Im at a dead end...

Projects General Guidance
6

I changed those to regular variables as well, but the timers still don't sync, so the comparison is always off for the time delay we need as the pwm duty cycle

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

bool t1_changed = false;
bool t2_changed = false;

void setup() {
  Serial.begin(115200);
  noInterrupts();
  pinMode(2, INPUT);
  pinMode(3, INPUT);
  pinMode(9, OUTPUT);
  pinMode(10, OUTPUT);
  TCCR2A = _BV(COM2A0) | _BV(COM2B1) | _BV(WGM20);
  TCCR2B = _BV(CS22);
  OCR2A = 0;
  OCR2B = 0;
  TCNT2 = 0;
  interrupts();

  attachInterrupt(0, t1_ISR, RISING);     //enable interrupt service routines on pins 2 and 3
  attachInterrupt(1, t2_ISR, RISING);
}

volatile unsigned int t1;
volatile unsigned int t2;
//volatile unsigned int oldt1, oldt2;

void loop() {
 
  while(!(t1_changed && t2_changed))
 {
  Serial.println(t2 ^ t1);
  noInterrupts();
  t1_changed = false; t2_changed = false;
 
    if(t1 < t2)
    {
      OCR2A = t2 ^ t1;   //duty cycle   50%
      OCR2B = 0;
    }
    else if(t2 < t1)
    {
      OCR2B = t1 ^ t2;
      OCR2A = 0;
    }
 // t1_changed=true;
  //t2_changed=true;
  interrupts();
}}

void t1_ISR()
{
  //Serial.println("ISR");
  t1 = TCNT2;
  t1_changed = true;
   // Serial.println(t1);
  //oldt1=t1;
}

void t2_ISR()
{
  //Serial.println("ISR2");
  t2 = TCNT2;
  t2_changed = true;
   // Serial.println(t2);
 // oldt2=t2;
}