Hi,
 it is enough to clear the OERR (and maybe the FERR) bit. If all other
fails, turn reception off by clearing CREN, set the new baud rate, and
turn it on again. Be aware to empty the FIFO!

I hope this helps.
Regards,
Imre



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On Tue, 14 Aug 2001, Vasile Surducan wrote:

> On Mon, 13 Aug 2001, Olin Lathrop wrote:
>
> > >   Olin, if you remember, a while ago I've asked the same question. My
> > > purpose was an autobaud asynchronous routine. This sort of routines have
> > > usual a calibration character. Well, I've done it without this, but I need
> > > a reset. I'm still search for good  software reset. Else I can't switch
> > > from 115200 bauds to one step backward ( measured in standard baud rate ).
> > > This could be a good reason, or do you have another method ?
> >
> > You don't need to reset the processor to change the baud rate, just change
> > the SPBRG register and possibly the BRGH bit in TXSTA.
> >
>   Its's not enough. Will work only first time after a reset. I've tested.
> Next time when will come a character with other baud rate, the receiver
> it's still stick on the old baudrate and a frame error will occur. Before
> setting a new value for SPBRG and BRGH, a reset must be produced and new
> values could be written in those register.
>
> Vasile
>
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