initializing ADC lowers (!) current consumption.

[Ron]

Trying to lower uC current consumption to minimum

Im trying to remove features from my program

I've notice that removing the adc initialization actually get the current to go up !

Im using ppi with RTC1 for sampling 

until I enable nrf_adc_int_enable(NRF_ADC_INT_END_MASK);, that is writing to the NRF_ADC->INTENSET register 

the current don't return to it's former LOWER level,

this causes loss of another 1mA 

Please help

Thanks !

[Stian Røed Hafskjold]

I'm pretty sure the current draw increases because you end up in the error handler when you start to remove code. In the error handler the CPU is just spinning giving a high current consumption. What is the current consumption you are seeing, and what current consumption are you trying to achieve?

[Ron]

It is definitely not an error since I can still communicate via nus (uart over ble)

the current is about 1mA, I expect it to go down to about ~100uA

Thanks 

Eran

[Ron]

Hi,

can it have something to do with clearing events ?  

NRF_ADC->EVENTS_END = 0;

[Stian Røed Hafskjold]

Not clearing events is definitely something that can cause higher current consumption. However, the ADC driver should take care of this.