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

BluetoothSerial SerialBT;

void setup() {
  Serial.begin(115200);
  SerialBT.begin("ESP32_LED_Control"); //Bluetooth device name
  Serial.println("The device started, now you can pair it with bluetooth!");
}

void loop()
{
  while (SerialBT.available()) // Read until the bluetooth client is sending.
  {
    char string = SerialBT.read();
    recv = recv + string;
    delay(1);
    
  }
}