const int  LED_BUILTIN = 2; 
// setup function runs once - once press reset or power the board
void setup() {
  pinMode (LED_BUILTIN, OUTPUT);   // LED_BUILTIN as an output.
  Serial.begin (115200);
  xTaskCreatePinnedToCore (
    loop2,     // Function to implement the task
    "loop2",   // Name of the task
    4000,      // Stack size in bytes e.g 8 mb
    NULL,      // Task input parameter
    0,         // Priority of the task
    NULL,      // Task handle.
    0          // Core where the task should run 0 or 1
  );
    xTaskCreatePinnedToCore (loop3,"loop3",4000,NULL,1,NULL,0);
}
void loop() {
  // Main loop is unused
}
// the loop2 function also runs forver but as a parallel task
// on core 0
void loop2 (void* pvParameters) {
  while (1) {
    Serial.print ("Hello");
    vTaskDelay (200); // wait for 0.2 second non blocking
    Serial.println (" World");
    vTaskDelay (500); // wait for half a second non blocking
  }
}
// the loop3 function also runs forver but as a parallel task
// on core 0 slight change in timing may happen as per scheduling
void loop3 (void* pvParameters) {
  while (1) {
  digitalWrite (LED_BUILTIN, HIGH);  // turn the LED on 
  vTaskDelay (1000);  // wait for 2 seconds non blocking
  digitalWrite (LED_BUILTIN, LOW); // turn the LED off
  vTaskDelay (600);  // wait for 2 seconds non blocking
  }
}