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???
05/16/07 09:29
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#139314 - So where's the problem?
Responding to: ???'s previous message
Denis B said:
i want to push keypad, and to see address and data on lcd...
for writing to xdata register....

So where is the problem:

Denis B said:
keypad is working...

so you know how to get the keypresses

Denis B said:
lcd is worling...

so you know how to display data

SO where is the problem??

If you want to use scanf, then you will have to read your compiler Manual to find out how to get it to use the keypad;
If you want to use printf, then you will have to read your compiler Manual to find out how to get it to use the LCD.

It's as simple as that!

If you don't want to use the standard library functions (and avoiding scanf is probably a good idea), then you probably want to start by writing a function to read a single keypress from the keypad, and a function to write a single character to the LCD.

You then build on these to make functions to read a complete number from the keypad, and functions to write numbers, strings, etc to the LCD...






List of 29 messages in thread
TopicAuthorDate
writing to XDATA with KEYPAD and displaing on LCD            01/01/70 00:00      
   One step at a time            01/01/70 00:00      
      please..., see good my question...            01/01/70 00:00      
      let\'s make the guesswork, then...            01/01/70 00:00      
         yes..            01/01/70 00:00      
            So where's the problem?            01/01/70 00:00      
               how?            01/01/70 00:00      
                  Links            01/01/70 00:00      
                     i am using a KEIL            01/01/70 00:00      
                        So you're sorted, then!            01/01/70 00:00      
                           .... ok .... but ......            01/01/70 00:00      
                              relevant            01/01/70 00:00      
                                 What is the "working" code?            01/01/70 00:00      
                                    this code is working in my 89c51rd2            01/01/70 00:00      
                                       so do something like...            01/01/70 00:00      
                                          here is a question !!!!            01/01/70 00:00      
                                             Style            01/01/70 00:00      
                                                this is far from...            01/01/70 00:00      
                                                   Style vs Substance            01/01/70 00:00      
                                                      OK I take that one back...            01/01/70 00:00      
                                                         Language-Independent            01/01/70 00:00      
         Here is a typical problem caused by HLL use            01/01/70 00:00      
            When the only tool you have is a hammer            01/01/70 00:00      
               yes, registers mapped into XDATA space ......            01/01/70 00:00      
               Then the entire world looks like a nail ...            01/01/70 00:00      
   XDATA Addresses            01/01/70 00:00      
      u r right..            01/01/70 00:00      
         Fair enough, but...            01/01/70 00:00      
            :-)) u r right...            01/01/70 00:00      

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