Hello Laurent! :-)
As the OpenOCD+LibSWD integration job is done I am more to happy to help
You out to run this new interface using LibSWD (which uses ftdi mpsse too
at the moment). If you are interested please let me know on priv and we can
talk about the detials :-)
Best regards :-)
Tomek
--
CeDeROM, SQ7MHZ, http://www.tomek.cedro.info
On Jan 10, 2013 5:55 PM, "Laurent Gauch" <[email protected]> wrote:
> Hi,
>
> Amontec has developped a VHDL version of the mpsse at 60Mhz max swd jtag
> spi clock, instead of the actual 30Mhz.
> We are now adding new commands in our mpsse core for accelerating the
> swd job.
>
> Next and for coming with SWO we will have two solutions :
> 1. using the channel B of the ft2232h in uart for getting a direct rx
> data stream on that channel (as a simple terminal do). Amontec did some
> tests but it is not so good regarding setup, stability and speed.
> 2. using the channel A in fifo sync, placing mpsse core in the FPGA and
> adding some new specific command to enable the SWV rx data stream in
> uart or manchester style. In this case the received rx data stream
> should be packeted since we will have both replies from mpsse (JTAG /
> SWD) and reply from swo stream on the same IN endpoint.
>
> Using 2. the 1. is not possible since the actual ft2232h in fifo sync is
> disabling the Channel B.
> But the 2. with a good data packaging on RX will make the data flow fast
> as 40MBytesSec and more elegant ( as a single RX TX implementation )
>
> Any suggestions, idea on the style of packet to use and how/where to
> unpacket the data stream in the openocd?
>
> Anyone know if the other SWO interfaces as j-link u-link new icdi use a
> supplementary USB IN endpoint for getting this rx data stream or do they
> use same two endpoints as for the classic JTAG SWD command/ interface.
>
> Laurent
> http://www.amontec.com
>
>
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