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???
02/21/07 18:31
Modified:
  02/21/07 18:32
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 		 #133458 - Now, now, we don\'t split hair do we?
Responding to: ???'s previous message
Because I can name a few situations where your suggested pinout for cable
i.e. pins 4 and 5, and pins 6, 8, and 20 (based on the DB25 model) have to be connected together
(e.g. tiebacks) will fail since full hardware handshake IS required between two DTE devices and by 'faking' them on either side you'll interfere with their normal operation.

Who argued that:
every PC<=>MCU communication task operates under Windows
On the contrary! From what hat you've pulled this one?

As for applications, It is merely stated that PCs port is capable of handling 3-wire serial link.

IF application writter/mC circuit designer chooses to use loopback adapter or for that matter a full blown hardware handshaking with all bells and whistles it is entirely up to him. It has nothing to do with the fact that one can make regular rs232 link with PC while using just 3 wires if it suits his needs.

We are basically arguing against:
have to be connected together, else the PC won't talk.
because this is very incomplete statement. There is a lot of situations where you can't apply this reasoning. And we tried to point them out.

Best luck,
CN



List of 30 messages in thread
TopicAuthorDate
how do we test whether MAX232 is working            01/01/70 00:00      
   V+ and V-            01/01/70 00:00      
   Can I conclude then...            01/01/70 00:00      
      checking for working of serial port            01/01/70 00:00      
         You have excluded the most obvious first?            01/01/70 00:00      
   Be sure the cable is wired correctly            01/01/70 00:00      
      3 Wire            01/01/70 00:00      
         That doesn't seem to work with my old notebook            01/01/70 00:00      
            Configure the terminal program correctly            01/01/70 00:00      
               So far, It's never been an issue            01/01/70 00:00      
                  It's the application, not the PC            01/01/70 00:00      
      It's the application, not the PC            01/01/70 00:00      
         I have routinely done this in the past            01/01/70 00:00      
            Ive seen it working...            01/01/70 00:00      
               You missed my point            01/01/70 00:00      
                  Better safe than sorry, Eh?            01/01/70 00:00      
                     it's not all in the application            01/01/70 00:00      
                        but the OP stated            01/01/70 00:00      
                           True enough ...            01/01/70 00:00      
                        Now, now, we don\'t split hair do we?            01/01/70 00:00      
                           keep splitting :-)            01/01/70 00:00      
                           I've been fiddling with RS232 connections ...            01/01/70 00:00      
                     Ok, enough of twist and turn....            01/01/70 00:00      
                        I don\\\'t see what\\\'s not straight about this            01/01/70 00:00      
                           This has gone far enough.            01/01/70 00:00      
                              Guys, guys            01/01/70 00:00      
                              OK ,,, I see what you mean            01/01/70 00:00      
   @site administrator            01/01/70 00:00      
   @site administrator            01/01/70 00:00      
      Again... What was the solution?            01/01/70 00:00      

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