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
<mailto: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
<mailto: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
<mailto: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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--
/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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