PWM Code to for mosfet gate

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25

Try this code
The outputs are on pins 9 and 10

#include <avr/io.h>
#include <avr/interrupt.h>

//---------------------------
// Interrup Service Routines 
// To PWM LED for debugging

ISR(TIMER1_COMPA_vect)
{
  PORTB &= ~_BV(PB5);
}

ISR(TIMER1_OVF_vect)
{
  PORTB |= _BV(PB5);
}
//---------------------------

void setup()
{ 
	// Set-up GPIOs
  DDRB |= _BV(PB5); // LED
  DDRB |= _BV(PB1); // OC1A output pin 9
  DDRB |= _BV(PB2); // OC1B output pin 10
  PORTB &= ~ _BV(PB5); // Turn off LED
		
	// Set-up Timer 1 for PWM
	// ICR1H and ICR1L – Input Capture Register 1 (NOT used)
	// Fast PWM mode 6, prescaler = 1
	// output on OC1A, inverted on OC1B
   
	TCCR1A = 0b10110010; // COM1A1 COM1A0 COM1B1 COM1B0 0 0 WGM11 WGM10 
	TCCR1B = 0b00001001; // ICNC1 ICES1 0 WGM13 WGM12 CS12 CS11 CS10 
	TCCR1C = 0;
	OCR1A = 128;
	OCR1B = 128;
	TCNT1 = 0;
  // Enable interrupts to PWM the LED (for debugging)
  // Delete if not wanted 
  TIMSK1 |= (_BV(OCIE1A) | _BV(TOIE1)); // Interrupt Mask Register
  // TIFR1 = 0x00; // Interrupt Flag Register

}

void loop()
{
  // Change the PWM Duty Cycle
  for (int i=1; i<512; i++)
  {
    OCR1A = i;
    OCR1B = i;
    delay(5);
  }
		
}