#include <Arduino_FreeRTOS.h>
#include <LiquidCrystal.h>

const int LED0 = 7;      
const int LED1 = 8;      
const int LED2 = 9;      
const int LED3 = 10;     
const int buzzer= 13;
const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);


void setup(){
  lcd.begin(16, 2);
  
  Serial.begin(9600);
  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(LED3, OUTPUT);
  pinMode(LED0, OUTPUT);
  pinMode(buzzer,OUTPUT);
  

  xTaskCreate(Task_1, "Job 1!", 100, NULL, 1, NULL);
  xTaskCreate(Task_2, "Job 2!", 100, NULL, 1, NULL);
  xTaskCreate(Task_3, "Job 3!", 100, NULL, 1, NULL);
  xTaskCreate(Idle_Task, ".......", 100, NULL, 0, NULL);
}


void loop(){}

static void Task_1(void* pvParameters){
  while(1){ 
    digitalWrite(LED0, HIGH);
    digitalWrite(LED1, LOW);  
    digitalWrite(LED2, LOW);
    digitalWrite(LED3, LOW);
    tone(buzzer,300,1100/portTICK_PERIOD_MS);
    Serial.println(F("Job 1!"));
    lcd.setCursor(0, 1);
    lcd.print("Job 1!");
    vTaskDelay(1000/portTICK_PERIOD_MS);
    
  }
}

static void Task_2(void* pvParameters){  
while(1){ 
    digitalWrite(LED0, LOW);
    digitalWrite(LED1, HIGH);  
    digitalWrite(LED2, LOW);
    digitalWrite(LED3, LOW);
    tone(buzzer,400,1200/portTICK_PERIOD_MS);
    Serial.println(F("Job 2!"));
        lcd.setCursor(0, 1);
    lcd.print("Job 2!");
    vTaskDelay(2000/portTICK_PERIOD_MS);
    
  }
}

static void Task_3(void* pvParameters){ 
while(1){ 
    digitalWrite(LED0, LOW);
    digitalWrite(LED1, LOW);  
    digitalWrite(LED2, HIGH);
    digitalWrite(LED3, LOW);
    tone(buzzer,500,1300/portTICK_PERIOD_MS);
    Serial.println(F("Job 3!"));
    lcd.setCursor(0, 1);
    lcd.print("Job 3!");
   vTaskDelay(3000/portTICK_PERIOD_MS);
  
  }
}

static void Idle_Task(void* pvParameters){
  while(1){ 
    digitalWrite(LED0, LOW);
    digitalWrite(LED1, LOW);  
    digitalWrite(LED2, LOW);
    digitalWrite(LED3, HIGH);
    Serial.println(F(".......!"));
    tone(buzzer,600,1400/portTICK_PERIOD_MS);
    lcd.setCursor(0, 1);
    lcd.print("......");
    delay(500);
    lcd.clear();
  }  
}