https://devzone.nordicsemi.com/f/nordic-q-a/36853/nrf52832-some-gpio-output-does-not-have-high-levelAs picture, This is the external circuit of 52832, and I&#39;ve drawn out P0.09,P0.10,P0.17,P0.18,P0.19,P0.22 of these six gpios, each of them for control purposes, and now P2 has nothing attached to it, it&#39;s suspended.In the program, I set up these 6 gpiosen-USTelligent Community 13Thu, 26 Jul 2018 06:06:16 GMThttps://devzone.nordicsemi.com/thread/141447?ContentTypeID=1Thu, 26 Jul 2018 06:06:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:49c8c370-28a4-4d21-947a-ccfa38e1fd7fvsion<p><em><span class="skip">Thanks,solve perfectly!</span></em></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/141441?ContentTypeID=1Thu, 26 Jul 2018 03:53:11 GMT137ad170-7792-4731-bb38-c0d22fbe4515:38f70847-ed38-436c-bb00-27c657d036eevsion<p><span>How should I modify my situation?</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/141439?ContentTypeID=1Thu, 26 Jul 2018 03:39:38 GMT137ad170-7792-4731-bb38-c0d22fbe4515:140365ba-5a23-43a9-8ac2-0e98f1ed6554mtsunstrum<p><span>P0.09 and P0.10 are magical NFC pins by default.</span></p> <p><span>If you do not need NFC functionality, you have to disable NFC functionality.</span></p> <p><span>See&nbsp;<a href="https://devzone.nordicsemi.com/f/nordic-q-a/10020/struggling-with-basic-gpio-read-on-nrf52">https://devzone.nordicsemi.com/f/nordic-q-a/10020/struggling-with-basic-gpio-read-on-nrf52</a></span></p> <p><span>If I remember correctly, your project needs to have a #define&nbsp;CONFIG_NFCT_PINS_AS_GPIOS preprocessor variable.</span></p> <p><span>You might also have to&nbsp;clear NFCPINS register in UICR register</span></p> <p><span></span></p> <p><span>If you search thru this forum for&nbsp;<span>P0.09&nbsp;&nbsp;P0.10 NFC&nbsp; ... you will see lots of other help on this. That should help to fill in the details.</span></span></p><div style="clear:both;"></div>