Problem with TIMER0 Interrupt

Hi,
I execute the following lines of code and
expect me that the program will deliver a 1Hz
pulse train on PIN RA2. the problem is that
I only get 6 pulses from RA2 (LED). I Send you
an image of the simulation. Can you see anything
wrong?
Thank you!Attachment 16283

Code:

---

#include <pic.h>
#include <htc.h>


void Initialization ();

__CONFIG(FOSC_LP & WDTE_ON & PWRTE_OFF & CP_OFF);
#define _XTAL_FREQ 32768             

#define LED RA2

int S = 0;

void main()
{
    Initialization ();
        while (1)
        {
                if (S)
                {
                        S=0;
                        LED = 1;
                        __delay_us (1);
                        LED = 0;
                       
                }
        } 
}

void Initialization(void)
{
        TRISA = 0b00000000;                     
        TRISB = 0b00000001;                 
        OPTION_REG = 0b00000100;
        INTCON = 0b10100000;               
        TMR0 = 0;                                               
        LED = 0;
 }

void interrupt tc_int(void)
{   
        if (T0IF)
        {       
                T0IE = 0;
                S = S+1;
                T0IF = 0;
                T0IE = 1;
                TMR0 = 0;
        }
}

---

Looks like Microchip C code; no idea which MCU.

Tim S.

Attachment 16285

The old one: PIC16F84

Looking at your code; I question this line.

Code:

---

S=0;

---

Would not

Code:

---

S--;

---

Be more correct?

And, is the "if" statement correct?
Edit: Looks like the "if" statement will not make a difference from my idea of using an while since the if is inside of a for ever while loop.

Tim S.

The next thing to try would be commenting out this line

Code:

---

TMR0 = 0;

---

In the interrupt tc_int.

Been over 10 years since I did PIC programming.

Tim S.