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???
04/29/09 23:32
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 		 #164946 - Monitor the LCD databus then send via 485
Responding to: ???'s previous message
Hi all,

Thanks for you guys contribution.

I have the source code of the board A design. And the reason why I don't use its RS485 because I don't want the communication in between A1, A2,A3 and so on to be affected.

I agree with Neil that I may:

1. Feed those DB0 - DB7, RD and WR signal to a 2 byte data on board B.

2. Send the data over to the remote board C via RS485.

3. Mimic on board C display by using the same file (e.g. LCD.c) I use to write on LCD of board A.

Is that realistic?

and the delay time since I capture the data from board A, write on board B, send via RS485 and mimic on board C would not make any adverse effect on LCD display of board C?

Thanks,

List of 24 messages in thread
TopicAuthorDate
How to read and redisplay from LCD databus?            01/01/70 00:00      
   Spy on the Data & Control lines            01/01/70 00:00      
      Can be hard to be fast enough            01/01/70 00:00      
   Shouldn't be a problem            01/01/70 00:00      
      some HW might be needed            01/01/70 00:00      
         Monitor the LCD databus then send via 485            01/01/70 00:00      
         I don't see a place for the 805x            01/01/70 00:00      
      Re: Shouldn't be a problem            01/01/70 00:00      
         some basic questions            01/01/70 00:00      
            Re:some basic questions            01/01/70 00:00      
               20 Meters            01/01/70 00:00      
                  Re: 20 Meters            01/01/70 00:00      
      Signal timing and command timing separate issues            01/01/70 00:00      
         Check the datasheet ...            01/01/70 00:00      
            Re: Check the datasheet ... and test on LCD of board B first            01/01/70 00:00      
               A CPLD at each end would do nicely            01/01/70 00:00      
                  Re: A CPLD at each end would do nicely            01/01/70 00:00      
                     it depends on requirements            01/01/70 00:00      
                        Watch out for assumptions about busy            01/01/70 00:00      
                           If that gets to be an issue ...            01/01/70 00:00      
                              slave timing            01/01/70 00:00      
                                 I doubt that will work.            01/01/70 00:00      
   I had done something like this in past            01/01/70 00:00      
      Re: I had done something like this in past            01/01/70 00:00      

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