first commit

Software/CSharp/GrovePi/Sensors/PIRMotionSensor.cs

@@ -0,0 +1,28 @@
+namespace GrovePi.Sensors
+{
+    public interface IPIRMotionSensor
+    {
+        bool IsPeopleDetected();
+    }
+
+    internal class PIRMotionSensor:Sensor<IPIRMotionSensor>, IPIRMotionSensor
+    {
+        public PIRMotionSensor(GrovePi device, Pin pin):base(device, pin, PinMode.Input)
+        {
+
+        }
+
+        public bool IsPeopleDetected()
+        {
+            int sensorValue = Device.DigitalRead(Pin);
+            if (sensorValue == 0)
+            {
+                return false;
+            }
+            else
+            {
+                return true;
+            }
+        }
+    }
+}