https://devzone.nordicsemi.com/f/nordic-q-a/42457/spiHi I&#39;m using SDK 15.2.0 with Nrf52 I used the example of SPI from the SDK ..\..\nRF5_SDK_15.2.0_9412b96\examples\peripheral\spi and I get this error ..\..\..\main.c(153): error: #20: identifier &quot;NRF_DRV_SPI_INSTANCE_0&quot; is undefined I addeden-USTelligent Community 13Mon, 14 Jan 2019 16:42:21 GMThttps://devzone.nordicsemi.com/thread/165573?ContentTypeID=1Mon, 14 Jan 2019 16:42:21 GMT137ad170-7792-4731-bb38-c0d22fbe4515:178ba409-42f5-4522-9a86-17e60b1b58efShimon_nohayo<p>Thanks - that helped!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/165475?ContentTypeID=1Mon, 14 Jan 2019 13:36:25 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c790f8fa-4451-43dc-85f8-eb9379e14303AndreasF<p>Hi.</p> <p>Looking at <a href="https://devzone.nordicsemi.com/f/nordic-q-a/34343/correct-way-to-merge-examples-from-sdk">this </a>similar question, have you defined the following in sdk_config.h?</p> <p><pre class="ui-code" data-mode="c_cpp">// &lt;e&gt; SPI0_ENABLED - Enable SPI0 instance //========================================================== #ifndef SPI0_ENABLED #define SPI0_ENABLED 1 // delault: 0 #endif // &lt;q&gt; SPI0_USE_EASY_DMA - Use EasyDMA</pre></p> <p>Best regards,</p> <p>Andreas</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/165307?ContentTypeID=1Sun, 13 Jan 2019 04:10:51 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ecc39045-b44d-416d-9118-db21c47aeb5cnszmnsky<p>Hi</p> <p>It sounds like you have not enabled use of the SPI.</p> <p>Are you using the example project as is? I just loaded the SES project under SDK 15.2&#39;s PCA10040 ...\examples\peripheral\spi and it compiled without issue. Also I don&#39;t see a line 153 in main.</p> <p>Looking at the project, it appears that NRF_DRV_SPI_INSTANCE_0 is defined in nrf_drv_spi_h&nbsp; if NRFX_SPIM0_ENABLED or NRFX_SP0_ENABLED (see line 121-127). Both of those defines are found in sdk_config.h</p> <p></p><div style="clear:both;"></div>