https://devzone.nordicsemi.com/f/nordic-q-a/34144/regarding-gpio-functionalityhi, We are using nordic nRF52832 in our project as per our requirement we have to implement sleep and wake up mode with the help of button interrupt. our use case is that after long press of 3 seconds device starts advertising(exit sleep mode). anden-USTelligent Community 13Sat, 23 Feb 2019 05:54:10 GMThttps://devzone.nordicsemi.com/thread/172600?ContentTypeID=1Sat, 23 Feb 2019 05:54:10 GMT137ad170-7792-4731-bb38-c0d22fbe4515:da17c739-1dde-4069-a753-9c39406a6550vjgarg<p>Thanks for your reply Einar Thorsrud</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/131497?ContentTypeID=1Wed, 09 May 2018 11:55:07 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d9253f84-61df-439f-a68f-8eee2ef0c30eEinar Thorsrud<p>Hi,</p> <p>You can implement what you want by detecting the button push and starting a timer (typically using the app_timer library) to measure the time until the button is released. This is implemented in the <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.0.0/lib_bsp.html?cp=4_0_0_3_6">BSP</a>&nbsp;that is used in the SDK examples, but it may be unnecessarily complex. Alternatively you could implement it yourself, for example by combining the <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.0.0/lib_button.html?cp=4_0_0_3_7">Button handling library</a>&nbsp;to do debouncing and the app_timer do measure the duration of the button press.</p><div style="clear:both;"></div>