On Tue, Jan 11, 2011 at 5:02 PM, simon qian <simonqian.open...@gmail.com> wrote: > Hi, > I'm back for SWD, I have about 3-5 weeks holiday(hope my company will not > call me back at holiday). > So I can prepare for the Versaloon SWD driver in OpenOCD. > > Is the SWD transport usable now in OpenOCD?
Hello Simon! :-) Not yet usable - I just got back from holidays and ready for further work on libswd - it should be fully documented (doxygen) and available on ints svn repository (http://libswd.sf.net) this week(end). I am testing it with the UrJTAG as for now to make sure mechanisms provided by libswd are functional and can be integrated into other programs, but it can be also paralelly included into OpenOCD, David provided great background for this. What is most important right now is how to join low-level drivers with high level drivers and that would be grreat if we could solve this problem on versaloon (high level driver?) and probably later on rlink (and others). David provided his sources for SWD some time ago, so now it is time to put things all together and make it work :-P Libswd can now generate swd bit stream operations as command quants on the bidirectional queue to be fed into FT2232 (or other bitbang level driver). Some features still need to be created or fixed, but i am back from the holidays so i get to work :-) swd_cmd are quants of bus operation, that is reset, request, ack, data_read, parity that can be used to construct high level operations (such as idcode_read, data_read, etc). All swd_cmd can be put on the queue with miso or mosi direction. With this design libswd can be implemented into various applications (also standalone) and can serve precise bus operation log. As for now only the idcode_read is implemented (it simply calls series of command quants to form up such bus transfer). We need to invent tome way to use libswd with low-level and high-level drivers, or simply use libswd only to build bitstream for low level drivers (and miss the exact backlog for high level drivers?). The library is fairly simple and self-explanatory, you can find some sources and additional documentation at: http://files.tomek.cedro.info/electronics/arm/cortex/libswd/ http://stm32primer2swd.sourceforge.net/ http://libswd.sf.net Full documentation for libswd shoudl be available in a few days, the website is now working, also mechanisms provided by libswd are being verified with urjtag. Please let me know if you need additional information :-) Best regards :-) Tomek -- CeDeROM, SQ7MHZ, http://www.tomek.cedro.info _______________________________________________ Openocd-development mailing list Openocd-development@lists.berlios.de https://lists.berlios.de/mailman/listinfo/openocd-development
