OTA update of a new nRF51822

[MR2]

Hello,

I am currently designing a PCB containing the nRF51822 chip and I am concerned about how I will be able to update the program. I have 2 main questions :

1. I will have the PCB done and assembled by a PCB manufacturer. The nRF51822 chip will be ordered directly by the PCB manufacturer. There is no JLink connector on the PCB as there is no space for it (space is critical for my application). When I receive the PCB, will I be able to perform an Over the Air update directly? I need to load the S130 SoftDevice and of course my application program.
2. In the spec I see that the "SWDIO/nRESET" pin is active low. Does that mean that if I leave the pin unconnected (I don't plan to use the pins SWDIO and SWDCLK as I want to perform OTA update only) the nRF51822 will always be in debug mode or reset constantly? In the schematics and PCB layout I see that these 2 pins are connected. Can I leave them unconnected?

Thanks a lot in advance for your support! <3

[MR2]

Again, thanks a lot for your help. Do you think the following cable from Tag Connect : TC2030-CTX-NL together with the ARM ULINK2 programmer could be good?

[MR2]

Annnnd another question: the 6-pin cable pinout specifications say: 1 -MCLR, 2 Vdd, 3 Ground, 4 PGD (ICSDAT), 5 PGC (ICSPCLK) and 6 Unused or LVP; I guess that I should connect the pins 2 to 5 to : 2 Vdd, 3 Ground, 4 SWDIO from nRF51822, 5 SWDCLK from nRF51822, and leave 6 unconnected. But what about the pin 1 -MCLR? What is this for?

[RK]

By ARM ULINK2 do you mean Keil ULINK2? I've never seen one but if you use the tag-connect 'by debugger' tab they have ULINK2 and suggest TC2030-CTX-NL for use with it, so if you have one already that may work. That cable will also plug into the debug out on your nRF51DK without having to take the ULINK apart.

You're looking at the wrong pinout, well you are and you're not, that's a pinout for that connector, but those pins aren't for ARM, you want to look at the pinout for the cable you linked to which is the SWD pinout. So no, all those pin assignments you listed above are wrong, it's 1-6, VCC, SWDIO, nRESET (or unconnected), SWCLK, GND, unconnected.

And seriously it is worth mailing them BEFORE you buy the cable and make the board, they are very helpful and will confirm what you're buying before you spend $$$.

[MR2]

Yes I mean the Keil ULINK2, and no I don't have I need to order one. Thanks a lot for your precious help <3 <3