AnsweredAssumed Answered

System stand-by when long pressing ONOFF button

Question asked by Keshava Kumar B on Apr 19, 2018
Latest reply on Apr 19, 2018 by Yuri Muhin

Hi All,



  • Platform: i.MX6UL EVK
  • BSP: Linux 4.1.15
  • Flashed Default i.MX6UL EVK Binaries to micro SD.


Background: On Power up the EVK boots successfully and we get Linux console. When I press the PWR button for more than 5 seconds, the system goes to power off state.The PWR button is connected to ONOFF pad of i.MX6UL processor. When I press again the PWR button the system boots and able to get the Linux console again.

One more Experiment: Using following command, able to put the system in stand-by mode successfully.

  • echo standby > /sys/power/state

And able to wake successfully using PWR Button                                                                        



Requirement: On pressing PWR button for more than 5 seconds the system should go for standby mode. And

when PWR button is pressed again it should wake up

We would like to implement a feature, where system goes to Stand-by mode when this button is pressed.



How can we achieve this?

Is there any option to read this ONOFF PAD.?
On pressing PWR button for 5 seconds, How can we change the functionality of the system to go to stand-by mode instead of system shutdown?


Any input about this would be a great help

Thanks in advance.
With Regards,
Keshava Kumar B