Write a program to create a frequency of 2 HZ on pin PORTB1

-Write a program to create a frequency of 2 HZ on pin PORTB.1. Use Timer to create the delay. \" pleae use C code\"

Solution

Given delay is very unpractical, i think it should be 2KHz.

any way for creating a delay using Timer we need following equation for calculating the initial count in case of 16 bit timer count.

Initial count(in decimal)= (65536- (delay*clock frequency)/12)

then change decimal value to hex value . This is your initial count that is to be given into TH0 and TL0

#include <reg51.h>

void T0Delay(void);

void main(void)

{

while(1)

{

b.1=0x00

T0Delay();

b.1=0x01;

T0Delay();

}

}

void T0Delay()

{

TMOD = 0X01;

TL0=0X06;

TH0=0XFF;

TR0=1;

while(TF0==0);

TR0=0;

TF0=0;

}