xtest07_3.c

AT91sam7s 256 B/D example

/* ========================================================================== */
/*     Xtest07_3.c : Integer Number Display without and with Sign on GLCD     */
/* ========================================================================== */
/*			  Designed and programmed by Duck-Yong Yoon in 2007.  */

#include <stdlib.h>
#include "AT91SAM7S256.h"
#include "lib_AT91SAM7S256.h"
#include "OK7S256ads.h"
#include "OK7S256Korean.h"

void GLCD_2d(unsigned int number)		/* display 2-digit decimal number */
{ unsigned int i;

  i = number/10;				// 10^1
  if(i == 0) GLCD_English(0,' ');
  else       GLCD_English(0,i + '0');

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

void GLCD_s2d(signed int number)		/* display signed 2-digit decimal number */
{
  if(number >= 0)				// sign
    GLCD_English(0,'+');
  else
    GLCD_English(0,'-');

  GLCD_2d(abs(number));				// magnitude
}

void GLCD_4d(unsigned int number)		/* display 4-digit decimal number */
{ unsigned int i, flag;

  flag = 0;
  i = number/1000;				// 10^3
  if(i == 0) GLCD_English(0,' ');
  else {     GLCD_English(0,i + '0');
             flag = 1;
       }

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

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

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

void GLCD_s4d(signed int number)		/* display signed 4-digit decimal number */
{
  if(number >= 0)				// sign
    GLCD_English(0,'+');
  else
    GLCD_English(0,'-');

  GLCD_4d(abs(number));				// magnitude
}

int main(void)
{
  unsigned int i, j;
  signed int x, y;

  MCU_initialize();				// initialize AT91SAM7S256 & kit
  Delay_ms(50);					// wait for system stabilization
  LCD_initialize();				// initialize text LCD
  GLCD_clear();		               		// initialize GLCD screen

  LCD_string(0x80,"Graphic LCD Test");          // display title on text LCD
  LCD_string(0xC0," Integer Number ");

  while(1)
    { GLCD_string(0,0,1," 何龋 绝绰 沥荐 ");	// multiplication without sign
      GLCD_string(1,0,0," 00 x 00 = 0000 ");
      GLCD_string(2,0,1," 何龋 乐绰 沥荐 ");	// multiplication with sign
      GLCD_string(3,0,0,"+00x(+00)= +0000");

      Beep();
      for(i = 10; i <= 90; i += 10)		// multiplication without sign
        for(j = 10; j <= 90; j += 10)
          { GLCD_xy(1,1); GLCD_2d(i);		// display multiplicand
            GLCD_xy(1,6); GLCD_2d(j);		// display multiplier
            GLCD_xy(1,11); GLCD_4d(i*j);	// display multiplication
            Delay_ms(1000);
          }

      Beep();
      for(x = -90; x <= +90; x += 10)		// multiplication with sign
        for(y = -90; y <= +90; y += 10)
          { GLCD_xy(3,0); GLCD_s2d(x);		// display multiplicand
            GLCD_xy(3,5); GLCD_s2d(y);		// display multiplier
            GLCD_xy(3,11); GLCD_s4d(x*y);	// display multiplication
            Delay_ms(1000);
          }
    }
}