to connect the oscilloscope-channels to the pins CS and SCK, i saw that i used the wrong pins!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/219461?ContentTypeID=1Mon, 11 Nov 2019 12:40:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:17d57792-0cc9-4a66-8669-1934d10b353dKenneth<p>I recommend to get a logic analyzer and/or oscilloscope so you may observe the physical pins. For test if you connect MISO to MOSI, you likely will see that&nbsp;<span>m_rx_buf ==&nbsp;m_tx_buf.</span></p> <p>Kenneth</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/219452?ContentTypeID=1Mon, 11 Nov 2019 12:06:58 GMT137ad170-7792-4731-bb38-c0d22fbe4515:009a5c58-aedb-4b81-9767-532b37dc57a5Neum_d<p>I populate m_rx_buf[] to see, if its content changes. Yes, the content changes. Unfortunately, I do not have a logic analyzer.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/219448?ContentTypeID=1Mon, 11 Nov 2019 12:00:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e92bd915-49d7-449d-8153-f723863cf67aKenneth<p>Not sure why you are populating&nbsp;m_rx_buf[] with values, since that is the values received on MISO. Do you have a logic analyzer to observe data on the SPI lines?</p><div style="clear:both;"></div>