SOFT PWM For MikroC For PIC PIC12F675

void interrupt()
{
  if (INTCON.TMR0IF ==1) // timer 0 interrupt flag
  {
    GPIO = ~GPIO;      // Toggle PORTB bit0 LED
    INTCON.TMR0IF = 0;         // clear the flag
    INTCON.TMR0IE = 1;         // reenable the interrupt
    TMR0 = 204;           // reset the timer preset count
  }

}



// code starts here...
void main()
{

  // setup portb to show the interrupts by blibking LEDs
  TRISIO = 0;    // PORT is all output...to show the interrupts
  GPIO = 0;       // start with all outputs low
  ANSEL = 0;

//Timer0 Registers Prescaler= 1 - TMR0 Preset = 204 - Freq = 38461.54 Hz - Period = 0.000026 seconds
OPTION_REG.T0CS = 0;  // bit 5  TMR0 Clock Source Select bit...0 = Internal Clock (CLKO) 1 = Transition on T0CKI pin
OPTION_REG.T0SE = 0;  // bit 4 TMR0 Source Edge Select bit 0 = low/high 1 = high/low
OPTION_REG.PSA = 1;   // bit 3  Prescaler Assignment bit...0 = Prescaler is assigned to the WDT
OPTION_REG.PS2 = 0;   // bits 2-0  PS2:PS0: Prescaler Rate Select bits
OPTION_REG.PS1 = 0;
OPTION_REG.PS0 = 0;
TMR0 = 238;             // preset for timer register


// Interrupt Registers
  INTCON = 0;           // clear the interrpt control register
  INTCON.TMR0IE = 1;        // bit5 TMR0 Overflow Interrupt Enable bit...1 = Enables the TMR0 interrupt
  INTCON.TMR0IF = 0;        // bit2 clear timer 0 interrupt flag
  INTCON.GIE = 1;           // bit7 global interrupt enable


  while(1)  //endless loop
  {
  }
}