- From: David Schleef <ds_at_schleef.org>
- Date: Thu, 30 Jan 2003 15:04:56 -0800
On Wed, Jan 29, 2003 at 11:15:09AM +0100, Michele wrote: > Hi, trying to tune up my Comedi-Rtai system, I still have a problem: kernel > says to me "Can't locate module char-major-98-0". Is this a problem? It means that you haven't made the modifications to /etc/modules.conf that are described in INSTALL. > Before including my DAQ board functionalities in a new Comedi style driver, > I've tried to call Comedi commands (such as comedi_data_write) to see what > passes from user to kernel space, i.e. from an executable to the driver. What > I see is nothing! > Suppose a call such as > > data = 0xaa; /* to have a significant pattern in dio channels: 010101...*/ > comedi_data_write(it,subdev,chan,range,aref,data); 0xaa is greater than maxdata for a digital channel (1), so the result is undefined. You probably want comedi_dio_bitfield(). dave...
Received on 2003-01-30Z23:04:56