nRF51DK to program custom board

RE: nRF51DK to program custom board

Petter Myhre — Fri, 17 Apr 2015 10:40:21 GMT

From Section 5.10 in the nRF51-DK - User Guide:

The nRF51 DK board supports programming and debugging of external boards. To debug an external board, connect to the Debug out (P19) connector with a 10 pin cable.

When the external board is powered, the interface MCU will detect the supply voltage of the board and program/debug the target chip on external board instead of the on-board nRF51422.

You can buy the cable here.

RE: nRF51DK to program custom board

Petter Myhre — Fri, 17 Apr 2015 10:39:18 GMT

This is not an answer. Please edit your question to include the information.

RE: nRF51DK to program custom board

Alex — Thu, 16 Apr 2015 14:37:56 GMT

You need to use Debug out connector. I used on my PCB this cable http://www.tag-connect.com/TC2030-CTX Datasheet so no cost for on-board connector. When you apply Vcc on pin 1 from your board then nRF51DK will recognize external board and will use Debug out signals, not internal nRF51 chip.

RE: nRF51DK to program custom board

TheGodPartycle — Thu, 16 Apr 2015 14:09:29 GMT

i have this board. the question is, how exactly can i use this to program and debug a custom board?

the nRF51DK has Debug in and Debug out. I am assuming i have to use debug out on top left hand side as shown in the picture below.

questions :

Where can i purchase a cable that fits into the debug out socket?
how do i tell the debugger to program the external board and not the on board module?

thank you

RE: nRF51DK to program custom board

Max C. — Thu, 16 Apr 2015 10:12:37 GMT

Check this: stackoverflow.com/.../programming-nrf51822-and-integrating-it-on-a-pcb

I dont't know about nRF51DK, but if the Segger J-Link is on-board probably you can't use it to program other boards; if the J-Link is a stand-alone piece you can for sure use it to program your custom boards;

When you want to program a custom board be careful to the Target Voltage: typically the J-Link sold within development kits is a cheaper one which works only for Target Voltages of 3.3V, so you will be unable to use it to program your custom board if your supply voltage is different form 3.3V;

UPDATE1: As others stated, the nRF51-DK board support external debugging-programming through the DEBUG-OUT" connector;

Anyway as i was suspecting, please note that the integrated Segger J-LINK only supports target volotages of 3.0V as specified into the nRF51-DK user guide 1.0: "Note: The voltage supported by external debugging/programming is 3.0V" pag.20