Guidance on implementation of LOW POWER MODE In my ncs board, i am using the new ncs sdk

RE: Guidance on implementation of LOW POWER MODE In my ncs board, i am using the new ncs sdk

Menon — Thu, 25 Apr 2024 13:08:46 GMT

Hello,

The code you shared (function when timer expires) looks good to me.

Kind Regards,

Abhijith

RE: Guidance on implementation of LOW POWER MODE In my ncs board, i am using the new ncs sdk

Antony_augustine_1969 — Thu, 25 Apr 2024 12:23:50 GMT

void expiry_function(struct k_timer *timer)
{
	printk("timer expired, entering deep sleep mode\n");
	timer_expired = true;
	rc = pm_device_action_run(cons, PM_DEVICE_ACTION_SUSPEND);
	if(rc<0){
		printk("could not suspend console\n");
	}
   sys_poweroff();
	
}

i have written this as the expiry function for the code, would this work with the same functionality

RE: Guidance on implementation of LOW POWER MODE In my ncs board, i am using the new ncs sdk

Menon — Thu, 25 Apr 2024 11:36:18 GMT

Hello,

For putting the device into deep sleep mode using a timer expiry of 60 seconds, you can use the power management mechanism provided by Zephyr, as mentioned in the Bluetooth: Peripheral power profiling documentation. CPU enters the idle state when kernel has nothing to schedule. This is managed by the Power Management Subsystem in Zephyr. See this section, you can also watch this video from zephyr explaining this in bit more details. Refer to the RT1060 System Off demo documentation. In this example, the system is turned off after enabling wakeup through a button press.

Kind Regards,

Abhijith

RE: Guidance on implementation of LOW POWER MODE In my ncs board, i am using the new ncs sdk

Antony_augustine_1969 — Wed, 24 Apr 2024 11:21:07 GMT

so i have some changes regarding my requirement, i want to put the device in deep sleep mode using timer expiry of 60 seconds and the configure a button press to wake the system up.

RE: Guidance on implementation of LOW POWER MODE In my ncs board, i am using the new ncs sdk

Antony_augustine_1969 — Wed, 24 Apr 2024 05:18:26 GMT

PLEASE ALSO KEEP IN MIND I AM USING nrf52832