Timer 0 as counter

The assembly code is
MOV TMOD,#25h
MOV TH0,#00h
MOV TL0,#00h
SETB P3.4
AGAIN:SETB TR0
MOV R3,TL0
MOV R4,TH0
Back: JNB TF0,Back
CLR TR0
CLR TF0
SJMP AGAIN

The c code is

void main()
{ unsigned int pulsecount,Fpulse_count; while(1) { TH0=0x00; TL0=0x00; P3=0xFF; TR0=1; /* Start the timer for counting pulses*/ if(TF0!=1) { Fpulse_count++; } pulsecount=TH0*256+TL0; TR0=0; TF0=0; }
}

The assembly code is
MOV TMOD,#25h
MOV TH0,#00h
MOV TL0,#00h
SETB P3.4
AGAIN:SETB TR0
MOV R3,TL0
MOV R4,TH0
Back: JNB TF0,Back
CLR TR0
CLR TF0
SJMP AGAIN

The c code is

void main()
{ unsigned int pulsecount,Fpulse_count; while(1) { TH0=0x00; TL0=0x00; P3=0xFF; TR0=1; /* Start the timer for counting pulses*/ if(TF0!=1) { Fpulse_count++; } pulsecount=TH0*256+TL0; TR0=0; TF0=0; }
}

Ugh! You didn't preview that, did you?

There's this little note, two bullet items above where you posted that said how do deal with source code. How did you miss it?

Anyway, with what little time I spent reading your unformatted code, I was able to see some discrepancies between the assembly and C. Post it again using the source code formatting tags and I'll bet we see more!

The C code is void main() { unsigned int Fpulse_count; while(1) { THO=0x00; TL0=0x00; P3=0xFF; TR0=1; if(TF!=1) { Fpulse_count++; } countpulses=TH0*256+TL0; }

I have tried to arrange it in proper order but it is posting like this.

Kindly reply on this only.

"I have tried to arrange it in proper order but it is posting like this.

Kindly reply on this only."

OK then. Right there above the message box where you entered or pasted that code, there were instructions how to post code. How did you miss it yet again? It's the line that yas the note about using HTML 'pre' and '/pre' tags.

The C code is

void main()
{
  unsigned int Fpulse_count;
  while(1)
 {
   THO=0x00;
   TL0=0x00;
   P3=0xFF;
   TR0=1;
   if(TF!=1)
   {
    Fpulse_count++;
   }
  countpulses=TH0*256+TL0;
 }

}

This time i am correct.
Now you can reply.

That is not equivalent to the assembly code. For starters, you are not configuring the timer. Look back at your assembly code for TMOD.

No i have configured the timer as TMOD=0x25;

I forgot to write it.
In main(), my first instruction is TMOD=0x25;

Are you saying that you typed in the code when posting?

Are you one of the few who have managed to get a computer without any copy/paste function?

How will we know what other information you forgot to write when "duplicating" the code?

"This time i am correct."

Yes, at last!

For the benefit of others, perhaps you could suggest how Keil could improve the site to make these instructions clearer?

What was it about the current format the made it so hard for you to find the instructions?

Can you please send me the answer of my query which i have asked you.

Did you also forget to write

    TR0=0;
    TF0=0;

?

"In main(), my first instruction is TMOD=0x25;"

OK then, we'll just assume that's true. If you want the counter registers to count, why do you continually zero them?

Can you please send me the answer of my query which i have asked you.
sure - and make fred pigeons fly in through your window.

If you copied and pasted your actual code AS SUGGESTED so there was no need to read 5 entries to figure out what you believe you have and you then posted what the problem with that is, you would get help.

Very few, if any, will reposnd to give me the code, and do it NOW

Erik

"Very few, if any, will reposnd to give me the code, and do it NOW"

Oh, plenty will respond - but not by sending code!