DFRobot FireBeetle ESP32-E Manual page 19

//This example code is in the Public Domain (or CC0 licensed, at your option.)
//By Victor Tchistiak - 2019
//
//This example demostrates master mode bluetooth connection and pin
//it creates a bridge between Serial and Classical Bluetooth (SPP)
//this is an extention of the SerialToSerialBT example by Evandro Copercini - 2018
//
#include "BluetoothSerial.h"
BluetoothSerial SerialBT;
String MACadd = "AA:BB:CC:11:22:33";
uint8_t address[6] = {0xAA, 0xBB, 0xCC, 0x11, 0x22, 0x33};
//uint8_t address[6] = {0x00, 0x1D, 0xA5, 0x02, 0xC3, 0x22};
String name = "ESP32test";
char *pin = "1234"; //<- standard pin would be provided by default
bool connected;
void setup() {
Serial.begin(115200);
//SerialBT.setPin(pin);
SerialBT.begin("ESP32master", true);
//SerialBT.setPin(pin);
Serial.println("The device started in master mode, make sure remote BT device is on!");
// connect(address) is fast (upto 10 secs max), connect(name) is slow (upto 30 secs max) as it needs
// to resolve name to address first, but it allows to connect to different devices with the same name.
// Set CoreDebugLevel to Info to view devices bluetooth address and device names
connected = SerialBT.connect(name);
//connected = SerialBT.connect(address);