//ATtiny1614 bridge I2C

#include <Wire.h>

int i = 0;
int j = 0;

int led = 1;

void setup() {
  Serial.begin(9600);
  Wire.begin();

  pinMode(led, OUTPUT); // led
}

void loop()
{

  for (i = 0; i <= 3; i++) { // 0,1,2,3

    Wire.beginTransmission(8); //slave number 8
    if ( i == 1) {
      Wire.write(1);
      Serial.println("1");
    } else {
      Wire.write(0);
      Serial.println("0");
    }
    Wire.endTransmission();

    Wire.beginTransmission(9); //slave number 8
    if ( i == 2) {
      Wire.write(1);
      Serial.println("1");
    } else {
      Wire.write(0);
      Serial.println("0");
    }
    Wire.endTransmission();

    for (j = 0; j <= i; j++) { // blink i times
      digitalWrite(led, HIGH);
      delay(200);
      digitalWrite(led, LOW);
      delay(200);
    }

    delay(1000);
  }

}