led

[Nero]

is that it is possible to control the led  without using the loop 'while'

[nRF5xFanboy]

Hi Nero,

a bit late ;-)

In many embedded firmware application this loop 'While' is mandatory because of the absence of a operating system (like FreeRTOS or  Zephyr).

Therefore to answer your question a bit more information is needed.
What (sample) application program contains the loop "while"?

Kind regards,
      nRF5xFanBoy