NRF51 current abrupt change

[liu]

hello, I uses NRF51822 to make a beacon with RTC. When it works initially, the churrent is small about 330uA，but after a few minutes it becomes 1.1mA and stable. I donn't konow why.

[Stian Røed Hafskjold]

Are you using GPIOTE IN event for the g-sensor interrupt pin? This consumes current in idle mode. You should configure to use GPIO PORT event.

For the 1.1mA I suspect that the chip enter debug mode. Please see Kenneth's answer in this one: https://devzone.nordicsemi.com/f/nordic-q-a/16530/issue-with-nrf51-unexpectedly-entering-debug-mode

You can also post a hex file if you want. Then I can do some measurements here.

[liu]

hello,

Thanks for your help.This is my hex file with S110.6406.nrf51422_xxac_s110.hex