Pinout of P3 (SWD) on PCA10004 and PCA10005

RE: Pinout of P3 (SWD) on PCA10004 and PCA10005

tesc — Wed, 20 Jul 2016 13:04:59 GMT

You program the external device the same way as you would program the on-board device. The external board is detected by the on-board programmer, which programs the external board rather than the on-board nRF chip. (The external board must be powered with the same voltage levels as the DK, in order to be detected.)

RE: Pinout of P3 (SWD) on PCA10004 and PCA10005

hawk — Sun, 22 Nov 2015 08:30:35 GMT

maybe we can use the port of P20, it is bigger than P19.

RE: Pinout of P3 (SWD) on PCA10004 and PCA10005

kerem — Sat, 09 May 2015 00:38:48 GMT

Thank you for the link, it recommends to use "pull-up or pull-down resistors on JTAG/SWD pins". Should I assume the adapters sold by SEGGER have built-in resistors? Because I'm making the connection manually, missing resistors could explain why my manual connection from DK to beacon kit does not work.

RE: Pinout of P3 (SWD) on PCA10004 and PCA10005

Richard Osterloh — Mon, 16 Mar 2015 13:04:53 GMT

What programming software would you use to program a device connected to one of these interfaces? How would you select one over the other? Would you need to break the connection to the onboard device?

RE: Pinout of P3 (SWD) on PCA10004 and PCA10005

Ole Morten — Tue, 07 Jan 2014 12:26:45 GMT

I'm not sure, but it might. The full pinout of this connector is given here: http://support.code-red-tech.com/CodeRedWiki/HardwareDebugConnections

As you can see, almost all the other pins do have functions, so it might very well be that the Segger could get confused from it. If you have limited board space for an additional connector, you could try however, and if it fails, you can possibly make an external adapter that "converts" the pins as needed.

RE: Pinout of P3 (SWD) on PCA10004 and PCA10005

Eliot Stock — Fri, 03 Jan 2014 18:06:55 GMT

Thanks, very helpful. If I was to use pins 6, 8 and 10 as GPIO pins for debugging using LEDs on my board, would that confuse the Segger when flashing/debugging, do you think?

RE: Pinout of P3 (SWD) on PCA10004 and PCA10005

Ole Morten — Fri, 03 Jan 2014 11:34:19 GMT

You can refer to the hardware files for the nRF51822 DK development kit, available here, that shows the pinout for this connector.

I've also attached a screenshot of this connector on the nRF51822 DK:

Debug connectors on the nRF51 DK are shown on the screenshot below, also available in the PCA10028 Schematic And PCB document: