Re: [Gumstix-users] Odd behavior on ttyS2

[Fred P. <fp...@cs...>]

Thanks Dave!  That makes perfect sense - I'll give that a shot.

Fred

On 2/5/06, Dave Hylands <dhy...@gm...> wrote:
> Hi Fred,
>
> > My problem is that if I lower the baud rate (i.e. stty -F /dev/ttyS2
> > speed 9600) on both sides, the transmission is very unreliable.  If I
> > echo "blah" to /dev/ttyS2, on the PC end I'll usually see just "bl"
> > and I never see exactly what was sent.
> >
> > Has anyone else experienced this or know a way to fix it?
>
> I seem to recall that there is a problem with the serial port being
> closed before all of the data is completely sent. At 115200 the serial
> port is probably running fast enough that the data gets out before the
> close actually happens. Try this instead:
>
> (echo "blah"; sleep 1) > /dev/ttyS2
>
> This causes a one second sleep after the echo but before the close.
>
> --
> Dave Hylands
> Vancouver, BC, Canada
> http://www.DaveHylands.com/
>
>
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