Christian Mauderer christian.mauderer at
Wed Feb 28 04:37:24 UTC 2018

Am Mittwoch, 28. Februar 2018 schrieb Chris Johns:
> On 28/02/2018 06:33, Christian Mauderer wrote:
> > thanks for the information. I'm quite sure that I have seen some web
> > pages that use the FlySwatter2 together with a BBB. But If you had some
> > bad experience, I'll not recommend the FlySwatter2 or some OpenOCD based
> > debugger for the BBB in the next time.
> Oh this is not the case, I think you may have misunderstood me. I use
> Flyswatter2 and OpenOCD all the time with Zynqs and soon BBBs.
> I said it was not working because debugging via JTAG takes some effort to set up
> and I have only just started to do this for the BBB. The issue I had was due to
> the am335x processor. If you 'reset halt' in OpenOCD you have around 6 seconds
> to get things sorted or the watchdog will trigger. I received excellent support
> on #beagle and have resolved that issue.
> I have RTEMS applications loading and running over JTAG and I am now look into
> cache related issues that is effecting breakpoints, stepping etc.
> I am starting to update our Wiki to document all this...

Yes, seems that I misunderstood it. So OpenOCD will remain on top of the recommendation list.
> > As a positive report: I have a quite stable setup with the Segger J-Link
> > EDU. 
> I do not run Linux and do not put Macs close to hardware so I cannot run their
> closed source GDB server. I will stick with a fully open solution I can control
> and fix.

Most of the time I prefere open solutions too. I had some problems with OpenOCD on another target and bought the J-Link for that one. I only re-used it for the Beagle and it run quite well. 

> > The EDU is a affordable variant with the disadvantage that it must
> > only be used for non-commericial purpose.
> Ouch, messy. If I am paid to work on open source is that a non-commmercial
> purpose or commercial purpose? What if I am paid more for coding and I debug for
> free? ;)

Same problem as allways with licensing. I would expect that GSoC is more educationall than commercial. But it's an edge case.

For my applications I dont have a problem to distinguish because we have another debugger at work. So I can separate these quite well.



> Chris
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