Hi Team,
We have nrf52-DK with version 2.0.0 and we are trying to do power analysis for our application using it. We found a description in nRF52_DK_User_Guide on how to prepare the board for current measurement. (Cutting PCB Track of SB9 and cut SB11 or SB12). However, this description belongs to V1.2.x.
Is there any document that describes how to prepare nrf52-DK 2.0.0 for power measurement?
This is the kit that I've:
Thanks.
Hi Kazi,
Thanks for the response. I believe, we have baseline sleep current as per expectation with avg around 2uA. With floor current around 800nA and spikes of around 5uA.
However, we have weird issue where we now we have elevated current once we wake-up from timer (1 minute) and goes back to sleep. Here is the sequence we are testing:
1. Init GPIO
2. Turn on LED in main, sleep for 1 second, turn OFF the LED
3. Start timer that wakes up every 1 minute
4. Return from the main
5. In timer Handler add work queue and return
6. In work task, Turn LED ON, sleep for 1 second, turn OFF LED, return
At step-4, after turning OFF the LED from the main and waiting for timer to start, we have current consumption of ~2uA (floor 800nA, spike 5uA, every 30mS)
After Step-6, after turning OFF the LED current consumption increases around 28uA (of course with +5uA spikes) and keep on decreasing till the next cycle kicks in.
Points to note:
- When we turn OFF LED from the main then return, we have base current so definitely it's not an LED that's causing the leak
- It happens only after wake-up and then sleep cycle
Could you suggest what could be wrong here or direction to debug this?
We are using nRD52832 custom board with nRF Connect SDK 1.8.0.
Thanks!
