Blinky example not working on nrf52840-DK (nordic_pca10056) (Mynewt 1.13.0)

[Mahendra Tailor <ma...@tailoredwireless.com>]

Hello,

I'm trying to run the blinky example on the nrf52840-DK (nordic_pca10056)  using Mynewt 1.13.0 (Apache Newt 1.13.0 / c6bf556 / 2024-11-15_06:58.

I followed the [official blinky tutorial](https://mynewt.apache.org/latest/tutorials/blinky/blinky.html). The build and flash complete successfully, but the LED does not blink. I confirmed the board is good by flashing other firmware.

my main.c:

Has not been modified in any way.

My targets/nrf52_blinky/pkg.yml looks like this:

pkg.name: targets/nrf52_blinky
pkg.type: target
pkg.description:
pkg.author:
pkg.homepage:

My loading process (as per the tutorial) is:

newt build nrf52_boot
newt build nrf52_blinky
newt create-image nrf52_blinky 1.0.0
newt load nrf52_boot
newt load nrf52_blinky

I also tried the following and still no led blinking

newt build nrf52_boot
newt create-image nrf52_boot 1.0.0
newt build nrf52_blinky
newt create-image nrf52_blinky 1.0.0
newt load nrf52_boot
newt load nrf52_blinky

In both cases loading the boot resulted in the following output
Loading app image into slot 1 (/home/mahendra/dev/myproj/bin/targets/nrf52_blinky/app/apps/blinky/blinky)
and for the blinky app I saw
Loading app image into slot 1 (/home/mahendra/dev/myproj/bin/targets/nrf52_blinky/app/apps/blinky/blinky)


As this is the first step for any newbie I am stuck at the beginning of my journey to help with the LE Audio development.
Any advice?

Thanks!

Kind regards,
Mahendra Tailor