- From: Frank Mori Hess <fmhess_at_users.sourceforge.net>
- Date: Thu, 21 Nov 2002 14:43:55 -0600
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Thursday 21 November 2002 08:00 am, Daniel Koch wrote: > > BTW, Frank, I already tried sending the data directly to a file but then I > got several buffer underuns before I get a final buffer overflow... This > happens when I set the buffer to the maximum size. If set the buffer too > small then I get a simple buffer overflow. > What do you mean buffer underrun? The only thing reading data is your user space program. By the way, just to make sure things are clear for you: if you are having hardware/dma problems with the das16 driver they will appear as missing/corrupt data. Comedi will not report any errors in this case, due to the fact that das16 boards don't provide any status bits for determining the state of their fifos so there is no way for the driver to know if it has overrun. You might have better luck using the mmap.c from cvs, it will work correctly (at least until you get an integer overflow after reading 2 gigabytes at which point it will exit ). - -- Frank -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org iD8DBQE93UWN5vihyNWuA4URAg9YAKDNz+V2V0KrmixMlnfHk6Wj7fS03wCeLgdy 4uwwuRMLroPKG01r185C8x4= =sE0Q -----END PGP SIGNATURE-----
Received on 2002-11-21Z20:43:55