https://devzone.nordicsemi.com/f/nordic-q-a/93380/problem-at-configuration-of-gpio-1-00Hi, When the code is executed, it blocked at line nrf_gpio_cfg_output(LED1); where #define LED1 NRF_GPIO_PIN_MAP(1,0) GPIO (output) works on port 0 but not on Port 1 (here the 0 pin) No problem on Port 0, pin 13. Only LED&#39;s are connecteden-USTelligent Community 13Mon, 31 Oct 2022 12:29:41 GMThttps://devzone.nordicsemi.com/thread/393223?ContentTypeID=1Mon, 31 Oct 2022 12:29:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:05fc0fa0-840a-447f-8be9-3fbfac5d7adcJared<p>Hi,</p> [quote user=""]<p>When the code is executed, it blocked at line&nbsp;</p> <p>&nbsp;nrf_gpio_cfg_output(LED1);</p>[/quote] <p>What do you mean by &quot;blocked&quot;, what is the return value from nrf_gpio_cfg_output(LED1)?</p> <p>Have you checked if the program asserts?</p> <p>regards</p> <p>Jared&nbsp;</p><div style="clear:both;"></div>