Basic BLE server

ble-server.cpp

+#include <Arduino.h>
+#include <BLEDevice.h>
+#include <BLEUtils.h>
+#include <BLEServer.h>
+
+// See the following for generating UUIDs:
+// https://www.uuidgenerator.net/
+
+#define SERVICE_UUID        "61a7f44e-5a29-4b16-a219-3dfd49d28ebc"
+#define CHARACTERISTIC_UUID1 "beb5483e-36e1-4688-b7f5-ea07361b26a8"
+#define CHARACTERISTIC_UUID2 "717740b7-02f8-4e5e-a236-2ec94d303934"
+#define CHARACTERISTIC_UUID3 "77e846fd-d2bd-4ea1-b2ef-639bac74bac8"
+
+void setup() {
+  Serial.begin(115200);
+  Serial.println("Program started");
+
+  BLEDevice::init("ExampleBluetoothServer");
+  BLEServer *server = BLEDevice::createServer();
+  BLEService *testService = server->createService(SERVICE_UUID);
+  BLECharacteristic *accelerometerCharX = testService->createCharacteristic(
+                                         CHARACTERISTIC_UUID1,
+                                         BLECharacteristic::PROPERTY_READ |
+                                         BLECharacteristic::PROPERTY_WRITE
+                                       );
+  BLECharacteristic *accelerometerCharY = testService->createCharacteristic(
+                                         CHARACTERISTIC_UUID2,
+                                         BLECharacteristic::PROPERTY_READ |
+                                         BLECharacteristic::PROPERTY_WRITE
+                                       );
+  BLECharacteristic *accelerometerCharZ = testService->createCharacteristic(
+                                         CHARACTERISTIC_UUID3,
+                                         BLECharacteristic::PROPERTY_READ |
+                                         BLECharacteristic::PROPERTY_WRITE
+                                       );
+
+  accelerometerCharX->setValue("Accelerometer value X");
+  accelerometerCharY->setValue("Accelerometer value Y");
+  accelerometerCharZ->setValue("Accelerometer value Z");
+  testService->start();
+
+  //Set up broadcasting
+  BLEAdvertising *pAdvertising = BLEDevice::getAdvertising();
+  pAdvertising->addServiceUUID(SERVICE_UUID);
+  pAdvertising->setScanResponse(true);
+  pAdvertising->setMinPreferred(0x08); 
+  pAdvertising->setMinPreferred(0x16);
+  BLEDevice::startAdvertising();
+  Serial.println("GATT server set up");
+}
+
+void loop() {
+  // put your main code here, to run repeatedly:
+  delay(2000);
+}