ULINK for nRF51822

[Julian]

I posted this on the Keil website, but got no answers! I would like to use one of my ULINK 2 pods to develop my application. However the Keil interface defines a reset connection. As we all know, the nRF51822 does not have a dedicated reset pin - it shares reset with the SWDIO. Can I use my ULINK 2 by simply ignoring the reset connection and if so - will it be compatible with either the DEV or EVAL boards with either the nordic or Keil toolchains?

[Håkon Alseth]

Hi Julian,

I have not tried to program the devices with that specific debugger, but I've tried the Ulink ME. The problem with unsupported debuggers are these:

• Flashing the softdevice
• Erasing the chip using command ERASEALL (re-flash new softdevice for instance).

Doing application development is not an issue, but there's no good solution to the above bullet points. To answer your question, I believe that the pin assessment is done by selecting NRF51x22 as flash algorithm (however, i've not tested this with that specific debugger).

Best regards Håkon

[Julian]

Thanks Harkon, I have seen the two bullet points mentioned before, but I thought (naively) that if the chip supported TWD and the debugger supported TWD then everything would be fine. I think I will try my ULINK 2 with my KEIL IDE and see how I get on.

[MH]

Hi, I want to use the Ulink 2 to program the nRF51822 device too. Did you successfully manage to program the device using Ulink? if so, please give me some suggestion on how to do that. Regards