Power Profiler kit 2 not reading measurement

[xtrmsound]

Hello all,

For a battery project I am working on, I am using the Power Profiler Kit II (PPK2) to monitor battery usage; at first, everything was working great, and I was able to optimize my code further.

However, for some unknown reason, the PPK2 stopped working. The device is being identified by the computer (both Linux and Windows), and I can enable the power output and move the different dials to change the sampling parameters. However, now I am getting 0 measurements. I checked the wiring and other PCBs, but I am not getting any data other than 0 and some spikes. I checked the wiring and even the voltage coming in and out and saw the correct values (3.3V).

I am unsure what I did wrong, but everything worked great until yesterday. My main machine is a Linux one, so I thought it might be an environment issue, so I installed it on a Windows machine, and the results are the same. The blue LED blinks, and everything seems fine, but the values are zero.

I did some reading and saw some people having an issue with the firmware, so I tried to put the PPK2 in DFU mode (TP34 to ground). The PPK2 booted in DFU mode, and I was able to reflash the firmware. Unfourthly, that didn't solve the problem. The reading is still zero.

I was wondering if there is a restore to default or any self-diagnosis that can be done to review what went wrong?

The PPK2 is connected to a CC1310 board that draws a maximum of 15mA and uses 3.3V, which is way under the board's maximum spec.

Thank you

[Sigurd Hellesvik]

Hi,

However, now I am getting 0 measurements. I checked the wiring and other PCBs, but I am not getting any data other than 0 and some spikes.

Can you upload a couple screenshot so I can see how this looks?

When you say "data other than 0", do you mean exactly 0, or some nA?

Regards,
Sigurd Hellesvik

[xtrmsound]

Hello Sigurd,

I uploaded two images that show the connection to the CC1310 board and a picture of the measurement of the "faulty" unit.

Luckily, I have a friend who has another PPKII. I just got his PPKII and connected it similarly, and I could see expected live data (3rd image).

I can provide the S/N for each PPKII if needed.

The CC1310 board has the jumper set to external power. The PPKII input pins are connected to the 3.3V input, and the output goes directly to the CC1310 chip.

Let me know if I can provide additional information.

Thanks

[Sigurd Hellesvik]

From what I can see, you have tested everything that you can, and it is the PPK2 that is broken.
I will send you a mail, and we will send you a new PPK2 to replace this one

[xtrmsound]

Thank you.

Would you want the faulty PPKII back for testing on your end?

[Sigurd Hellesvik]

Good thing you pinged me here, turns out I drafted the email but never clicked "send". It has been sent now.

I will check if we need it back or not, and will let you know when I know.