xtest04_3.c

AT91sam7s 256 B/D example

/* ========================================================================== */
/*		     Xtest04_3.c : Integer Number Display	              */
/* ========================================================================== */
/*			  Designed and programmed by Duck-Yong Yoon in 2007.  */

#include "AT91SAM7S256.h"
#include "lib_AT91SAM7S256.h"
#include "OK7S256ads.h"

void LCD_4hex(unsigned int number)		/* display 4-digit hex number */
{ unsigned int i;

  i = (number >> 12) & 0x0000000F;		// 16^3
  if(i <= 9) LCD_data(i + '0');
  else       LCD_data(i - 10 + 'A');

  i = (number >> 8) & 0x0000000F;		// 16^2
  if(i <= 9) LCD_data(i + '0');
  else       LCD_data(i - 10 + 'A');

  i = (number >> 4) & 0x0000000F;		// 16^1
  if(i <= 9) LCD_data(i + '0');
  else       LCD_data(i - 10 + 'A');

  i = number & 0x0000000F;			// 16^0
  if(i <= 9) LCD_data(i + '0');
  else       LCD_data(i - 10 + 'A');
}

void LCD_5d(unsigned int number)		/* display 5-digit decimal number */
{ unsigned int i, flag;

  flag = 0;
  i = number/10000;				// 10^4
  if(i == 0) LCD_data(' ');
  else {     LCD_data(i + '0');
             flag = 1;
       }

  number = number % 10000;			// 10^3
  i = number/1000;
  if((i == 0) && (flag == 0))
             LCD_data(' ');
  else {     LCD_data(i + '0');
             flag = 1;
       }

  number = number % 1000;			// 10^2
  i = number/100;
  if((i == 0) && (flag == 0))
             LCD_data(' ');
  else {     LCD_data(i + '0');
             flag = 1;
       }

  number = number % 100;			// 10^1
  i = number/10;
  if((i == 0) && (flag == 0))
             LCD_data(' ');
  else {     LCD_data(i + '0');
             flag = 1;
       }

  i = number % 10;				// 10^0
  LCD_data(i + '0');
}

void LCD_16bin(unsigned int number)		/* display 16-bit binary number */
{
  LCD_data(((number >> 15) & 0x00000001) + '0'); // 2^15
  LCD_data(((number >> 14) & 0x00000001) + '0'); // 2^14
  LCD_data(((number >> 13) & 0x00000001) + '0'); // 2^13
  LCD_data(((number >> 12) & 0x00000001) + '0'); // 2^12
  LCD_data(((number >> 11) & 0x00000001) + '0'); // 2^11
  LCD_data(((number >> 10) & 0x00000001) + '0'); // 2^10
  LCD_data(((number >> 9) & 0x00000001) + '0');  // 2^9
  LCD_data(((number >> 8) & 0x00000001) + '0');  // 2^8  
  LCD_data(((number >> 7) & 0x00000001) + '0');  // 2^7
  LCD_data(((number >> 6) & 0x00000001) + '0');  // 2^6
  LCD_data(((number >> 5) & 0x00000001) + '0');  // 2^5
  LCD_data(((number >> 4) & 0x00000001) + '0');  // 2^4
  LCD_data(((number >> 3) & 0x00000001) + '0');  // 2^3
  LCD_data(((number >> 2) & 0x00000001) + '0');  // 2^2
  LCD_data(((number >> 1) & 0x00000001) + '0');  // 2^1
  LCD_data((number & 0x00000001) + '0');	 // 2^0
}

int main(void)
{
  unsigned int i;

  MCU_initialize();				// initialize AT91SAM7S256 & kit
  Delay_ms(50);					// wait for system stabilization
  LCD_initialize();				// initialize text LCD
  
  while(1)
    { LCD_string(0x80, "0x0000 = 00000 =");	// display 16-bit integer number
      LCD_string(0xC0, "0000000000000000");     
      Beep();

      for(i=1; i<= 0xFFFF; i++)			// integer number from 1 to 65535
        { LCD_command(0x82);			// display hexadecimal number
          LCD_4hex(i);
          LCD_command(0x89);			// display decimal number
          LCD_5d(i);
          LCD_command(0xC0);			// display binary number
          LCD_16bin(i);          
          Delay_ms(500);
        }
    }
}