#include <Arduino_FreeRTOS.h>
#include "semphr.h"
#define  LED  13
#define  LED  12
#define  LED  11

SemaphoreHandle_t xBinarySemaphore;

void setup(){
  Serial.begin(9600);
  pinMode(13 ,OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(11, OUTPUT);
  
  xBinarySemaphore = xSemaphoreCreateBinary();
  xTaskCreate(LedOnTask, "LedON",100,NULL,1,NULL);
  xTaskCreate(LedoffTask, "LedOFF", 100,NULL,2,NULL);
  xTaskCreate(LedOnTask, "LedON", 100,NULL,1,NULL);
  xTaskCreate(LedoffTask, "LedOFF", 100,NULL,2,NULL);
  xTaskCreate(LedOnTask, "LedOFF", 100,NULL,1,NULL);
  xTaskCreate(LedoffTask, "LedOFF", 100,NULL,2,NULL);
  
 
  xSemaphoreGive(xBinarySemaphore);}

void loop()
{}

void LedOnTask(void *pvParameters){
  while(1)
  {
   xSemaphoreTake(xBinarySemaphore,portMAX_DELAY);
   Serial.println("Task1 executed");
   digitalWrite(13 ,LOW);
   digitalWrite(12, HIGH);
   digitalWrite(11, LOW);
   
   xSemaphoreGive(xBinarySemaphore);
   vTaskDelay(100);
  }}
 
  void LedoffTask(void *pvParameters){
  while(1)
  {
    xSemaphoreTake(xBinarySemaphore,portMAX_DELAY);
    Serial.println("Task2 executed");
    digitalWrite(13 ,HIGH);
    digitalWrite(12, LOW);
    digitalWrite(11, HIGH);
    
    xSemaphoreGive(xBinarySemaphore);
    vTaskDelay(50);
  }}