https://devzone.nordicsemi.com/f/nordic-q-a/43406/compilation-issueHi, I am new to Nordic development environment. I am compiling the some code developed by vendor for NRF5 SDK 12.2.0 I am getting errors such as Error1 snippet &quot;&#39;NRF_SAADC&#39; undeclared (first use in this function); did you mean &#39;NRF_ADC&#39;? &#39;NRF_SAADCen-USTelligent Community 13Fri, 08 Feb 2019 16:11:43 GMThttps://devzone.nordicsemi.com/thread/170170?ContentTypeID=1Fri, 08 Feb 2019 16:11:43 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ee26cde7-9826-43e4-b501-02c38a8b1499Nguyen Hoan Hoang<p>It looks like you are compiling nRF52 code in nRF51 project. &nbsp; Check if you have the target device defined somewhere (NRF52 or NRF51)&nbsp;</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/170086?ContentTypeID=1Fri, 08 Feb 2019 10:05:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ad7f0eb9-119d-4ac9-ac59-84a2580c3cdeSimon<p>I would recommend you to open the SAADC example in SDK 12.2 (located in <em>examples/peripheral/saadc</em>), and then search for the undeclared definitions (ctrl+shift+F).</p> <p>The defintion&nbsp;<span>NRF_SAADC is declared in the file <em>nrf52.h</em>, and you will need to add this header file to the include paths.&nbsp; The defintions&nbsp;SAADC_CH_LIMIT_LOW_Pos and&nbsp;SAADC_CH_LIMIT_HIGH_Pos is declared in <em>nrf52_bitfields.h.</em></span></p> <p><span>Best regards,</span></p> <p><span>Simon</span></p><div style="clear:both;"></div>