Hi Bob,

I did exactly this for the 900MHz data link project of my wireless tutorial
(which is progressing slowly but surely. The 900MHz data link project is
completed, though)

Check out:

http://www.rocket-roar.com/BWCM/toc.html

specifically the section labeled:

Chapter 4 - Design Project 3: 900MHz Automatic Error-Correcting Data Link

The source code is at:

http://www.rocket-roar.com/BWCM/900MHz/900mhz.asm

and the schematic and a photo of the completed unit:

http://www.rocket-roar.com/BWCM/900MHz/hard.html

Sean

At 11:42 PM 2/22/02 -0800, you wrote:
><late night speculation mode on>
>
>I don't know of any PIC that has two hardware UARTs but you should be
>able to implement this with a 16F628.
>
>You should be able to receive one input channel with the hardare UART
>and do a bit-banged receive for the other. I'd suggest using RB0/INT
>to do the start bit detection for the bit-banged input.
>
>Note: Be sure to keep interrupts disabled while you're bit-banging the
>one input. Its stop bit time should be sufficient for you to check the
>UART status bit and retreive the other channel's byte if it has
>arrived at the same time.
>
><late night speculation mode off>
>
>
>Regards, Bob
>
>
> >ps sorry if this the wrong place to ask or has been ask before I am new
> to this list
>
>PS - You should use the topic tag "[PIC]:" in your subject. If you
>don't, most people won't see your posts.
>
>--
>http://www.piclist.com hint: The PICList is archived three different
>ways.  See http://www.piclist.com/#archives for details.

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