On 9/25/2012 8:13 AM, Wouter van Ooijen wrote:
>> Check the requirements of the RS232.  You might want to consider the
>> case where one unit is running at +5% and the other at -5% (if both ends
>> are the same unit).  The baud rate accuracy requirement increases with
>> baud rate, IIRC.
>
> Common misconception! Apart from minor influences like the switching
> time of the hardware the accuracy requirement for asynch does NOT depend
> on the baudrate. Hence you can not escape the accuray requirement by
> running at a lower baudrate.
>
> Wouter van Ooijen
>

True, I guess I was thinking more about interrupt latency with a slow,=20
but accurate clock and a software uart.

Joe W

--=20
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.