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???
12/16/05 10:10
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#105338 - why asynchronous serial
Responding to: ???'s previous message
For the "outside of box", the asynchronous serial connection ("UART", "RS232") has an advantage of being rather noise-resistant and sort of self-timing (or permanently resynchronised).

And widespread, too.

Both I2C and SPI gets completely confused by a single glitch on the clock line.

If you want to experiment, you can try using Manchester or any other self-clocking scheme, but you will then need to develop your own transmitter and receiver. Using microcontroller and bit-banging, you will be restricted to rather low speeds.

Oh yes, and for home automation... Do you want to discuss it in depth, perhaps in a new thread? Meantime, a picture of what such a project might involve...

Jan Waclawek


List of 15 messages in thread
TopicAuthorDate
Physical layer            01/01/70 00:00      
   Not RS232            01/01/70 00:00      
      Home networking            01/01/70 00:00      
         why asynchronous serial            01/01/70 00:00      
            I am not doing!            01/01/70 00:00      
               cables            01/01/70 00:00      
            Jan, there IS a (b) and (/b)            01/01/70 00:00      
               Brevity is soul of wit            01/01/70 00:00      
               Brevity is soul of wit            01/01/70 00:00      
         Because it's genius!            01/01/70 00:00      
            now a word            01/01/70 00:00      
            Interesting!            01/01/70 00:00      
   Maybe            01/01/70 00:00      
      pray explain            01/01/70 00:00      
         OK            01/01/70 00:00      

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