https://devzone.nordicsemi.com/f/nordic-q-a/16263/gpio-wakeup-from-system-off-not-workingThis is the code I am using to wakeup my system from OFF. It is not working. Kindly Help. #define Pin_0 0 static void gpio_init(void) { ret_code_t err_code; // Configure output pin for LED err_code = nrf_drv_gpiote_init(); APP_ERROR_CHECKen-USTelligent Community 13Sat, 17 Sep 2016 20:10:52 GMThttps://devzone.nordicsemi.com/thread/62151?ContentTypeID=1Sat, 17 Sep 2016 20:10:52 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9a82ce37-b445-4d72-ab42-e0907d046d37Stefan Birnir Sverrisson<p>Hi</p> <p>Seems to work fine on nRF51-DK if you change</p> <pre><code>nrf_gpio_cfg_sense_input(Pin_0, NRF_GPIO_PIN_PULLUP, NRF_GPIO_PIN_SENSE_LOW); </code></pre> <p>to</p> <pre><code>nrf_gpio_cfg_sense_input(BSP_BUTTON_0, NRF_GPIO_PIN_PULLUP, NRF_GPIO_PIN_SENSE_LOW); </code></pre> <p>because BUTTON_1 on the nRF51-DK maps to physical pin 17. I can see the LED toggle when I press the button.</p> <p>There are also useful <a href="https://github.com/NordicSemiconductor/nrf51-powerdown-examples">powerdown examples on Nordic&#39;s Github</a>, the system_off_wakeup_on_gpiote example and the system_off_wakeup_on_gpio example, which wake up from System-off on button press</p><div style="clear:both;"></div>