- From: Daniel Koch <danielkoch_at_gmx.net>
- Date: Tue, 12 Nov 2002 22:46:59 +0100
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi, I've got a problem with the cmd program running on my PC104-DAS16/JR16. I can`t increase the freq and the number of scans as much as I want to, e.g. a 1 million scans at 100KHZ). Cmd stops with an i/o error and a buffer overlow is reported when I do dmesg. Frank already told me that the buffer could fill up because I don`t mark any data as read, so I read about the comedi_mark_buffer_read command in the comedilib reference. I also should set the buffersize with comedi_set_buffer_size. Unfortunately my programming skills are poor, so I don`t know how exactly I can modify cmd.c so that the buffer doesn`t fill up easily. Maybe someone of you already encountered the same problems and has a solution to it. I`d appreciate any help. BTW, Frank, I use the `timer mode` option already, but it didn`t solve the problem. I use comedi_config /dev/comedi0 pc104-das16/jr16 0x220,,3,10,,,,,100 - --read-buffersize 4096 I`m not sure about the 100, is it freq/1000 ? Thanks for your help in advance, Daniel - -- - ---------------------------------------------------------------------- "Schlage die Trommel und fürchte dich nicht" (Heinrich Heine) Daniel Koch (danielkoch_at_gmx.net) -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org iD8DBQE90Xbb6i7okj1aOg0RAoj/AKC6FAOOUOJTeD54ITRTUpT91LfowwCggT9u 1eJnj6clWiLFGjhBQvZicks= =aYIC -----END PGP SIGNATURE-----
Received on 2002-11-12Z21:46:59