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Seven Segment display source code AID plz help !!

Discussion in 'C' started by naturist, Dec 1, 2009.

  1. naturist

    naturist New Member

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    I've been asked to make a Seven segment display based project:

    Objectives:

    Interface segments display components with HCS12 controller, chose port A for carrying data and port E for segment activation.

    I need this (Interface a keypad in port B and write program to restart the display content when there is a key press.)

    Display all Alphabets and numerals in scrolling mode.


    I've done so far this much and am lost with the keypad part will you please help me out !!:confused:


    Source Code:
    Code:
    #include <hidef.h>      /* common defines and macros */
    #include <mc9s12e128.h>     /* derivative information */
    
    
    #pragma LINK_INFO DERIVATIVE "SampleS12"
    
    void delay (int);
    void delay (int x) {
      int y;
      while (x>0)  {
        
        for (y=0;y<5000;y++) {
          ;
        }
        x--;
      }
    }
    
    void portInit (void) ;
      
      void portInit() {
        
        
        PORTE = 0X00;
        DDRE = 0XFF;
        PORTA= 0X00;
        DDRA = 0XFF;
        
         
      }
    
    void main(void) {
    void segment_display(char s ) ; 
    
    char alpha[] = {0X08,0X03,0X46,0X21,0X06,0X0E,0X10,0X09,0X79,0X71,0X7F,0X47,
    0X7F,0X2B,0X40,0X0C,0X7F,0X0F,0X12,0X07,0X41,0X7F,0X7F,0X7F,0X11,0X7F
    };
    char segment[]={0X80,0X00};
    char size ;
    unsigned int disp;
    
    char name[]="CALEDONIANZCOLLEGEZOFZENGINEERING";
    portInit() ;
    
      
    
     [COLOR=Red] /* put your own code here */[/COLOR]
      EnableInterrupts;
      for(;;) {
      PORTE = PORTA ;
      
      for(size=0;name [size] !='\0';size++) {
        for (disp=0;disp<34;disp++){
          PORTE = segment[0] |alpha[name[size]-65];
          delay(20);
          
          PORTA = segment[1] |alpha[name[size+1]-65];
          delay (20);
          
          PORTE = segment[2] |alpha[name[size]-65];
           delay (20);
           
          PORTA = segment[3] |alpha[name[size+1]-65];
          delay (20);
          
          PORTE = segment[4] |alpha[name[size]-65];
           delay (20);
           
          PORTA = segment[5] |alpha[name[size+1]-65];
           delay (02);
           
          PORTE = segment[6] |alpha[name[size]-65];
           delay (20);
           
            PORTA = segment[7] |alpha[name[size+1]-65];
           delay (20);
           
           
        }
      }
      } /* wait forever */
    }
    please mail me the solution to:
    *
    naturist.life@hotmail.com

    thank you in advance
     
    Last edited by a moderator: Dec 1, 2009
  2. Gene Poole

    Gene Poole New Member

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    Is this microcontroller code?
     
  3. naturist

    naturist New Member

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    yes it is, i just want a start point and ill finish it up myself, it's like it's bit different that the original C#...thnx
     

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