#include <LiquidCrystal_I2C.h>
#include <freertos/FreeRTOS.h>
#include <freertos/task.h>

void BatLed1(void *pvParameters);
void BaTLed2(void *pvParameters);
void ButtonTask(void *pvParameters);

#define Led1_PIN 16
#define Led2_PIN 4
#define BUTTON_PIN 5

LiquidCrystal_I2C lcd(0x27, 16, 2);
bool trangthai = false; // Trạng thái của LED 1 và LED 2

void setup() {
  lcd.init(); 
  lcd.backlight();
  pinMode(Led1_PIN, OUTPUT);
  pinMode(Led2_PIN, OUTPUT);
  pinMode(BUTTON_PIN, INPUT_PULLUP); // Sử dụng INPUT_PULLUP cho nút nhấn

  xTaskCreate(BatLed1, "Blink LED 1", 4096, NULL, 1, NULL);
  xTaskCreate(BaTLed2, "Blink LED 2", 4096, NULL, 1, NULL);
  xTaskCreate(ButtonTask, "Button Task", 4096, NULL, 1, NULL);
}

void loop() {
  
}

void BatLed1(void *pvParameters) {
  for (;;) {
    if (trangthai) {
      digitalWrite(Led1_PIN, HIGH);
      lcd.setCursor(0, 0);  
      lcd.print("Led 1: Bat   "); 
    } else {
      digitalWrite(Led1_PIN, LOW); 
      lcd.setCursor(0, 0);
      lcd.print("Led 1: Tat   "); 
    }
    vTaskDelay(100 / portTICK_PERIOD_MS); 
  }
}

void BaTLed2(void *pvParameters) {
  for (;;) {
    if (!trangthai) {
      digitalWrite(Led2_PIN, HIGH);
      lcd.setCursor(0, 1);  
      lcd.print("Led 2: Bat   "); 
    } else {
      digitalWrite(Led2_PIN, LOW); 
      lcd.setCursor(0, 1);
      lcd.print("Led 2: Tat   "); 
    }
    vTaskDelay(100 / portTICK_PERIOD_MS); 
  }
}

void ButtonTask(void *pvParameters) {
  for (;;) {
    static bool lastButtonState = HIGH; 
    bool currentButtonState = digitalRead(BUTTON_PIN); 

    // Kiểm tra xem nút có được nhấn không
    if (lastButtonState == HIGH && currentButtonState == LOW) { 
      trangthai = !trangthai; 
      vTaskDelay(300 / portTICK_PERIOD_MS); 
    }
    
    lastButtonState = currentButtonState; 
    vTaskDelay(10 / portTICK_PERIOD_MS); 
  }
}