Microcontroller

[Vignesh Aithal]

hey, im building a microcontroller circuit to calculate the frequency of pulses since it is a part of my project. while coding i used counter 0 to count the number of pulses and timer 1 to provide the necessary delay.

when i teste in proteus, i got the expected output but when i did the circuit and loaded the code to microcontroller, it was not working.

what maybe the possible reason for that?

#include<reg51.h>

 

sbit ip=P3^4;

int ch=0;

 

void main()

{

 

P2=0;

while(1)

{

int i=0,j;

TMOD = 0x15;

ip=1;

for(j=0;j<5;j++)

{

TL0=0x00;

. TH0=0x00;

TR0=1;

for(i=0;i<20;i++)

{

TL1=0x0FF;

TH1=0x4B;

TR1=1;

while( TF1==0);

TF1=0;

TR1=0;

}

TR0=0;

}

ch=TL0;

TMOD = 0x20;

TH1 = 0x0FD;

SCON = 0x50;

TR1=1;

SBUF = ch;

while(TI == 0);

TI=0;

P2=TL0;

}

}

this is the code im using

please reply asap

[Ashutosh Bhatt]

i can not understand what u r doing? for counting pulses use any one timer as pulse counter and annother timer to generate exact 1 sec delay. after 1 sec delay count pulses in counter. convert it into decimal value. thats all

[Anonymous]

vignesh aithal,

              you made so many mistake on the prgm side. i.e (condition statement, using timer aas wrng).  

errors:

P2=0;

ip=1;

. TH0=0x00;

 

[Author]

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