I discovered the problem testing http://openocd.zylin.com/2604 on top of
fresh git master.
at91sam4lXX.cfg includes at91sam4XXX.cfg and it sets adapter_khz 500
Changed version of at91sam4lXX.cfg adjusts to adapter_khz 50 for low
initial clock of "L" version. Works on ftdi, without an effect on vsllink.
Basically you can try any SWD-connected MCU and change adapter_khz
manually after init to minimum and compare speed of mdw before and after
(or better use an oscilloscope)
Tom
On 15.3.2015 14:33, Simon Qian wrote:
I will do a test by connecting telnet, and modify the adapter_khz and
do a mdw command, and will report the result tomorrow.
------------------------------------------------------------------------
open...@versaloon.com
*From:* Simon Qian <mailto:open...@versaloon.com>
*Date:* 2015-03-15 19:55
*To:* Tomas Vanek <mailto:tom_...@users.sourceforge.net>
*CC:* openocd-devel <mailto:openocd-devel@lists.sourceforge.net>
*Subject:* Re: [OpenOCD-devel] vsllink silently ignores changes in
adapter_khz after init
Do you have the script? I will do the same test.
------------------------------------------------------------------------
open...@versaloon.com
*From:* Tomas Vanek <mailto:tom_...@users.sourceforge.net>
*Date:* 2015-03-15 19:43
*To:* Simon Qian <mailto:open...@versaloon.com>
*CC:* openocd-devel <mailto:openocd-devel@lists.sourceforge.net>
*Subject:* Re: vsllink silently ignores changes in adapter_khz
after init
Yes, I tested it only on swd. swd keeps the speed set in init.
Tom
On 15.3.2015 12:32, Simon Qian wrote:
Hi,
I remember vsllink can support changing the JTAG speed.
I will do a test and reply soon.
------------------------------------------------------------------------
open...@versaloon.com
*From:* Tomas Vanek <mailto:tomas.va...@fbl.cz>
*Date:* 2015-03-15 18:35
*To:* Simon Qian <mailto:open...@versaloon.com>
*CC:* OpenOCD ML <mailto:openocd-devel@lists.sourceforge.net>
*Subject:* vsllink silently ignores changes in
adapter_khz after init
Hi Simon,
would be possible to implement changing of vsllink speed
on the fly?
Some MCUs running at low clock freq after reset need it.
It also breaks some configs where one speed is set in
included cfg and
then changed to another.
Thanks
Tom
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