https://devzone.nordicsemi.com/f/nordic-q-a/45300/nrf52832-sdk-twi-as-slave-hetting-error-from-this-code-any-clue/** * Copyright (c) 2014 - 2018, Nordic Semiconductor ASA * * All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * * 1. Redistributionsen-USTelligent Community 13Sun, 24 Mar 2019 20:41:13 GMThttps://devzone.nordicsemi.com/thread/177971?ContentTypeID=1Sun, 24 Mar 2019 20:41:13 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0e3d6dfb-efb3-4b0e-91d5-b94b8dafb7bbJ&#248;rgen Holmefjord<p>Hi,</p> <p>You have not included the header file in the application:</p> <p><pre class="ui-code" data-mode="c_cpp">#include &quot;nrf_drv_twis.h&quot;</pre></p> <p>Also make sure that you have included the source file&nbsp;in the project as well, and enabled the driver module in your sdk_config.h file.</p> <p>Best regards,<br />Jørgen</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/177960?ContentTypeID=1Sun, 24 Mar 2019 12:34:44 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ddc80caf-6d2e-4b5c-8e7d-2eb6c8a68cefShahrear<p><img src="https://devzone.nordicsemi.com/resized-image/__size/320x240/__key/communityserver-discussions-components-files/4/pastedimage1553430877920v1.png" alt=" " /></p><div style="clear:both;"></div>