49 lines
1.9 KiB
C++
49 lines
1.9 KiB
C++
// This example demonstrates usage of BluetoothSerial method to retrieve MAC address of local BT device in various formats.
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// By Tomas Pilny - 2023
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#include "BluetoothSerial.h"
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String device_name = "ESP32-example";
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#if !defined(CONFIG_BT_ENABLED) || !defined(CONFIG_BLUEDROID_ENABLED)
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#error Bluetooth is not enabled! Please run `make menuconfig` to and enable it
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#endif
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#if !defined(CONFIG_BT_SPP_ENABLED)
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#error Serial Bluetooth not available or not enabled. It is only available for the ESP32 chip.
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#endif
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BluetoothSerial SerialBT;
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void setup() {
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Serial.begin(115200);
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SerialBT.begin(device_name); //Bluetooth device name
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uint8_t mac_arr[6]; // Byte array to hold the MAC address from getBtAddress()
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BTAddress mac_obj; // Object holding instance of BTAddress with the MAC (for more details see libraries/BluetoothSerial/src/BTAddress.h)
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String mac_str; // String holding the text version of MAC in format AA:BB:CC:DD:EE:FF
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SerialBT.getBtAddress(mac_arr); // Fill in the array
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mac_obj = SerialBT.getBtAddressObject(); // Instantiate the object
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mac_str = SerialBT.getBtAddressString(); // Copy the string
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Serial.print("This device is instantiated with name ");
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Serial.println(device_name);
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Serial.print("The mac address using byte array: ");
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for (int i = 0; i < ESP_BD_ADDR_LEN - 1; i++) {
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Serial.print(mac_arr[i], HEX);
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Serial.print(":");
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}
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Serial.println(mac_arr[ESP_BD_ADDR_LEN - 1], HEX);
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Serial.print("The mac address using BTAddress object using default method `toString()`: ");
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Serial.println(mac_obj.toString().c_str());
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Serial.print("The mac address using BTAddress object using method `toString(true)`\n\twhich prints the MAC with capital letters: ");
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Serial.println(mac_obj.toString(true).c_str()); // This actually what is used inside the getBtAddressString()
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Serial.print("The mac address using string: ");
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Serial.println(mac_str.c_str());
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}
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void loop() {}
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