I designed a custom nrf52 board using the (nRF52840-CKAA-R ) as the chip. I am trying to program the board using P20 of the nRF52840 development kit and using Kielu5 and Segger to download the software. I made reference to this link to connect the pins of P20.
When I try to download the program into the custom board, Kiel displays the following error (figure 1) and Segger displays ths following error (figure 2).
figure 1 =
, figure 2 = 
I discovered that the chips must have ID code and must be set in the software settings. The following figures show where the I found id code in Kiel for the nrf52840 dk. figure 3 shows the id code of the nrf52840 developing kit, while figure 4 shows that Kiel is not finding the id code of the custom board nrf52840 when connected to the DK.
figure 3 = 
, figure 4 = 
I think I am missing some steps. To program a new custom board do I have to flash a softdevice hex file first, before the main program ? and how do I get to know the id code of a new chip ?
