- From: John Darrington <jdarrington_at_customvis.com>
- Date: Fri, 14 May 2004 07:13:15 +0800
I wasn't sure if comedi_config was required when using kcomedilib However, I tried the following, ( which works fine in non-real time, using plain user space comedi): modprobe daqboard2000 comedi_config -i fpga /dev/comedi0 daqboard2000 When I issue the second command, I get a segmentation fault, and the kernel issues the following complaint: May 14 07:01:43 localhost kernel: comedi0: daqboard2000: ids4daqboard2000_resetLocalBus May 14 07:01:43 localhost kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000080 ... and then a register+stack dump So is the comedi_config semantics supposed to be the same for kcomedilib as for user space comedi ?? Or does it have to be ammended in some way to avoid this happening ?? Thanks for your help. John On Thu, May 13, 2004 at 05:55:50PM -0400, Frank Mori Hess wrote: > > Probably you haven't configured anything on the specified device file with > comedi_config. > > On Wednesday 12 May 2004 08:03 pm, John Darrington wrote: > > > > Anyway I tried that and although nothing disastrous happens, it always > > returns NULL. Am I using it right? Why would it return NULL ? > > > > > > - -- > Frank
Received on 2004-05-13Z22:13:15