Counter up/down

[V]

Hello, I have a problem with this program. When I call void izobrazqvane () my program breakdown.

 

#include <at89x51.h>
#include “delay.h”
#include “lcd.h”
#define PRELOAD01 (65536 – (tWord)(OSC_FREQ / (OSC_PER_INST * 1020)))
#define PRELOAD01H (PRELOAD01 / 256)
#define PRELOAD01L (PRELOAD01 % 256)

#define LED1 P1_6 //sin
#define LED2 P1_7 //cherven
#define BUT1 P3_4
#define BUT2 P3_5
#define CNTZAK
#define LCD_RS P1_5
#define LCD_EN P1_4
#define LCD_DATA P1

__data __at (0x020) unsigned char BUT1FL;

__bit __at (0x00) BUT1FL_0;
__bit __at (0x01) BUT1FL_1;
__bit __at (0x02) BUT1FL_2;
__bit __at (0x03) BUT1FL_3;
__bit __at (0x04) BUT1FL_4;
__bit __at (0x05) BUT1FL_5;
__bit __at (0x06) BUT1FL_6;
__bit __at (0x07) BUT1FL_7;

__data __at (0x022) unsigned char BUT2FL;

__bit __at (0x10) BUT2FL_0;
__bit __at (0x11) BUT2FL_1;
__bit __at (0x12) BUT2FL_2;
__bit __at (0x13) BUT2FL_3;
__bit __at (0x14) BUT2FL_4;
__bit __at (0x15) BUT2FL_5;
__bit __at (0x16) BUT2FL_6;
__bit __at (0x17) BUT2FL_7;

__data __at (0x030) unsigned char CNT1;
__data __at (0x031) unsigned char CNTB1;
__data __at (0x032) unsigned char CNT2;
__data __at (0x033) unsigned char CNTB2;
/*__data __at (0x034) unsigned char CNT3;
__data __at (0x035) unsigned char CNT4;
__data __at (0x036) unsigned char CNT1;*/
void izobrazqvane () //
{
unsigned char counter_button[1];
counter_button[0] = CNT2+0x30;
lcd_puts(counter_button); //display on LCD
}

void led_sw (void)
{

LED2=!LED2;
}
void but1do () // count down
{

LED1=!LED1;
BUT1FL_5=1;
CNT2=CNT2-5;
if(CNT2==5)
{
CNT2=15;

}
 izobrazqvane ();// crashes
}

void but2do () // count up
{

LED1=!LED1;
BUT2FL_5=1;
CNT2=CNT2+5;
if(CNT2==250)
{
CNT2=240;

}
izobrazqvane ();

}

void but1obr ()
{
if(BUT1FL_7==1)
{
if(BUT1FL_5==0) //ako e 1 – butonat e otraboten
{
if(BUT1FL_0==0) //startira 30 ms zakasnenie
{
BUT1FL_0=1;
CNTB1=3;
}

else
{
if(BUT1FL_2==0)
{
CNTB1–;
if(CNTB1==0)
{
BUT1FL_2=1;
}

else
{
;
}
}

else
{
but1do();
}
}
}

else
{
;
}
}
else
{
BUT1FL=0;
}
}

void but2obr ()
{
if(BUT2FL_7==1)
{
if(BUT2FL_5==0) //ako e 1 – butonat e otraboten
{
if(BUT2FL_0==0) //startira 30 ms zakasnenie
{
BUT2FL_0=1;
CNTB2=3;
}

else
{
if(BUT2FL_2==0)
{
CNTB2–;
if(CNTB2==0)
{
BUT2FL_2=1;
}

else
{
;
}
}

else
{
but2do();
}
}
}

else
{
;
}
}
else
{
BUT2FL=0;
}
}

void main(void)
{

lcd_init();
// unsigned char counter_button[5];
// counter_button[0] = CNT2 + 0x30;
// lcd_goto(3);
// lcd_puts(“coun”);

{

TMOD = 0x11; // timer 0
TR0 = 1;
TH0 = 0xDF; //5 ms ?
TL0 = 0x75;
ET0 = 1;
IT0 = 1;
EA = 1;
CNT1 = 50; // umnojava timera i se poluchava zakusnenieto
__asm // nulira operativnata pamet
MOV R0,#0x2F
RES1: MOV @R0,#0
DJNZ R0,RES1
__endasm;

SP=0x40;
}

while(1)
{

if(BUT1==0)
{
BUT1FL_7=1;
}
else
{
BUT1FL_7=0;
}

if(BUT2==0)
{
BUT2FL_7=1;
}
else
{
BUT2FL_7=0;
}

}
}

void timer_0 (void) __interrupt 1
{
TH0 = 0xEF; //5 ms
TL0 = 0xBA;
CNT1–;
if(CNT1==0)
{
CNT1=CNT2;
led_sw();
}

but1obr();
but2obr();
// izobrazqvane ();
}

/*============================================================================================
Programa za LCD
==============================================================================================*/

void LCD_STROBE (void);

int reverse(unsigned char byte_to_shift)
{
unsigned char U8byte_new = byte_to_shift;

unsigned char bit0_Mask = 0x01;
unsigned char bit1_Mask = 0x02;
unsigned char bit2_Mask = 0x04;
unsigned char bit3_Mask = 0x08;
unsigned char bit4_Mask = 0x10;
unsigned char bit5_Mask = 0x20;
unsigned char bit6_Mask = 0x40;
unsigned char bit7_Mask = 0x80;

U8byte_new = ((byte_to_shift&bit7_Mask)>>3)|((byte_to_shift&bit6_Mask)>>1)|((byte_to_shift&bit5_Mask)<<1)|((byte_to_shift&bit4_Mask)<<3)| ((byte_to_shift&bit3_Mask)>>3)|((byte_to_shift&bit2_Mask)>>1)|((byte_to_shift&bit1_Mask)<<1)|((byte_to_shift&bit0_Mask)<<3);

return U8byte_new;
}

void lcd_write(unsigned char c)
{
unsigned char data = (unsigned char)(( c >> 4 ) | (LCD_RS << 5)) ;// 0x0F original ||

// delay_70u();

LCD_DATA = data;
LCD_STROBE();
data = (unsigned char)((c & 0x0F) | (LCD_RS << 5));
LCD_DATA = data;
LCD_STROBE();

}

/*
* Clear and home the LCD
*/

void lcd_clear(void)
{
LCD_RS = 0;
lcd_write(0x1);
delay_10u();
}

/* write a string of chars to the LCD */

void lcd_puts(const char *s)
{
LCD_RS = 1; // write characters
while(*s)
{
lcd_write(reverse(*s));
s++;
}
}

/* write one character to the LCD */

void lcd_putch(char c)
{
LCD_RS = 1; // write characters
lcd_write( c );
}

/*
* Go to the specified position
*/

void lcd_goto(unsigned char pos)
{
LCD_RS = 0;
lcd_write(0x80+pos);
}

/* initialise the LCD – put into 4 bit mode */

void lcd_init()
{
char init_value;

init_value = 0x3;

LCD_RS = 0;
LCD_EN = 0;

delay_70ms(); // delay for 150ms
delay_70ms();
delay_10ms();

LCD_DATA =0xC;
LCD_STROBE();
delay_5ms();

LCD_DATA =0xC;
LCD_STROBE();
delay_100u();

LCD_DATA =0xC;
LCD_STROBE();
delay_100u();

LCD_DATA =0x4;
LCD_STROBE();
delay_100u();

LCD_DATA =0x4;
LCD_STROBE();
LCD_DATA =0x1;
LCD_STROBE();
delay_100u();

LCD_DATA =0x0;
LCD_STROBE();
LCD_DATA =0x1;
LCD_STROBE();
delay_100u();

LCD_DATA =0x0;
LCD_STROBE();
LCD_DATA =0x8;
LCD_STROBE();
delay_5ms();

LCD_DATA =0x0;
LCD_STROBE();
LCD_DATA =0x6;
LCD_STROBE();
delay_100u();

LCD_DATA =0x0;
LCD_STROBE();
LCD_DATA =0x3;
LCD_STROBE();
delay_100u();

LCD_RS = 1;
}

void LCD_STROBE(void)
{
LCD_EN = 1;
delay_10u();
LCD_EN= 0;
}

 

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