main.c

CODE for embedded C ,hand coding version

/*--------------------------------------------------------------*-
  Main.C
 Author : 06_Digital_Media 
  ----------------------------------------------------------------
  Illustrating the use of bitwise operators
-*---------------------------------------------------------------*/
#include<stdio.h>
void Display_Byte(const unsigned char);

/*................................................................*/
int main(){
  unsigned char x = 0xFE;
  unsigned int y = 0x0A0B;
  printf("%-35s","x");
  Display_Byte(x);
  
  printf("%-35s","Bitwise AND [x & 0x0f]");
  Display_Byte(x & 0x0f);
  
  printf("%-35s","1s complement [~x]");
  Display_Byte(~x);

  printf("%-35s","Bitwise OR [x | 0x0f]");
  Display_Byte(x | 0x0f);

  printf("%-35s","Bitwise XOR [x ^ 0x0f]");
  Display_Byte(x ^ 0x0f);

  printf("%-35s","Left shift,1 place [x<<=1]");
  Display_Byte(x <<= 1);
  
  x = 0xfe ;/*Return x to original value */
  printf("%-35s","Right shift,1 place [x>>=4]");
  Display_Byte(x >>= 4);

  printf("\n\n");

  printf("%-35s","Display MS byte of unsigned int y");
  Display_Byte((unsigned char)( y >> 8 ));

  printf("%-35s","Display LS byte of unsigned int y");
  Display_Byte((unsigned char)( y & 0xff ));

  return 0;
  
 }

 /*--------------------------------------------------------------*/
 void Display_Byte(const unsigned char CH){
  unsigned char i , c= CH;
  unsigned char Mask =  1 << 7;
  for( i =1 ; i<= 8 ; i++){
  
    putchar(c & Mask ? '1' : '0');
  }

  putchar ('\n');

 }

 /*--------------------------------------------------------------*-
 --------END OF FILE----------------------------------------------
 -*---------------------------------------------------------------*/