Power management shutdown

RE: Power management shutdown

Simonr — Fri, 06 Aug 2021 10:39:55 GMT

Yes, you can use the sd_power_system_off() similarly as long as your application uses a SoftDevice. The NRF_PWR_MGMT_SHUTDOWN_GOTO_SYSOFF doesnt do anything more than putting the device in system OFF mode, but the power management library provides other features like the CPU usage traces, a standby timeout, a "stay in system OFF mode" etc.

Best regards,

Simon

RE: Power management shutdown

Gueston — Fri, 06 Aug 2021 07:57:40 GMT

I saw those examples. So if I understand correctly I need to prepare everything myself before sleepmode/reset? But what is the purpose of that library then, if I can call sd_power_system_off() directly and I also need to prepare before sleep?

In other words, in both situation I need to prepare for sleep, so what does the library function do more?

RE: Power management shutdown

Simonr — Wed, 04 Aug 2021 12:13:05 GMT

Please check out the Power management library page on the Infocenter for details. This library is used for handling idle mode and entering system OFF or DFU modes. You will need to prepare the device for sleep before calling I.E. the "sd_power_system_off()" function. You can see in our SDK example projects, that we usually have a function like sleep_mode_enter() or idle_state_handle() to prepare the device for sleep mode before actually going to sleep mode.

Best regards,

Simon