- From: Frank Mori Hess <fmhess_at_users.sourceforge.net>
- Date: Wed, 30 Oct 2002 13:18:24 -0600
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Wednesday 30 October 2002 01:39 am, Mats Luspa wrote: > Hello! > > I'm running comedi+rtai. I've got sampling working with the command > interface. Now I want to get timestamps along with the samples. > How should I do it with the comedi library. > > /Regards Mats There isn't much support for this at present. It wouldn't be practical in general, since the computer can't really know when a sample was taken due to the use of hardware fifos and DMA to transfer data from the board to the computer. I suppose if a driver/board supports TRIG_WAKE_EOS, then the computer could record the time whenever it received a scans worth of data, although the interrupt latency would still show up in the time stamps. - -- Frank -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org iD8DBQE9wDCC5vihyNWuA4URArOfAKCr03AiBZZ2BIwrlXMhhPYCWi1Q9wCeNy2F TB92/PVlKRqK7Nj7+EfmDpE= =wQN+ -----END PGP SIGNATURE-----
Received on 2002-10-30Z19:18:24