Power consumption in idle mode >= 2 mA!

[Frederic]

Hello,

i have some trubble with my current power consumption. I have already read other user question and solutions but nothing works for me. To reduce the power consumption i disable the UART and Bond manger. But as soon i activate the Advertising i see the typical TX current peaks but I have also a continuous offset of 2 mA. If i disable the Advertising the current decreases to about 530 uA, still a lot. In my application i just init the Bluetooth Stack no peripherals, Bond manager and advertising are activated. At the end sd_app_evt_wait() is executed. Another strange behavior is as soon i init the UART (everything else deactivated and no UART communication ongoing) the power consumption is about 2,5 mA.

What am I doing wrong? I am thankful for any hint.

I have a custom BLE profile the application based on HRM example. I used the RFD22301 Module from rfDigital (based on nRF51822).

[Frederic]

Hey,

thanks for help. The Problem was the GPIOTE task for flashing the LED, so that the 16 MHz clock was always on.

[tim]

How did you disable the GPIOTE task?

[Frederic]

I don't use the LED module from Nordic stack anymore. The function led_start() from nordic stack uses the GPIOTE task.

[tim]

thx, I wrote my own led functions using timers. So I never used led_start();