#if CONFIG_FREERTOS_UNICORE
#define ARDUINO_RUNNING_CORE 0
#else
#define ARDUINO_RUNNING_CORE 1
#endif

#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);

#ifndef LED_BUILTIN
#define LED_BUILTIN 16
#endif

const int buttonPin = 4;
volatile bool led1State = false; 
volatile bool led2State = false; 
volatile bool buttonPressed = false;

void TaskBlink1(void *pvParameters);
void TaskBlink2(void *pvParameters);
void TaskButton(void *pvParameters);

void setup() {
  Serial.begin(115200);
  lcd.init();
  lcd.backlight(); 

  pinMode(19, OUTPUT); // LED 1
  pinMode(18, OUTPUT); // LED 2
  pinMode(buttonPin, INPUT_PULLUP);

 
  xTaskCreatePinnedToCore(TaskBlink1, "TaskBlink1", 1024, NULL, 2, NULL, ARDUINO_RUNNING_CORE);
  xTaskCreatePinnedToCore(TaskBlink2, "TaskBlink2", 1024, NULL, 1, NULL, ARDUINO_RUNNING_CORE);
  xTaskCreatePinnedToCore(TaskButton, "TaskButton", 1024, NULL, 3, NULL, ARDUINO_RUNNING_CORE);
}

void loop() {
 
  lcd.setCursor(0, 0);
  lcd.print("LED 1: ");
  lcd.print(led1State ? "ON " : "OFF");
  
  lcd.setCursor(0, 1);
  lcd.print("LED 2: ");
  lcd.print(led2State ? "ON " : "OFF");

  vTaskDelay(500 / portTICK_PERIOD_MS);
}

void TaskBlink1(void *pvParameters) {
  (void) pvParameters;

  for (;;) {
    if (buttonPressed) {
 
      digitalWrite(19, HIGH);
      led1State = true;
      led2State = false;
      digitalWrite(18, LOW);
      buttonPressed = false; 
    } else {
   
      digitalWrite(19, led1State ? HIGH : LOW);
    }
    vTaskDelay(200 / portTICK_PERIOD_MS);
  }
}

void TaskBlink2(void *pvParameters) {
  (void) pvParameters;

  for (;;) {
    if (buttonPressed) {
      
      digitalWrite(18, HIGH);
      led2State = true;
      led1State = false;
      digitalWrite(19, LOW);
      buttonPressed = false;
    } else {
      
      digitalWrite(18, led2State ? HIGH : LOW);
    }
    vTaskDelay(250 / portTICK_PERIOD_MS);
  }
}

void TaskButton(void *pvParameters) {
  (void) pvParameters;

  for (;;) {
    
    if (digitalRead(buttonPin) == LOW) {
      buttonPressed = true;
      Serial.println("Button pressed"); 
      vTaskDelay(200 / portTICK_PERIOD_MS);
    }
    vTaskDelay(50 / portTICK_PERIOD_MS); 
  }
}