Added NightAlert project for travel kit

NightScout/RaspberryPIButtonSource.cs

@@ -0,0 +1,105 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using NightScout.Interfaces;
+using Raspberry.IO.GeneralPurpose;
+using Raspberry.IO.GeneralPurpose.Behaviors;
+
+namespace NightScout
+{
+    public class RaspberryPIButtonSource : IRaspberryPiButtonSource, IAlerter
+    {
+        public event Action<bool> ButtonStateChange;
+
+        protected IGpioConnectionDriver PinDriver;
+        protected GpioOutputBinaryPin ButtonLEDPin;
+        
+        private static readonly object ledLock = new object();
+
+        public RaspberryPIButtonSource(Int32 pinNumber)
+            : this(pinNumber, new FileGpioConnectionDriver())
+        { }
+
+        public RaspberryPIButtonSource(Int32 pinNumber, IGpioConnectionDriver driver)
+        {
+            //Attempt to monitor the pin
+            //pinConfiguration = ConnectorPin.P1Pin11.Input().Name("Switch");
+            //pinConfiguration.Reversed = true;
+            //pinConfiguration.OnStatusChanged(PinChangeHandler);
+
+
+            //if(pinConfiguration == null)
+            //    Console.WriteLine("null");
+            //PinDriver = new FileGpioConnectionDriver();
+            PinDriver = driver;
+            //var settings = new GpioConnectionSettings { Driver = pinConnectionDriver };
+
+            Console.WriteLine("Making new GPIO connection");
+            //pinConnection = new GpioConnection(settings,pinConfiguration);
+            //pinConnectionDriver.Allocate(ProcessorPin.Pin17, PinDirection.Input);
+            //var pinDriver = pinConnectionDriver.In(ConnectorPin.P1Pin11);
+            var buttonPin = PinDriver.In(ConnectorPin.P1Pin16);
+            ButtonLEDPin = PinDriver.Out(ConnectorPin.P1Pin22);
+
+            Task.Factory.StartNew(() =>
+            {
+                Boolean savedState = false;
+                while (true)
+                {
+                    //Pin 11 is inverse (always high unless button is pressed)
+                    Boolean state = !(buttonPin.Read());
+                    if (savedState != state)
+                    {
+                        PinChangeHandler(state);
+                        savedState = state;
+                    }
+                    Thread.Sleep(100);
+                }
+            });
+            //Console.WriteLine("Made");
+            //pinConnection.PinStatusChanged += pinConnection_PinStatusChanged;
+        }
+
+        private void PinChangeHandler(Boolean state)
+        {
+            if (ButtonStateChange != null)
+                ButtonStateChange(state);
+        }
+
+
+        public void StartAlert()
+        {
+            lock (ledLock)
+            {
+                ButtonLEDPin.Write(true);
+            }
+        }
+
+        public void StartUrgentAlert()
+        {
+            lock (ledLock)
+            {
+                ButtonLEDPin.Write(true);
+            }
+        }
+
+        public void StartStaleDataAlert()
+        {
+            lock (ledLock)
+            {
+                ButtonLEDPin.Write(true);
+            }
+        }
+
+        public void StopAlerts()
+        {
+            lock (ledLock)
+            {
+                ButtonLEDPin.Write(false);
+            }
+        }
+    }
+}