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???
12/17/06 18:31
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 		 #129641 - Automatic serial data switch?
Responding to: ???'s previous message
Tomas Dabasinskas said:
Let me explain what I'm trying to achieve here...

That is always the best approach!

... looking for some activity on these 2 devices (serial 2,3) and once that happens download TAP message and save it in the buffer then transmit message on (seral1)

This sounds like basically just an automatic switch:

  • When you detect activity on Serial-2, you connect it through to the ASCOM;
  • When you detect activity on Serial-3, you connect it through to the ASCOM.

    For this, you don't need to process the data at all - merely detect activity on one line or the other, and control the switch as appropriate.

    Such things used to be available as ready made products; but, last time I looked (earlier this year), I couldn't seem to find them any more... :-(

    • List of 12 messages in thread
    TopicAuthorDate
    newbie interfacing rs232            01/01/70 00:00      
       details...            01/01/70 00:00      
          re: details...            01/01/70 00:00      
             Automatic serial data switch?            01/01/70 00:00      
                B & B?            01/01/70 00:00      
                   A bit OTT?            01/01/70 00:00      
       Try DS89C450, AT89S2051 (qty 2)            01/01/70 00:00      
          Why more microcontrollers?            01/01/70 00:00      
             is an external UART cheaper?            01/01/70 00:00      
                Are we over-complicating this?            01/01/70 00:00      
                   Can switch autmatically in hardware            01/01/70 00:00      
       Thanks            01/01/70 00:00      

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