This is the mail archive of the ecos-discuss@sources.redhat.com mailing list for the eCos project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

RE: PC nonblocking console I/O


On Thu, 2004-01-29 at 15:17, Richardson, Anthony wrote:
> On Thu, 2004-01-29 at 15:49, Thomas, Gary wrote:
> > On Thu, 2004-01-29 at 14:38, Richardson, Anthony wrote:
> > > I've been trying to get nonblocking read working on the PC console
> > > using the following code:
> > > 
> > >   cyg_uint32 blkinfo = 0;
> > >   length = sizeof(blkinfo);
> > >   stat = cyg_io_set_config(console,
> > > CYG_IO_SET_CONFIG_SERIAL_READ_BLOCKING,
> > >                            &blkinfo, &length);
> > > 
> > > where console is a handle corresponding to "/dev/ttydiag"
> > > I'm using the 2.0 release.
> > 
> > You can't use ttydiag for this - it has to be a regular serial device.
> > 'ttydiag' maps onto the diagnostic I/O channel which is polled only.
> 
> Is there another way to get nonblocked keyboard input then?

Use a different serial device other than ttydiag.  Configure to include
the interrupt driven driver for /dev/ser0 and use that.  That driver 
does handle non-blocking I/O

-- 
Gary Thomas <gary@mlbassoc.com>
MLB Associates


-- 
Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
and search the list archive: http://sources.redhat.com/ml/ecos-discuss


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]