Hi,
I tried the patch Thomas mentioned, it works great! Much faster.
I only wonder how you get this:
wrote 32768 bytes from file hello-world.hex in 5.071708s (6.310 KiB/s)
│
verified 16600 bytes in 1.374114s (11.797 KiB/s)
I mean, how do you print those values?
Cheers,
2015-01-27 14:54 GMT+01:00 Thomas Eichinger <thomas.eichin...@fu-berlin.de>:
> HI again,
>
> with this patch [1] time needed to flash the samr21 gets divided
> by factor 3. (numbers below) For someone doing it very often this
> could be very interesting. It is still worked on but I tested it
> without error for now.
> Please provide feedback if you use this, as openocd guys are desperately
> looking for EDBG testers.
>
> Best, Thomas
>
> with patch:
> wrote 32768 bytes from file hello-world.hex in 5.071708s (6.310 KiB/s)
> │
> verified 16600 bytes in 1.374114s (11.797 KiB/s)
>
> without patch
> wrote 32768 bytes from file hello-world.hex in 16.532793s (1.936 KiB/s)
> verified 16600 bytes in 1.432996s (11.313 KiB/s)
>
> [1] http://openocd.zylin.com/#/c/2356/
>
> > On 27 Jan 2015, at 13:48, Thomas Eichinger <
> thomas.eichin...@fu-berlin.de> wrote:
> >
> > Hi again,
> >
> > after some research I found this post [1] on the openocd mailing list
> > explaining why flashing the samr21-xpro is unbearably slow.
> >
> > tl;dr
> > The openocd cmsis-dap driver operates in synchronous operation
> > and is not ported to a new asynchronous API yet.
> > Fingers crossed they port it soon.
> >
> > Best, Thomas
> >
> > [1] http://sourceforge.net/p/openocd/mailman/message/32496519/
> >
> >> On 14 Jan 2015, at 15:46, Lucas Jenß <li...@x3ro.de> wrote:
> >>
> >> Hi again,
> >>
> >> so it seems that the slowness was caused by virtualization after all.
> My previous VM was an Ubuntu 13.10 running inside an older version of
> VMware Fusion, which resulted in the ~0.5KiB/s speed. After installing an
> Ubuntu 14.10 that went up to ~1.5KiB/s and running OpenOCD directly on the
> host gets me close to 2KiB/s when flashing.
> >>
> >> On OS X 10.9:
> >>
> >> wrote 32768 bytes from file hello-world.hex in 16.164614s (1.980 KiB/s)
> >> verified 16892 bytes in 1.463347s (11.273 KiB/s)
> >>
> >> On Ubuntu 14.10:
> >>
> >> wrote 32768 bytes from file
> /home/lucas/RIOT/examples/hello-world/bin/samr21-xpro/hello-world.hex in
> 22.042933s (1.452 KiB/s)
> >> verified 16892 bytes in 1.505869s (10.955 KiB/s)
> >>
> >> Cheers,
> >> Lucas
> >>
> >> On 13 Jan 2015, at 11:18, Martin <martin.landsm...@haw-hamburg.de>
> wrote:
> >>
> >>> Hi,
> >>>
> >>> my flashing speed is roughly equal to Thomas' for the Samr21-xpro:
> >>>
> >>> ```
> >>> wrote 65536 bytes from file RIOT/tests/pnet/bin/samr21-xpro/pnet.hex
> in 32.083557s (1.995 KiB/s)
> >>> verified 49688 bytes in 4.114729s (11.793 KiB/s)
> >>> ```
> >>>
> >>> My openocd version:
> >>> `Open On-Chip Debugger 0.9.0-dev-00186-g30203b3 (2014-11-12-11:49)`
> >>>
> >>> Best regards,
> >>> Martin
> >>> On 12.01.2015 21:07, Baptiste Clenet wrote:
> >>>> Flashing is slow for us too, how do you get the speed?
> >>>>
> >>>> 2015-01-12 11:13 GMT+01:00 Lucas Jenß <li...@x3ro.de>:
> >>>> Hi Thomas,
> >>>>
> >>>> verification was much faster as 0.4KiB/s, I think around 10 or so for
> me.
> >>>> I checked out OpenOCD on the 9th. I’m also running Linux inside VMware
> >>>> though, so maybe it’s just caused by the virtualization. I’ll see how
> fast
> >>>> it is on the host.
> >>>>
> >>>> Cheers,
> >>>> Lucas
> >>>>
> >>>> A couple of days ago.
> >>>>
> >>>> On 12 Jan 2015, at 11:00, Thomas Eichinger <
> thomas.eichin...@fu-berlin.de> wrote:
> >>>>
> >>>>> Hi Lucas,
> >>>>>
> >>>>> I was playing with the openocd configuration a bit, mainly
> >>>>> `adapter_speed`, back when support for this was added without
> >>>>> any significant outcome.
> >>>>> Problem is, the EDBG chip, on the bottom of the board, handling
> >>>>> communication with the MCU is specified to run on 1MHz and the
> >>>>> openocd docs mention, for CMSIS-DAP, it is not advised to let
> >>>>> signal frequency exceed half of the operating frequency.
> >>>>> (I’d guess Nyquist-Shannon applies)
> >>>>>
> >>>>> That said, 0.481KiB/s still seems slow for this. I’m at least
> >>>>> reaching 1.787KiB/s for flashing and 11.190KiB/s for verification.
> >>>>> When did you check out the OpenOCD code?
> >>>>>
> >>>>> Best, Thomas
> >>>>>
> >>>>>> On 10 Jan 2015, at 14:25, Lucas Jenß <li...@x3ro.de> wrote:
> >>>>>>
> >>>>>> Hey everyone,
> >>>>>>
> >>>>>> I’ve been playing around with the Samr21 xpro and flashing
> >>>>>> the device is _really_ slow, i.e. 0.481 KiB/s. Is this expected
> >>>>>> or is there a way to improve it? I’m using the current OpenOCD
> >>>>>> Git HEAD because the 0.8.0 release does not seem to contain the
> >>>>>> configs for the board yet. I tried to flash the hello-world
> >>>>>> example.
> >>>>>>
> >>>>>> Cheers,
> >>>>>> Lucas
> >>>>>> _______________________________________________
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> >>>>>
> >>>>> _______________________________________________
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> >>>>>
> >>>>
> >>>> _______________________________________________
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> >>>>
> >>>>
> >>>>
> >>>> --
> >>>> Clenet Baptiste
> >>>> FR: +33 6 29 73 05 39
> >>>> Élève-Ingénieur ESEO Angers, dernière année, spécialisation:
> Architecte système temps réél embarqué
> >>>> Bidiplôme Master Robotics à l'Université de Plymouth en 2013-2014
> >>>>
> >>>>
> >>>>
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> >>>>
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> >>>> http://lists.riot-os.org/mailman/listinfo/devel
> >>>
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> >>
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--
*Clenet Baptiste*
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