nordic52840 Some GPIO cannot be controlledhttps://devzone.nordicsemi.com/f/nordic-q-a/61700/nordic52840-some-gpio-cannot-be-controlledHi： I noticed, P0.18 P0.19 P0.21 P0.22 P0.23 P1.00，recommended as QSPI. There is no way to raise the P0.22 pin using this code. But my own board must use P0.22 as a normal GPIO. What should I do to control these IO ports? sdk version: 15en-USTelligent Community 13Mon, 25 May 2020 06:13:38 GMTRE: nordic52840 Some GPIO cannot be controlledhttps://devzone.nordicsemi.com/thread/251378?ContentTypeID=1Mon, 25 May 2020 06:13:38 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ffaa7abe-6e87-4ebf-bd7f-8d40dfa99e06Simonr<p>Hi</p> <p>P0.22 should be set as a regular GPIO by default. The fact that it is recommended to be used for QSPI is just a recommendation and nothing else.</p> <p>P0.18 however, is by default the reset pin and is the&nbsp;<strong>only</strong> pin that can be used like this.&nbsp;</p> <p>To configure a pin as output this should be sufficient:&nbsp;<strong>nrf_gpio_cfg_output(pin_number);</strong></p> <p>Best regards,</p> <p>Simon</p><div style="clear:both;"></div>