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???
12/26/06 06:27
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 		 #130121 - no need of handshaking signals
Responding to: ???'s previous message
Sunish Nair said:

when u r communicating with two microcontrollers/like systems,there's no need of handshaking signals.
sunish nair


Sunish, I dont mean that handshaking signals ,infact lets say an I2C bus ,it does have latent communication signal protocols between the Master and slave its not like that a one way traffic , similarly in case of an RS485 network , there the Master instructs the slaves and the slaves responds to the master , we CAN NOT accomplish one way communication it hase to be a two way one ?.

Previous thread you said : one more thing,i only need to receive from the device
nothing to send to it.

If you dont send anything to that device this means no protocl implementation is there and therefor no hand shake?? , You actually need to address the devices to make the network WORK


This thread:
i will connect the hardware uart for rs 485 and thge software uart for receiving data from the external system
i think this will work


I feel you are missing the basic addressing and communication protocols ,you can study this- http://sourceforge.net/projects/ulan/ .

APC


List of 49 messages in thread
TopicAuthorDate
second serial port            01/01/70 00:00      
   google search            01/01/70 00:00      
   Didn't Search First            01/01/70 00:00      
      Yes , you can build your own software port.            01/01/70 00:00      
         No 3 on Jan's List            01/01/70 00:00      
            No 3 on Jan's List            01/01/70 00:00      
   have a look at here also            01/01/70 00:00      
      No 5 on Jan's Previous List            01/01/70 00:00      
   Have you considered 8052?            01/01/70 00:00      
      No 1 on Jan's List!            01/01/70 00:00      
      no problem in using 805x            01/01/70 00:00      
         do so, but first ...            01/01/70 00:00      
            I\'d say...            01/01/70 00:00      
               use something            01/01/70 00:00      
                  makes little sense ...            01/01/70 00:00      
                  No 6 on Jan's List - Why PIC?            01/01/70 00:00      
                     makes little sense ...            01/01/70 00:00      
                        1) why different architecture            01/01/70 00:00      
                        Sense            01/01/70 00:00      
                           Context            01/01/70 00:00      
                              Question for Ap Charles            01/01/70 00:00      
                                 Answer to Andy Neil            01/01/70 00:00      
                                    Fair point - so back to OP            01/01/70 00:00      
         Maybe one uArt is enough...            01/01/70 00:00      
   use Atmels            01/01/70 00:00      
      why use Atmel?            01/01/70 00:00      
         Maybe other architecture            01/01/70 00:00      
            why on earth do that            01/01/70 00:00      
               Don't let the pot call the kettle black ...            01/01/70 00:00      
                  I do not "call the kettle black" except..            01/01/70 00:00      
                     Noted            01/01/70 00:00      
                        I appreciate that Andy            01/01/70 00:00      
                           Erik's error rate            01/01/70 00:00      
                              you must be getting into the Christmas spirit            01/01/70 00:00      
               it's quite easy            01/01/70 00:00      
                  yechhh ... ATMEL (eewwww...)            01/01/70 00:00      
                  8051 -> AVR: not easy !!!            01/01/70 00:00      
                     good discussion            01/01/70 00:00      
                        How can you do this            01/01/70 00:00      
                           hand shaking            01/01/70 00:00      
                              no need of handshaking signals            01/01/70 00:00      
                                 you are right            01/01/70 00:00      
                              Not necessarily            01/01/70 00:00      
                     I confirm that            01/01/70 00:00      
         it all depends on what he can both get and afford            01/01/70 00:00      
            The architecture doesn't really matter            01/01/70 00:00      
               architectures            01/01/70 00:00      
                  There are many ways of defining "best"            01/01/70 00:00      
   how true            01/01/70 00:00      

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