On 11/07/2010 09:30, Michael Schwingen wrote:
On 11.07.2010 02:54, David Brownell wrote:
Not "just" -- see the schematics, you'll notice
a bunch of wiring needed to support SWD as an
option in addition to JTAG.Some SWD signals are
bidirectional, so a pure JTAG adapter is
not going to handle SWD too.
This looks like only a 74xx125 is needed to convert any existing JTAG
dongle to support SWD mode. Most of the switching can be omitted if you
need only fixed JTAG to SWD conversion - if you need standard JTAG, you
can just remove the adapter and use the existing FT2232 dongle as-is.
Just for info rowley in the uk produce a swd adapter for ftdi based
dongles. I have one here and it works very well with their software.
http://sites.fastspring.com/rowley/product/armswdadapter
http://www.microbuilder.eu/Blog/10-03-25/JTAG_to_SWD_Adapter_for_Crossworks.aspx
Cheers
Spen
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