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Driving Seven Segments ( C/C )

 
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Kumara



Joined: 16 Oct 2013
Posts: 7
Location: Sri Lanka

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Driving Seven Segments ( C/C )
PostPosted: Thu Oct 17, 2013 3:36 am     Reply with quote
Dear Friends,
This is a CCS C code for driving two seven segments ( cathode common ).It is counting up to 99.
Code:

#include <16F84A.h>               // Pic Microcontroller (MCU) Select
#fuses NOWDT,HS, NOPUT, NOPROTECT // Fuses
#use delay(clock=20000000)        // Crystal Oscillator Frequency ( 20 MHZ)

   int count;
   int k;
   byte CONST LED_MAP[10] =
   {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x67}; // LOOKUP TABLE FOR SSD
   void display_number( int n )

    {

      for(k=0;k<=250;k++)           // Delay ms250
         {
      output_b(LED_MAP[n/10 % 10]); // Left digit (10S) Pin_A4
      output_high(PIN_A4);
      delay_ms(2);
      output_low(PIN_A4);

      output_b(LED_MAP[n%10]);      // Right digit (1S) Pin_A3
      output_high(PIN_A3);
      delay_ms(2);
      output_low(PIN_A3);
         }
     }

      void main()                   // Main block
      {
      int count=1,i;

      while(TRUE)                   // Endless loop
         {
            for(i=0;i<=100;i++);
            {
            display_number(count);
            count = (count==99) ? 1 : count+1;
            }
        }
   }
oxo



Joined: 13 Nov 2012
Posts: 219
Location: France

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PostPosted: Thu Oct 17, 2013 4:16 am     Reply with quote
Why are you posting code from other peoples work?

http://www.ccsinfo.com/forum/viewtopic.php?p=103549
dyeatman



Joined: 06 Sep 2003
Posts: 1924
Location: Norman, OK

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PostPosted: Thu Oct 17, 2013 6:01 am     Reply with quote
It looks like code from a CCS exercise with additional comments and
changed to another processor, but useful for beginners in any case.
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