Liviu Ionescu wrote:
> >>> Any comments?
> >> 
> >> Buy a known good dongle.
> 
> sorry, but this does not help much.

It depends on what your goal is. If your goal is to make OpenOCD
support the newest J-Link firmware, a proprietary product, then of
course you should not buy another dongle.

If your goal is to use OpenOCD to do some kind of debugging, as you
indicated, then I think it is a very easy choice to spend some money
on hardware which is well-supported and where the actual interface
developers do not only provide hardware and software documentation on
request but in fact they also participate quite actively in the
OpenOCD community.

For me it is an absolute no-brainer to buy the hardware which is best
supported within the project, if the goal is to debug a target rather
than to debug a driver in OpenOCD built by reverse-engineering a
proprietary product.


> > Segger J-Link is one of the best supported JTAG tool for ARM MCU/MPU
> 
> fully agree.

That may be true outside OpenOCD but it is certainly not true in
OpenOCD. I see no participation whatsoever from Segger in the OpenOCD
community, while both Tin Can Tools (who make the FlySwatter 2) and
Simon Qian (who makes the Versaloon) are quite active and consistent
contributors. Anything outside OpenOCD is irrelevant if you want to
use OpenOCD for debugging right now.


> I already have several probes and still prefer the J-Link.
> anyone else interested in making it work with OpenOCD?
> 
> other suggestions?

What suggestion do you seriously expect to get? If you do not want to
use a well-supported interface and prefer to work on the OpenOCD
driver for J-Link in order to make it support the proprietary
interface then you have decided what you want to do and there are no
suggestions to give..

Go for it! The patches will of course be very welcome, but from your
mail it seemed like you were more interested in debugging your target
projects than working on the J-Link driver, which I think is very
reasonable. :)


//Peter

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