https://devzone.nordicsemi.com/f/nordic-q-a/46113/gpio-pins-don-t-work-after-use-twimPins are denied to work as GPIO after the TWIM &quot;Initialization -&gt; Deinitialization&quot; cycle. After deinitialization, respectively, disable pins from the periphery, using the function nrf_pin_cfg_default() But their further use as GPIO pins remains impossibleen-USTelligent Community 13Wed, 24 Apr 2019 09:25:53 GMThttps://devzone.nordicsemi.com/thread/183382?ContentTypeID=1Wed, 24 Apr 2019 09:25:53 GMT137ad170-7792-4731-bb38-c0d22fbe4515:944a3c63-71ac-4a29-a986-7a02a3d8d455haakonsh<p><span>&quot;</span><span>Pins are denied to work as GPIO&quot;</span><br /><span>&quot;</span><span>But their further use as GPIO pins remains impossible (the log levels do not change)&quot;<br /><br />I do not understand what your issue is, I need more information that describes your issue.&nbsp;<br /></span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/181821?ContentTypeID=1Fri, 12 Apr 2019 11:09:07 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1aa4a391-828f-49f5-99f1-be0570be43aesilivanov<p>What details?</p> <p>See link on topic.&nbsp;<a href="https://devzone.nordicsemi.com/support/220139">https://devzone.nordicsemi.com/support/220139</a>&nbsp;There are library files for working with I2C</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/181815?ContentTypeID=1Fri, 12 Apr 2019 10:32:22 GMT137ad170-7792-4731-bb38-c0d22fbe4515:fafe7f67-f53f-44f1-9794-b5575736326chaakonsh<p>&quot;<span>Pins are denied to work as GPIO&quot;</span><br />&quot;<span>But their further use as GPIO pins remains impossible (the log levels do not change)&quot;<br /><br />We need details...</span></p><div style="clear:both;"></div>