Hi, Background: We're developing wireless application with the NRF5340-NRF7002 chipset, similar to what's on the 7002DK board. We'd like to put the system to lowest power mode when it's not being used. I found two samples related to this: nrf/samples/wifi/shutdown and zephyr/samples/boards/nrf/system_off My questions are: Which sample shall I base my project on? The wifi/shutdown sample page states that " This also demonstrates how to achieve the lowest possible power consumption in the Host SoC (nRF53 , nRF52 or nRF91 Series) when Wi-Fi is enabled but not being used." - How is this achieved? I can only see function net_if_down() is used. I assume this will only turn off the nRF7002 wifi chip, but not the host? The system_off sample uses sys_poweroff () function, will this shut down both nRF5340 and nRF7002 chips? What happens when BT and/or Wifi are being used? Many thanks in advance!

NRF7002 DK system shutdown

rainbowkenny over 1 year ago

Hi,

Background:

We're developing wireless application with the NRF5340-NRF7002 chipset, similar to what's on the 7002DK board.
We'd like to put the system to lowest power mode when it's not being used.
I found two samples related to this: nrf/samples/wifi/shutdown and zephyr/samples/boards/nrf/system_off

My questions are:

Which sample shall I base my project on?
The wifi/shutdown sample page states that "This also demonstrates how to achieve the lowest possible power consumption in the Host SoC (nRF53, nRF52 or nRF91 Series) when Wi-Fi is enabled but not being used." - How is this achieved? I can only see function net_if_down() is used. I assume this will only turn off the nRF7002 wifi chip, but not the host?
The system_off sample uses sys_poweroff() function, will this shut down both nRF5340 and nRF7002 chips? What happens when BT and/or Wifi are being used?

Many thanks in advance!