Attempts to connect to an already paired device before scanning (#3)

* feat: lowered macOS project target to 10.12

* feat: tries to find an already paired Anne Pro before scanning

Author: fcoury

AnnePro.xcodeproj/project.pbxproj

@@ -253,7 +253,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				MACOSX_DEPLOYMENT_TARGET = 10.13;
+				MACOSX_DEPLOYMENT_TARGET = 10.12;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = macosx;
@@ -304,7 +304,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				MACOSX_DEPLOYMENT_TARGET = 10.13;
+				MACOSX_DEPLOYMENT_TARGET = 10.12;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = macosx;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";

AnnePro/BluetoothController.swift

@@ -87,7 +87,22 @@ class BluetoothController: NSObject, CBCentralManagerDelegate, CBPeripheralDeleg
         if central.state == .poweredOn {
             print("Bluetooth available!")
             delegate?.updateStatus(status: .SCANNING)
-            central.scanForPeripherals(withServices: nil, options: nil)
+            print("Searching for a connected Anne Pro")
+            let peripherals = self.centralManager.retrieveConnectedPeripherals(withServices: [ANNE_PRO_SERVICE_UUID])
+            if (peripherals.count > 0) {
+                let peripheral = peripherals[0];
+                print("Found", peripherals.count, "matching peripherals", peripheral)
+                self.centralManager.stopScan()
+                
+                self.peripheral = peripheral
+                self.peripheral.delegate = self
+                
+                delegate?.updateStatus(status: .CONNECTING)
+                self.centralManager.connect(peripheral, options: nil)
+            } else {
+                print("No paired peripherals found, scanning...")
+                central.scanForPeripherals(withServices: nil, options: nil)
+            }
         } else {
             print("Bluetooth not available.")
             delegate?.updateStatus(status: .DISCONNECTED)