My use-case is detecting whether my Bluetooth headphones or iPhone are in range of my Mac, to trigger security setting changes (e.g. I need a command that performs an active scan so I can poll to see if my device is nearby, not one that lists previously paired devices. if (Serial.I want to list all in-range Bluetooth devices, ideally with hostnames, but MAC addresses would be sufficient. If there are, send that information via Bluetooth to the connected device. In the first if statement, we check if there are bytes being received in the serial port. In the loop(), send and receive data via Bluetooth Serial. SerialBT.begin("ESP32test") //Bluetooth device name loop() By default it’s called ESP32test but you can rename it and give it a unique name. Initialize the Bluetooth serial device and pass as an argument the Bluetooth Device name. In the setup() initialize a serial communication at a baud rate of 115200. Then, create an instance of BluetoothSerial called SerialBT: BluetoothSerial SerialBT setup()
#if !defined(CONFIG_BT_ENABLED) || !defined(CONFIG_BLUEDROID_ENABLED) The next three lines check if Bluetooth is properly enabled. The code starts by including the BluetoothSerial library. This code establishes a two-way serial Bluetooth communication between two devices. Serial.println("The device started, now you can pair it with bluetooth!") SerialBT.begin("ESP32test") //Bluetooth device name #error Bluetooth is not enabled! Please run `make menuconfig` to and enable it and also demonstrate that SerialBT have the same functionalities of a normal Serial This example creates a bridge between Serial and Classical Bluetooth (SPP) This example code is in the Public Domain (or CC0 licensed, at your option.) Open your Arduino IDE, and go to File > Examples > BluetoothSerial > SerialtoSerialBT. Mac and Linux: instructions – ESP32 Board in Arduino IDE.Windows: instructions – ESP32 Board in Arduino IDE.We’ll program the ESP32 using Arduino IDE, so make sure you have the ESP32 add-on installed before proceeding:
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