ESP32 - Bluetooth Programming

ESP32 Bluetooth Programming

Introduction

The ESP32 comes with Wi-Fi, Bluetooth Classic and Bluetooth Low Energy (BLE). In this tutorial, you’ll learn how to use ESP32 Bluetooth Classic with Arduino IDE to exchange data between an ESP32 and an Android smartphone.

Step 1: Connect Board to Laptop

Step 2: ESP32 LED Blink Example Code

Select boar ESP32 DEV Module from Tools >> Boards menu, then select appropriate com port. Upload this program to ESP32.

#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("ESP32test"); //Bluetooth device name

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

}

void loop() {

if (Serial.available()) {

SerialBT.write(Serial.read());

}

if (SerialBT.available()) {

Serial.write(SerialBT.read());

}

delay(20);

}

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