https://devzone.nordicsemi.com/f/nordic-q-a/42164/add-one-new-button-failed-in-pca10056-hin pca10056.h, there are 4 buttons. I want to add one new button, //#define BUTTON_5 NRF_GPIO_PIN_MAP(1,06). However , it failed. I debug and find the issue, #define BUTTONS_NUMBER 4, the BUTTONS_NUMBER can not be set as 5 or more. If the BUTTONS_NUMBERen-USTelligent Community 13Tue, 08 Jan 2019 02:08:28 GMThttps://devzone.nordicsemi.com/thread/164397?ContentTypeID=1Tue, 08 Jan 2019 02:08:28 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b169b893-1ef8-4b7c-a1b7-31fe9c594d5ewyzl2000<p>Thanks!&nbsp;&nbsp;</p> <p>issue solved</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/164316?ContentTypeID=1Mon, 07 Jan 2019 14:51:34 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6d52160c-d9d6-4484-b8ce-ed166da1549eSigurd<p>Try setting&nbsp;GPIOTE_CONFIG_NUM_OF_LOW_POWER_EVENTS in sdk_config.h to 5</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/164155?ContentTypeID=1Mon, 07 Jan 2019 08:13:52 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e1f4feb8-0427-4cfc-a126-a6f2d8300095wyzl2000<p>Hi !</p> <p>I debug,and find buttons_leds_init------bsp_init-------app_button_init-------nrfx_gpiote_in_init，</p> <p><span>in nrfx_gpiote_in_init</span>，err_code = NRFX_ERROR_NO_MEM.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/164097?ContentTypeID=1Sat, 05 Jan 2019 17:23:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:60395c69-d577-424a-a5de-33b6a3dfb3a9awneil[quote userid="61724" url="~/f/nordic-q-a/42164/add-one-new-button-failed-in-pca10056-h"]the&nbsp;<span>BUTTONS_NUMBER can not be set as 5 or more</span>[/quote] <p>How do you come to that conclusion?</p><div style="clear:both;"></div>