Blinky Example not working on Network Core - nRF5340 DK

[Yeshvanth M]

I tried to program the Blinky sample which just blinks an LED to the Network core of the nRF5340 DK but doesn't seem to work. However, when I look at the docs I do see that the LED is accessible from the network core.

An Image from the Zephyr Documentation.

The above is an image from the Nordic Documentation.

Any idea why the blinky works only in Application Core and not in Network core?

[Øivind]

Hi,

If you program the sample at nrf/samples/nrf5340/empty_app_core to the application core, it will work.

This is because the LED gpio must be assigned to the network core, and this is done in the network_gpio_allow() function in empty_app_core.

[Yeshvanth M]

Thanks a lot for the info!