`ble-beacon.ino`

PaperDIY Assembly Kit · File : ble-beacon.ino · Language : C++ (Arduino) · Use case : Diffuser un signal Bluetooth Low Energy (BLE) comme un beacon.

Configures the ESP32-S3 as a BLE server broadcasting a custom service.

Uses the native BLEDevice library. Ideal for low-power short-range communication. The PCB antenna handles BLE 5.0 signal. Use a BLE scanner app to test.

ble-beacon.ino

#include <BLEDevice.h>
#include <BLEUtils.h>
#include <BLEServer.h>

#define SERVICE_UUID        "4fafc201-1fb5-459e-8fcc-c5c9c331914b"
#define CHARACTERISTIC_UUID "beb5483e-36e1-4688-b7f5-ea07361b26a8"

void setup() {
  Serial.begin(115200);
  Serial.println("Starting BLE work!");

  BLEDevice::init("PaperDIY_Beacon");
  BLEServer *pServer = BLEDevice::createServer();
  BLEService *pService = pServer->createService(SERVICE_UUID);
  BLECharacteristic *pCharacteristic = pService->createCharacteristic(
                                         CHARACTERISTIC_UUID,
                                         BLECharacteristic::PROPERTY_READ |
                                         BLECharacteristic::PROPERTY_WRITE |
                                         BLECharacteristic::PROPERTY_NOTIFY |
                                         BLECharacteristic::PROPERTY_INDICATE
                                       );
  pCharacteristic->setValue("Hello World");
  pService->start();

  BLEAdvertising *pAdvertising = BLEDevice::getAdvertising();
  pAdvertising->addServiceUUID(SERVICE_UUID);
  pAdvertising->setScanResponse(true);
  pAdvertising->setMinPreferred(0x06);
  BLEDevice::startAdvertising();
  Serial.println("Characteristic created and advertising started");
}

void loop() {
  delay(1000);
}

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