- From: Karen Daniels <ked_at_phy.duke.edu>
- Date: 05 Feb 2003 11:21:05 -0500
Hello-- I am running a Metrabyte Das-16, and am able to get meaningful readings from the card as long as I use the comedi_data_read() method. Once I try to use the the cmd.c program, I get the following messages, which suggest that everything is working: ----------------------------------------- command before testing: start: now 0 scan_begin: follow 0 convert: timer 1000000 scan_end: count 4 stop: count 1000 first test returned 0 (success) start: now 0 scan_begin: follow 0 convert: timer 1000000 scan_end: count 4 stop: count 1000 second test returned 0 (success) start time: 1044461839.615275 read 666 666 read 666 1332 read 666 1998 read 666 2664 read 666 3330 read 666 3996 read 666 4662 read 666 5328 read 666 5994 read 666 6660 read 666 7326 read 666 7992 read 8 8000 ----------------------------------------- However, the output data is all zeros! 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 etc... ------------------------------------------ Has anybody else encounted this problem, or can they suggest a solution? Thanks, Karen Daniels ========================================================================== Karen Daniels Postdoctoral Research Associate Dept. of Physics and Center for Nonlinear and Complex Systems Box 90305 Duke University Durham, NC 27708 Phone: (919) 660-2549 Fax: (919) 660-2525 http://www.phy.duke.edu/~ked/
Received on 2003-02-05Z16:21:05