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 >> >> _______________________________________________ >> >> devel mailing list >> >> devel@riot-os.org >> >> http://lists.riot-os.org/mailman/listinfo/devel >> > >> > _______________________________________________ >> > devel mailing list >> > devel@riot-os.org >> > http://lists.riot-os.org/mailman/listinfo/devel >> > >> >> _______________________________________________ >> devel mailing list >> devel@riot-os.org >> http://lists.riot-os.org/mailman/listinfo/devel >> >> >> >> -- >> 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 >> >> >> >> _______________________________________________ >> devel mailing list >> >> devel@riot-os.org >> http://lists.riot-os.org/mailman/listinfo/devel > > _______________________________________________ > devel mailing list > devel@riot-os.org > http://lists.riot-os.org/mailman/listinfo/devel _______________________________________________ devel mailing list devel@riot-os.org http://lists.riot-os.org/mailman/listinfo/devel
