promicro blinky

RE: promicro blinky

sasith_ind — Fri, 19 Sep 2025 02:43:01 GMT

Okay I'll try, thank you

RE: promicro blinky

BvdPdebilt — Thu, 18 Sep 2025 10:16:32 GMT

Hi, I took the blinky example from Zephyr, selected board promicro_nrf52840_nrf52840_uf2, created an overlay file with the led definition. I use nRF Connect SDK v3.0.1 and toolchain v3.0.2. In the buildconfiguration, I selected No sysbuild. Then pristine build.

Now a file 'build/zephyr/zephyr.uf2' is created. Get the Promicro in programming mode (activate 'reset' twice or use a new board). In Windows, you should see a drive called NICENANO. Drag and drop the zephyr.uf2 to that drive and the red led should blink (at least, at my board…)
Hope this helps.

RE: promicro blinky

sasith_ind — Sun, 07 Sep 2025 20:02:41 GMT

Hi I have the same problem but unfortunately changing to No sysbuild doesn't fix it for me it seems. Do you have any suggestions?

RE: promicro blinky

BvdPdebilt — Mon, 26 May 2025 14:14:18 GMT

Found the error.
I had a build configuration with System build (sysbuild) set to Build system default. When changing to No sysbuild, it works!