[ECOS] PC nonblocking console I/O

[Richardson, Anthony]

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 keep getting error 22 "Invalid argument".  I am able to to turn off
character echoing (I'm trying to get a raw console) so I'm pretty sure
that
the console handle is okay.  Is this not working because the console
doesn't
correspond to a real serial device or am I doing something wrong?

I did set the CYGOPT_IO_SERIAL_SUPPORT_NONBLOCKING option in the
configuration.  I've tried various options in the configuration tool
with
regard to enabling "TTY mode serial device drivers" and "TTY mode
channel #2"
but without success.  If anyone could provide pointers they would be
much appreciated.

I'm using the 2.0 release.

Thanks,
Tony Richardson

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