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
