Added some non-working code to the example app, with the API calls that will be used once the library is built.

examples/Connection/ble_connection.ino

@@ -0,0 +1,79 @@
+// @author James Hudson bugs.feedback.whatever@gmail.com
+// @todo license text and header - please see github project for license
+
+// You will need to add these hardware buttons
+#define BUTTON_A    4 // left button
+#define BUTTON_B    7 // center switch
+#define BUTTON_C    5 // right button
+
+
+BLENotifications notifications;;
+
+void setup() {
+  // Button configuration
+  pinMode(BUTTON_A, INPUT_PULLUP);
+  pinMode(BUTTON_B, INPUT_PULLUP);
+  pinMode(BUTTON_C, INPUT_PULLUP);
+
+    Serial.begin(115200);
+    while(!Serial) {
+        delay(10);
+    }
+
+    Serial.println("BLENotifications BLE ANCS on ESP32 Example");
+    Serial.println("------------------------------------------");    
+
+    notifications.begin()
+    notifications.setName("deviceName");
+    notifications.setConnectCallback(connect_callback);
+    notifications.setDisconnectCallback(disconnect_callback);
+    notifications.setNotificationCallback(notification_callback);
+}
+
+void notification_callback(AncsNotification_t* notif)
+{
+    Serial.println("Got notifications");
+}
+
+
+/**
+ * Callback invoked when a BLE connection is made.
+ */
+void connect_callback(uint16_t conn_handle)
+{
+}
+
+
+/**
+ * Callback invoked when a connection is dropped
+ * @param conn_handle
+ * @param reason is a BLE_HCI_STATUS_CODE which can be found in ble_hci.h
+ */
+void disconnect_callback(uint16_t conn_handle, uint8_t reason)
+{
+  (void) reason;
+
+  Serial.println();
+  Serial.print("Disconnected, reason = 0x"); Serial.println(reason, HEX);
+}
+
+
+void loop() {
+    if (BLENotifications.numPending == 0) {
+        return;
+    }
+
+    checkButtons();
+
+    notifications.actionPositive();
+    notifications.actionNegative();
+}
+
+/*
+X- Connect/Disconnect 
+X- Set Name of Peripheral
+X- Notification added 
+- Notification removed
+- Notification Attributes
+- Perform Notification Actions (positive or negative)
+*/