8051 based frequency counter using external interrupts.

[hassan]

hi
i want to get the code for frquency counter using 8051 with the help of external interrupts as i have also i folows and is not running properly. kindly help me in this matter.
code is :
#include <AT89X51.h>
# define T1 P3_2
#define RS P0_0
#define RW P0_1
#define E P0_2
#define dataline P2
void Delay(unsigned int time)
{
unsigned int i;
unsigned int j;
for(j=0;j<time;j++)
for(i=0;i<127;i++)
;
}
void lcddata(unsigned char j)
{
dataline=j;
RS=1;
RW=0;
E=1;
Delay(10);
E=0;
Delay(50);
}
void lcdcmd(unsigned char j)
{
dataline=j;
RS=0;
RW=0;
E=1;
Delay(10);
E=0;
Delay(50);
}

void Convert_Display(unsigned char value)
{
unsigned char x,d1,d2,d3;
x=value/10;
d1=value%10;
d2=x%10;
d3=x/10;
lcdcmd(0x38);
lcdcmd(0x0E);
lcdcmd(0x01);
lcdcmd(0x06);
lcdcmd(0x86);
Delay(50);
lcddata(d3+'0');
Delay(50);
lcddata(d2+'0');
Delay(50);
lcddata(d1+'0');
Delay(50);
}
unsigned char value;
void timer0() interrupt 0
{

TH1=0;


TL1=1;
value=TL1;
Convert_Display(value);
TR0=1;
TH1=1;
}
void main(void)
{T1=1;

IE=0x81;

TMOD=0x06;


IT0=1;
EX0 = 1; // Enable EX0 Interrupt

EA = 1; // Enable Global Interrupt Flag


while(1); }

[RWOLFEJR]

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