How to put nrf51822-mkit in low power consumption

RE: How to put nrf51822-mkit in low power consumption

Angel — Mon, 26 May 2014 09:24:05 GMT

Hi, I've tested without uart (Serial commented) and without Led. Power is about 0.7mA. Sw4 off.

Any other recomendation?

RE: How to put nrf51822-mkit in low power consumption

Håkon Alseth — Mon, 26 May 2014 07:02:13 GMT

Hi,

The ~1 mA current consumption indicates that the 16M clocktree is running while you're in sleep. Most likely, it's the UART which causes the high current consumption. LEDs toggling will also have an great impact.

The current mbed projects are not made with focus on power consumption, which is also reflected in the wait-functions in main.

Best regards Håkon

RE: How to put nrf51822-mkit in low power consumption

Angel — Mon, 12 May 2014 11:03:24 GMT

The switch 4 is off to isolate the nrf51822 from the atmel. At best 0.7mA power consumption.

I've put a blinking led in the while(1) { sd_app_evt_wait(); } and I see about 5-10 times a second blinking. There is something that makes going out of sd_app_evt_wait().