Patrick Wieland wrote:
>> (I added some ultra high speed level shifters
FYI - the XVERVE -signalyzer has this "built in", as does many of the
SEGGER dongles, do check, you can screw up a target board easily enough.
http://www.signalyzer.com/
Warning: the signalyzer *LITE* version - is 3.3/5.0V only!
> You said I'd have to set jtag clock speed to zero, to enable adaptive
> clocking, ok, but my problem is how to tell OpenOCD what the current target
> speed is.
>
You don't need to tell it anything other then "0".
ARM has a nice diagram, see the OPENOCD "Users manual" - Chapter 23,
FAQ #1 - "*RTCK, also known as: Adaptive Clocking - What is it?" it
explains this in more detail.*
http://openocd.berlios.de/doc/html/FAQ.html#FAQ
It has a link to:
http://www.arm.com/support/faqdev/4170.html
In the ARM diagram, Look at the TCK synchronizer and the RTCK signal to
the TAP in the block diagram on the ARM site.
-Duane.
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