PPK v1.1.0 with nRF Connect v2.6.0 issue

[Atlas]

Hi

I installed nRFConnect v2.6 and command line v9.8.1 and want to use PPK to measure current.

When first connect, it will update FW into PPK and works well to measure.

But when I adjust "Voltage regulator" after swtich SW2 (External) and SW4 (Reg) then I got below item issues.

1. I adjusted 2V on voltage regulator, the output voltage is ~2V on P16 (External DUT)

2. I adjusted < 2V on voltage regulator, the output voltage is 2.1~2.2V on P16 (External DUT). Why?

3. When I adjust the scroll bar on voltage regulator many times, it will get error message on nRFConnect and PPK cannot connect with nRF Connect v2.6.0 any more.

    I tried to erase PPK FW and reprogrammed but PPK still cannot connect to nRF Connect v2.6.0

   But PPK can connect with nRF Connect v2.4.0. Why?

 Please refer attach picture and help to check item 2 and 3 issues.

Thanks.

BR

Atlas

[Hung Bui]

Hi Atlas,

Could you try to erase the chip (on the PPK) using nrfjprog  ? Then open the board again with nRF Connect v2.6? 

I have seen the same issue here when the Voltage Regulator slide failed (stuck at 2.2V) especially when there was no load on the External DUT and I need to restart the PPK board. But most of the time it worked fine. I also found if I dragged the slider it worked better than click to select the voltage. 

[mraposo1]

I also have the same issue after updating to V.2.6.1.
Updated the firmware but still gives me the same issue.
Any clues?

[Hung Bui]

You meant the issue of setting voltage ? Or the issue that nRFConnect can't open the board ? Please try to erase firmware and let nRFConnect flash it.