7 Commits

Author	SHA1	Message	Date
Werner Almesberger	07026753de	ubb-la/README: brief description of ubb-la	2013-01-24 20:04:40 -03:00
Werner Almesberger	4ce6866767	ubb-la/ubb-la.c (do_buf): skip over the first 122 samples ... They are from the setup process and therefore invalid (DAT0) and/or out of sync (DAT0-3) with the rest of the samples.	2013-01-24 20:00:59 -03:00
Werner Almesberger	62284fb78e	ubb-la/ubb-la.c: add command-line options, keyboard abort	2013-01-24 18:26:34 -03:00
Werner Almesberger	bac21bf8cb	ubb-la/Makefile (CFLAGS): even -O1 isn't safe; use -O0 instead ... While -O1 gets rid of the unexpected read in the simple code of a synthetic test, it's still there in the more complex environment we have in ubb-la.c Turning off optimization completely seems to do the trick.	2013-01-24 17:35:52 -03:00
Werner Almesberger	e1eea4fa86	ubb-la/Makefile (CFLAGS): -O9 is currently unsafe; use -O1 ... Higher optimizations can cause the generation of code that unexpectedly does the equivalent of PDFUNS = PDFUNS; http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56098	2013-01-24 15:31:59 -03:00
Werner Almesberger	2c5b3625a7	ubb-la/: data capture via UBB and MSC+DMA (WIP)	2013-01-23 11:54:23 -03:00
Werner Almesberger	d4c1f5666c	ubb-la/hw/: proof-of-concept passive LA adapter board ... Note that the pull-ups on DAT1 through DAT3 and the pull-whichever-way on DAT0 are likely to get in the way of any real-life use. But it's good enough for exploring the system's characteristics and limitations.	2013-01-23 11:52:11 -03:00