Static field objects are now created on constructor.

source/Windows.Devices.Gpio/GpioController.cs

@@ -15,7 +15,7 @@ public sealed class Gpio​Controller : IGpioController
     {
         // this is used as the lock object 
         // a lock is required because multiple threads can access the I2C controller
-        readonly static object _syncLock = new object();
+        static object _syncLock;
 
         // we can have only one instance of the GpioController
         // need to do a lazy initialization of this field to make sure it exists when called elsewhere.
@@ -56,6 +56,11 @@ public extern int PinCount
         {
             if (s_instance == null)
             {
+                if (_syncLock == null)
+                {
+                    _syncLock = new object();
+                }
+
                 lock (_syncLock)
                 {
                     if (s_instance == null)

source/Windows.Devices.Gpio/GpioPin.cs

@@ -20,11 +20,11 @@ public delegate void GpioPinValueChangedEventHandler(
     /// </summary>
     public sealed class Gpio​Pin : IGpioPin, IDisposable
     {
-        private static GpioPinEventListener s_eventListener = new GpioPinEventListener();
+        private static GpioPinEventListener s_eventListener;
 
         // this is used as the lock object 
         // a lock is required because multiple threads can access the GpioPin
-        private object _syncLock = new object();
+        private object _syncLock;
 
         private readonly int _pinNumber;
         private GpioPinDriveMode _driveMode = GpioPinDriveMode.Input;
@@ -40,6 +40,9 @@ public sealed class Gpio​Pin : IGpioPin, IDisposable
         internal Gpio​Pin(int pinNumber)
         {
             _pinNumber = pinNumber;
+
+            s_eventListener = new GpioPinEventListener();
+            _syncLock = new object();
         }
 
         internal bool Init()