PPK2 modifiers report abnormal gain for GI3

RE: PPK2 modifiers report abnormal gain for GI3

Jared — Wed, 04 Oct 2023 14:38:57 GMT

Hi there,

I see, I can't say that I can pinpoint exactly which of these commands that might have caused the overwriting of flash, but I pretty sure that it shouldn't be possible to do it if the PPK2 is used with the recommended SW(nRF Connect Power Profiler)

We don't have a official fix to restore the calibration data at the moment unfortunately.

regards

Jared

RE: PPK2 modifiers report abnormal gain for GI3

matharman — Mon, 02 Oct 2023 14:33:51 GMT

Hi Jared,

No, not exactly. Because we need an automated setup we're interfacing directly with the serial ports of the PPKs. We adapted the protocol from the Power Profiler app source code. We only send the following sequence of commands so I am not sure how the values could have been modified.

- SetPowerMode (0x11) with argument 2 for source mode

- RegulatorSet (0x0d) with VDD argument split bytewise like in the Power Profiler app. We are always using the same voltage, 3000 mV.

- GetMetadata (0x19)

- Here we read lines from serial until one contains END, then parse the values

- AverageStart (0x06)

- DeviceRunningSet (0x0c) with argument 1 to enable power

- Here we start collecting serial data to do the ADC conversions & etc

- DeviceRunningSet (0x0c) with argument 0 to disable power

- AverageStop (0x07)

RE: PPK2 modifiers report abnormal gain for GI3

Jared — Wed, 27 Sep 2023 14:24:31 GMT

Hi there,

Just to be clear, you have only used the PPK2 with nRF Connect Power Profiler app right? I'm just trying to figure out how the calibration values were re-written, it's clear that G13 is way off,

regards

Jared

RE: PPK2 modifiers report abnormal gain for GI3

matharman — Mon, 25 Sep 2023 22:01:20 GMT

Hi Jared,

Our manufacturing partners got back to us with the label info from the affected units. Thanks for your patience. For reference, the units that are not impacted are also all build 1.0.1 with various "YEAR"."NUMBER" codes.

PCA63100
1.0.1
2022.31
F7700B12

PCA63100
1.0.1
2022.14
EC83A502

PCA63100
1.0.1
2021.15
C22101D3

RE: PPK2 modifiers report abnormal gain for GI3

Jared — Mon, 25 Sep 2023 13:15:59 GMT

Yes, that is exactly what I'm after.

[quote user="matharman"]

Is there a software method I can use to retrieve this information? If so I'll whip up a script to run on the remote test host.

[/quote]

Unfortuanly no.

regards

Jared

RE: PPK2 modifiers report abnormal gain for GI3

matharman — Mon, 25 Sep 2023 13:04:35 GMT

Hi Jared,

I am guessing this information can be found on the small square label on the PCB? If so, I have requested our manufacturing partners to take pictures of this label for me -- I do not have physical access to the problem units unfortunately.

Is there a software method I can use to retrieve this information? If so I'll whip up a script to run on the remote test host.

When I have the info I will update this post.

RE: PPK2 modifiers report abnormal gain for GI3

Jared — Fri, 22 Sep 2023 10:06:09 GMT

Hi there,

Could you provide the revision and build code for your PPK2?

regards
Jared