nRF Connect SDK (1.8.0) Idle thread mode

[embeddedER]

Hello,

We are using nRF Connect SDK 1.8.0 with nRF52832. As per the nRF Connect Documentation, when there is no active task, idle thread is called. Could you let us know what is the idle thread sleep mode? (System OFF / system OFF + RAM Retention / System ON, no RAM retention)

What should be the power consumption when there are no active tasks? Should it be (0.3uA / 0.7 uA / 1.9 uA ?) ? Considering we have disabled all the peripherals and UART/LOG as well.

TIA!

[Simonr]

Hi

The IDLE thread should put the device in CPU idle (system ON) with no RAM retention by default. So it should draw 1.2-1.9 µA depending on what wake up source is set (as long as no other peripherals are left running). You can also put it to system off with other sleep calls like what the nRF5x System OFF demo in Zephyr does.

Best regards,

Simon