nrf52840 custom board production programming

Question

Hi team, 
 i am having a custom board i want to program soft device and application using external j link. i came across nordic website in this page http://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.gs%2Fdita%2Fgs%2Fprod_test_prog.html&cp=1_6 and in that i found a link for segger j link https://www.segger.com/products/production/flasher/ 
 in this which flasher is best. give me suggestions which one is user friendly, cheap and best. using sdk 14.1 
 regards

ketil · Accepted Answer

Hi, 
 This adapter works with the J-Link programmers. 
 Since the pitch and pin-out of the pins on the DK is different it will not work if you try to use it for programming one DK with another. See this schematic for the pin-out on the DK. Pins 3, 5 and 9 are connected to GND and pin 7 is not connected. 
 If you want to use the nRF52840 DK to program the nRF52832 DK (or your custom board) you will have to make an adapter between the 10-pin connector (black end, without the pogo pins) and the DK. I have not seen this kind of adapter sold anywhere. 
 Ketil

ketil · Answer

Hi, 
 Are you going to program a lot of boards or just the one? 
 The most popular approach is to use a SEGGER J-Link programmer. Please see these DevZone posts for more information: 
 
 J-Link options 
 J-Link nRF52 
 
 You may also find some low cost alternatives in this blog post . 
 Ketil

nrf52840 custom board production programming

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