power consumption in Idle

[ran]

Hi, 

We are starting to measure the power of our nrf52840 based design.

I'd like to establish the power number for Idle() , since system will be in Idle() most of the time. 

For that , I have used the following code, invoked from CLI : 

__disable_irq();
sd_app_evt_wait();

1. Is this code correct for keeping system in Idle() ? 

2. What Is the estimated nrf52840 SoC current consumption in this mode ?  

3. Our code is based on UART example

Thanks, 

Ran

[Simonr]

Hi Ran

The SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk function is needed if you want the chip to wake up on any kind of internal events (not just interrupts). It's used in FreeRTOS examples as in tickless idle mode we disable the RTC interrupt, but still want to wake up after the timeout.

Best regards,

Simon

[ran]

Thanks, will it save more power if using DEEPSLEEP ?