#include "BluetoothSerial.h"
#include <DHT.h>
#if !defined(CONFIG_BT_ENABLED) || !defined(CONFIG_BLUEDROID_ENABLED)
#error Bluetooth is not enabled! Please run `make menuconfig` to and enable it
#endif

#define DHTPIN 4
#define DHTTYPE DHT11

DHT dht(DHTPIN, DHTTYPE);

BluetoothSerial SerialBT;

void setup() {
  Serial.begin(115200);
  SerialBT.begin("ESP32_BLE_Temperature_Humidity");
  dht.begin();

  Serial.println("The device started, now you can pair it with bluetooth!");
}

void loop()
{
  float humidity = dht.readHumidity();
  float temperature = dht.readTemperature();

  if (SerialBT.available()) {
    char command = SerialBT.read();
    if (command == 'T' || command == 't') { // Yêu cầu nhiệt độ
      if (!isnan(temperature)) {
        SerialBT.print("Temperature: ");
        SerialBT.print(temperature);
        SerialBT.println(" °C");
      } else {
        SerialBT.println("Failed to read temperature!");
      }
    } else if (command == 'H' || command == 'h') { // Yêu cầu độ ẩm
      if (!isnan(humidity)) {
        SerialBT.print("Humidity: ");
        SerialBT.print(humidity);
        SerialBT.println(" %");
      } else {
        SerialBT.println("Failed to read humidity!");
      }
    }
  }
  delay(2000);
}