I have a question on power switch using GPIO pin in nrf52840

[Madhu Mohan Reddy]

Hello!

I am using nRF Connect SDK  v2.6.0

I'm doing the firmware that will be applied to the custom device.

This device contains one button, to switch on/off the device on 3 sec long press 

I am reading 2 sensors data every 2msec continuosly and i am sending sensor values to the  android(client)  via BLE.

This is the first time to control the power, CPU using push button.

I am bit confusing on long press button to SYSTEM OFF exept GPIO PORT

I am new to NCS can you give some examples and suggestions on this.

Thank you in advance.

[Kazi Afroza Sultana]

Hello,

There is a blog (+) How to use the nRF9160 Feather - Blogs - Nordic Blog - Nordic DevZone (nordicsemi.com) you can look at how to use GPIO pin as switch. 

You can also look at this sample nPM1300: One button (nordicsemi.com) to know button can control the device state. This sample controls LED, load switch and power mode of nPM1300 based on button press.

One GPIO pin is configured here as an interrupt output which is used to signal the button.

[Madhu Mohan Reddy]

I want to apply the long press(3 sec) button functionality to turn off the BLE and communications(in my case SPI) 

I went through nRF9160 Feather blog its different 

I am facing difficulty to apply the long press button 

Now I am trying to implement press the same button for 3 sec  to turn/off the led.

press the same button and change the state of led

Please suggest some inputs 

Thank you in advance.