From 87ebd4bc76c85cd0f954b0e39c2e2757abff6b48 Mon Sep 17 00:00:00 2001
From: James Barnett <james.barnett@fivium.co.uk>
Date: Tue, 29 Aug 2017 12:21:38 +0100
Subject: Add CPU utilisaiton indicator mode

---
 NucLedController/CPUUsageIndicatorControlMode.cs | 68 ++++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 NucLedController/CPUUsageIndicatorControlMode.cs

(limited to 'NucLedController/CPUUsageIndicatorControlMode.cs')

diff --git a/NucLedController/CPUUsageIndicatorControlMode.cs b/NucLedController/CPUUsageIndicatorControlMode.cs
new file mode 100644
index 0000000..5d62339
--- /dev/null
+++ b/NucLedController/CPUUsageIndicatorControlMode.cs
@@ -0,0 +1,68 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Timers;
+
+namespace NucLedController
+{
+    class CPUUsageIndicatorControlMode : IControlMode
+    {
+
+        private readonly Timer timer;
+        private readonly PerformanceCounter perfCounter;
+        private LEDColour currentColour;
+
+        public CPUUsageIndicatorControlMode(int intervalMs)
+        {
+            timer = new Timer();
+            timer.Elapsed += new ElapsedEventHandler(Tick);
+            timer.Interval = intervalMs;
+
+            perfCounter = new PerformanceCounter("Processor", "% Processor Time", "_Total");
+            currentColour = LEDColour.getLEDColour("WHITE");
+        }
+
+        private void Tick(object source, ElapsedEventArgs e)
+        {
+            float cpuUtilisation = perfCounter.NextValue();
+
+            LEDColour targetColour = mapUsageToColour(cpuUtilisation);
+            if(currentColour != targetColour)
+            {
+                LEDController.SetLEDState(LEDTransition.getLEDTransition("ALWAYS_ON"), targetColour);
+                currentColour = targetColour;
+            }
+
+        }
+
+        // TODO add option to map usage to brighness
+        private LEDColour mapUsageToColour(float utilisation)
+        {
+            if(utilisation <= 33)
+            {
+                return LEDColour.getLEDColour("GREEN");
+            }
+            else if (utilisation > 66)
+            {
+                return LEDColour.getLEDColour("RED");
+            }
+            else
+            {
+                return LEDColour.getLEDColour("YELLOW");
+            }
+        }
+
+        public void Start()
+        {
+            timer.Start();
+        }
+
+        public void Stop()
+        {
+            timer.Start();
+        }
+    }
+}
-- 
cgit v1.2.3