What is lowest power consumption template code for nrf52840 dongle

[Fabio]

I am a beginner trying to get a device to operate optimally under a battery. Where can I find a starter code template that would shutdown/disable everything, putting the device in its lowest power consumption profile so I can build from there? Instead of playing with disabling things, I was trying to start with everything off and enable what I need. I checked the examples in the SDK and all of them, even the power management ones, show a 6mA consumption.

[Simon]

Hei, Fabio.

Check out the links provided by Carl Richard.

6mA sound quite high, it seems like the CPU is running, without any kind of sleep states.

Could you try to opening a very simple application, like the blinky example, and put the chip to system ON mode in the while(true) loop, as described in this link, and measure the current then.

Best regards,

Simon

[Fabio]

I also would like to explain how I am measuring current in case this is wrong. I am applying a 3v source directly on the USB connectors on the board and measuring the current this way. Does the fact that I am applying 3v instead of 5v on the USB influence anything? My thought process is that I want to use two AAA battery to power the dongle through the USB connector. The dongle works fine since nrf52840 runs on 3v anyway. However, I don't know if this can screw up energy consumption somehow