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PPK2 bricked?

Sebi

I just got a PPK2.
I was able to use it perfectly with Power Profiler. Great tool!
Today I wanted to learn more about nRF Connect other applications.
(Actually I was looking for a software that could replace iOS nRF Connect to perform DFU upgrades from my PC).

So I launched the Bluetooth Low Energy software, the first in the software list.
I wanted to start a scan but the icon was grayed (at first I thought the scan would rely on my PC bluetooth adapter).
I noticed I could select the PPK2 in the device list so I selected it (it is indeed made with a nRF53840).
The Bluetooth Low Energy software asked me if I wanted to flash my PPK2.
The flash process started.

After a few seconds, I got an error message in the log and the PPK2 LED stopped flashing.
I tried to launch Power Profiler again but the PPK2 had disappeared from the device list (there was no device shown anymore).

I rebooted. I retried.
Under Windows Device Manager the only difference when plugging the PPK2 is that "USB Root Hub (USB3.0)" appears in the list.
The PPK2 LED is still off.

Can you help me fix my PPK2 not working anymore?

  • 0 in reply to Sebi

    Ok, I'm glad you figured it out. Thanks for the report.

    Sebi said:

    BTW, can you tell me how to perform a remote nRF OTA DFU update from my PC (as it was actually what I was looking for when I bricked my PPK2) rather than using the nRF Connect iOS app?

    Can I flash the Bluetooth Low Energy app firmware on my PPK2 and use it to scan for remote nRFs?

     So you want to use the desktop version of the nRF Connect software to do a OTA firmware update, but you only have the PPK2 available as the connectivity hardware, not a separate nRF52 DK or dongle?

    Technically, I think you can use the PPK2 as it has the right hardware, but without having the correct firmware to control the current measurement circuitry, I'm afraid that the board can end up in a state where it consumes a lot of current or similar. It might get bricked.

    Edit:

    Actually, after looking at the board I see that it is missing the antenna matching network, meaning that the antenna is disconnected. So you will most likely not be able to maintain a connection to other devices.

  • 0 in reply to Stian Røed Hafskjold

    Ohh I get it. I just bought a nRF52840 dongle. Thank you.

  • 0 in reply to Sebi

    Dear Stian, my problems with the PPK2 are not over...

    I didn't do anything more in the meantime I thought it was fixed.
    But this morning when I wanted to do some measurements I plugged my PPK2 in my computer but it is not recognized anymore.

    I tried under Windows and Mac OS X, in every one of the 4 USB C ports, using 2 different USB C to USB 2 adapters, using 2 different USB cables...

    The LED is flashing green in a slow dimming pattern when I plug the PPK2 (meaning the power app firmware is running correctly?) or turns on red if I set the PPK2 in DFU mode.

    My computer sees the the USB C to USB 2 adapter when I plug it in, but no PPK2 afterwards when  I plug it in using the adapter. The PPK2 LED starts flashing though. If I connect a different USB device (e.g. a bluetooth adapter) instead, this other device is been discovered though.

    Thus I believe my PPK2 has a hardware failure that makes it not reachable now and then.

    Can you help?

  • 0

    Dear Stian, my problems with the PPK2 are not over...

    I didn't do anything more in the meantime I thought it was fixed.
    But this morning when I wanted to do some measurements I plugged my PPK2 in my computer but it is not recognized anymore.

    I tried under Windows and Mac OS X, in every one of the 4 USB C ports, using 2 different USB C to USB 2 adapters, using 2 different USB cables...

    The LED is flashing green in a slow dimming pattern when I plug the PPK2 (meaning the power app firmware is running correctly?) or turns on red if I set the PPK2 in DFU mode.

    My computer sees the the USB C to USB 2 adapter when I plug it in, but no PPK2 afterwards when  I plug it in using the adapter. The PPK2 LED starts flashing though. If I connect a different USB device (e.g. a bluetooth adapter) instead, this other device is been discovered though.

    Thus I believe my PPK2 has a hardware failure that makes it not reachable now and then.

    Can you help?

  • 0 in reply to Sebi

    Hello. Did you use the correct USB port on the PPK2? There are two different. One of them is only for power.

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