PPK: Unable to connect to the ppk, check debugger connection and make sure pynrfjprog is up to date

RE: PPK: Unable to connect to the ppk, check debugger connection and make sure pynrfjprog is up to date

rastik — Mon, 03 Apr 2017 21:56:33 GMT

I was fighting with PPK as well and the problem was that I was using x64 version of Python. Switching to x86 version solved the problem.

RE: PPK: Unable to connect to the ppk, check debugger connection and make sure pynrfjprog is up to date

Ole Bauck — Fri, 09 Dec 2016 15:28:26 GMT

Great work! I will mark your answer as correct and close this case. I will also see if there are any improvements we can do to the guide.

RE: PPK: Unable to connect to the ppk, check debugger connection and make sure pynrfjprog is up to date

CurtisHx — Fri, 09 Dec 2016 14:34:06 GMT

Alright. I got it working. Some things were borked, and I was apparently missing a critical component. NumPy apparently requires the VC++ 9.0 Runtime, which I did not have installed. Installing VC++ 9.0 fixed the problems I was having with NumPy. Apparently, I had python 2.7.10 installed, but the installation was screwed up. I deleted the Python27 folder from C:\ and removed all references to Python from the path variable. That let me completely remove 2.7.10 (I was having problems uninstalling it). From there I could install Python 2.7.12, run the python_packages.bat file, and now the PPK is working.

RE: PPK: Unable to connect to the ppk, check debugger connection and make sure pynrfjprog is up to date

Ole Bauck — Fri, 09 Dec 2016 13:02:59 GMT

I tested and it should work with these packages. You have followed the instructions here: infocenter.nordicsemi.com/.../PPK_user_guide_Installation.html ?

RE: PPK: Unable to connect to the ppk, check debugger connection and make sure pynrfjprog is up to date

CurtisHx — Fri, 09 Dec 2016 12:36:07 GMT

Those are the packages that puthon_packages.bat installed. I'll try getting the packages specified.

RE: PPK: Unable to connect to the ppk, check debugger connection and make sure pynrfjprog is up to date

Ole Bauck — Fri, 09 Dec 2016 12:31:45 GMT

Then there is nothing wrong with the connection to the PPK device. Probably there is something wrong with the software on your computer. Can you try to use the versions specified, or try it on another computer?

Using nRF52 DK instead should not change anything.

RE: PPK: Unable to connect to the ppk, check debugger connection and make sure pynrfjprog is up to date

CurtisHx — Fri, 09 Dec 2016 12:16:24 GMT

All the switches are in the correct location. The PPK is mounted correctly on the DK. SB9 is cut on the DK. nrfjprog -r -f nrf52 results in "Applying system reset. Run." I also grabbed an nRF52 DK to try with the same results.

RE: PPK: Unable to connect to the ppk, check debugger connection and make sure pynrfjprog is up to date

Ole Bauck — Fri, 09 Dec 2016 10:21:16 GMT

All switches are in 'DK' position as described here?

You are sure the PPK is correctly mounted on the DK (all pins align)?

You can check if you have connection to the PPK chip through the debugger by for example running the command nrfjprog -r -f nrf52. Make sure that SB9 is cut on the DK so that the chip you 'see' is not the one on the DK.

If the wrong firmware is running on the PPK chip (if you accidentally programmed it instead of the DK), you can reprogram the firmware by running the flash_ppk.py script inside the software folder.