Blinky firmware does'nt start without jlink connection on NRF52833 custom board

[fgaultier]

Hi,

We built the Blinky sample with NRF Connect SDK 1.3.1. It works fine on NRF52833 DK, but when flashing on external custom NRF52833 board the firmware won't start without j-link connection established.

Anyone has a clue about what's going on ?

Best regards,

[fgaultier]

Hi,

We solved the problem. It was a hardware problem: the LC circuit on DCC / DEC4 pins was not correct and was preventing the normal boot up of the NRF52833, except if connected with JLINK.