AVR-Chat

Jim -

There is an Atmel apnote on bit-banged serial. It should be
on the Atmel website AND on the AVRFreaks.net site. It
should save you a lot of hassle! If you look at the
waveforms for a standard serial UART, you will see what the
idle levels are at the I/O pin.

Cheers
Jim

On Tue, 27 Dec 2005 11:10:06 -0800
 James Washer <washer@trlp.com> wrote:
> I need to implement a bit-bang serial port. It's my
> understanding the RS232 "idles" high, which would mean
> the logic level out of a max232 would be low. The start
> bit would then be logic high to the AVR.. Is this
> correct?
> 
> thanks
> 
>  - jim
> 
> 
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