avoid instantiating an unused configured or default driver

Author: JosiCoder

Raspberry.IO.GeneralPurpose/GpioConnectionSettings.cs

@@ -27,14 +27,23 @@ public class GpioConnectionSettings
         /// <summary>
         /// Initializes a new instance of the <see cref="GpioConnectionSettings"/> class.
         /// </summary>
-        public GpioConnectionSettings()
+        /// <param name="driver">The driver to use.</param>
+        public GpioConnectionSettings(IGpioConnectionDriver driver)
         {
-            Driver = DefaultDriver;
+            Driver = driver;
             BlinkDuration = DefaultBlinkDuration;
             PollInterval = DefaultPollInterval;
             Opened = true;
         }
 
+        /// <summary>
+        /// Initializes a new instance of the <see cref="GpioConnectionSettings"/> class
+        /// using the configured or default driver.
+        /// </summary>
+        public GpioConnectionSettings()
+            : this(DefaultDriver)
+        {}
+
         #endregion
 
         #region Constants

Tests/Test.Gpio.Chaser/Program.cs

@@ -83,7 +83,7 @@ static void Main(string[] args)
                                      });
 
             // Create connection
-            var settings = new GpioConnectionSettings {Driver = driver};
+            var settings = new GpioConnectionSettings (driver);
 
             using (var connection = new GpioConnection(settings, leds))
             {