How to use the Power Monitor to measure the current of the nRF52832?

RE: How to use the Power Monitor to measure the current of the nRF52832?

xvhongpeng — Wed, 21 Mar 2018 08:58:21 GMT

i will have a try,thank u very much.

RE: How to use the Power Monitor to measure the current of the nRF52832?

Bastien Reynard — Tue, 20 Mar 2018 13:04:28 GMT

Power cycling means to turn off and then on again the device. Can you measure if you have the right voltage on VDD (should be 0V) and VDD_nRF (3V) with your measurement setup?

RE: How to use the Power Monitor to measure the current of the nRF52832?

xvhongpeng — Fri, 16 Mar 2018 01:46:34 GMT

My problem remains. As shown in the pic below (from nRF52 DK User Guide), it describes how to prepare the development kit board.

"the development kit power cycled to reset the debugger chip before current measurement. " How to do it? I can't quite understand this sentence. thank u.

RE: How to use the Power Monitor to measure the current of the nRF52832?

xvhongpeng — Thu, 15 Mar 2018 09:13:45 GMT

thank u. i think i got the point. it may be because that the nRF is not doing what it's supposed to do.

RE: How to use the Power Monitor to measure the current of the nRF52832?

Bastien Reynard — Wed, 14 Mar 2018 15:26:38 GMT

What power monitor are you using? Is the nRF doing what it's supposed to do?

RE: How to use the Power Monitor to measure the current of the nRF52832?

xvhongpeng — Wed, 14 Mar 2018 14:27:09 GMT

That's the question. If i remove the red jumper on P22, i cannot mearsure any currents. If i add it, the normal current waves return.

RE: How to use the Power Monitor to measure the current of the nRF52832?

Bastien Reynard — Wed, 14 Mar 2018 14:04:28 GMT

Red on VDD_nRF and black on P21-1. Like on your picture but without the red jumper.

RE: How to use the Power Monitor to measure the current of the nRF52832?

xvhongpeng — Wed, 14 Mar 2018 13:38:07 GMT

Thank u for your valuable answer. The Power Monitor has red and black terminals, and we have to supply the board and measure the current consumption via the two terminals. So where should i add the red and black terminals?

RE: How to use the Power Monitor to measure the current of the nRF52832?

Bastien Reynard — Wed, 14 Mar 2018 09:39:12 GMT

Hello,

First program the nRF with the USB connected and with a jumper on P22.

Then, disconnect USB, and supply the board on P21 with SB9 cut.

Remove the jumper on P22, and measure current consumption on P22.

If you want to be sure of what you are doing, I suggest you to check the HW files for PCA10040.