termios question was Re: interrupt question

[Stan]

The initialization is correct ( baud rate value etc..).
At 19200 and transmit delay of 1 mS every char ( !! ), the buffer is
correct.
Buf at 19200 without delay, the receiver interrupt seem to block other tasks
:

in brief,

At 9600 , all right.

At 19200 and transmit delay, all right ;)

At 19200 without delay : other task seem block while incoming characters.

I think of problem interrupt...because if the threshold FIFO is increased,
the problem disappear.
I talking about FIFO in UART : the default setting cause the receiver to
attempt to interrupt it has one or more bytes in it.
In this case, I have  a problem at 19200.
If the threshold is increased, no problem (or to put back :(  )


It 's an interrupt question ;)

Stan





----- Original Message -----
From: "Joel Sherrill" <joel.sherrill at OARcorp.com>
To: "Stan" <zylog at club-internet.fr>
Sent: Friday, March 15, 2002 3:09 PM
Subject: Re: termios question was Re: interrupt question


>
>
> Stan wrote:
> >
> > > Changing the subject so it is more accurate. :)
> > >
> > > Stan.. is CTS/RTS working at 9600?  If I am reading
> > > this correctly, the driver breaks at 19200 on your BSP.
> > > Is this right?
> > >
> > > --
> > > Joel Sherrill, Ph.D.             Director of Research & Development
> >
> > Yes, the driver breaks at 19200 on my BSP.
>
> Is there any chance that your baud rate divisor math is generating
> a bogus value?  Or that it is so close to zero that the math isn't
> working out?
>
> > Stan.
>
> --
> Joel Sherrill, Ph.D.             Director of Research & Development
> joel at OARcorp.com                 On-Line Applications Research
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>