advertise ble server

src/main.cpp

@@ -9,10 +9,27 @@
 #define BLINKRATE 1000
 #define BLE_SERVER_NAME "Software Release"
 
-long lastBlink = 0;
+unsigned long lastBlink = 0;
 
 BLEServer* pServer = NULL;
 
+bool deviceConnected = false;
+
+class ServerCallbacks : public BLEServerCallbacks {
+    void onConnect(BLEServer* pServer) override {
+        deviceConnected = true;
+    }
+
+    void onDisconnect(BLEServer* pServer) override {
+        deviceConnected = false;
+        pServer->startAdvertising();
+    }
+
+    void onMtuChanged(BLEServer* pServer, esp_ble_gatts_cb_param_t* param) override {
+        Serial.print("MTU is now: ");
+        Serial.println(param->mtu.mtu);
+    }
+};
 
 void setup() {
     Serial.begin(115200);
@@ -21,8 +38,17 @@ void setup() {
     BLEDevice::init(BLE_SERVER_NAME);
     
     pServer = BLEDevice::createServer();
+    pServer->setCallbacks(new ServerCallbacks());
 
     BLEota.begin(pServer);
+
+    BLEAdvertising* pAdvertising = BLEDevice::getAdvertising();
+    pAdvertising->setScanResponse(true);
+    pAdvertising->setMinPreferred(0x06);
+    pAdvertising->setMinPreferred(0x12);
+    BLEDevice::startAdvertising();
+    BLEDevice::setMTU(128);
+
     delay(1000);
     Serial.println("Started!");
 }
@@ -31,5 +57,6 @@ void loop() {
     if ((millis() - lastBlink) > BLINKRATE) {
         Serial.println(digitalRead(LED));
         digitalWrite(LED, !digitalRead(LED));
+        lastBlink= millis();
     }
 }