UV sensor example added

Author: henrikekblad

libraries/MySensors/examples/UVSensor/UVSensor.ino

@@ -0,0 +1,64 @@
+/*
+  Vera Arduino UVM-30A
+
+  connect the sensor as follows :
+
+  +   >>> 5V
+  -   >>> GND
+  out >>> A0     
+  
+  Contribution: epierre, bulldoglowell
+  Cobverted to 1.4 by Henrik Ekblad
+
+  License: Attribution-NonCommercial-ShareAlike 3.0 Unported (CC BY-NC-SA 3.0)
+ 
+*/
+
+#include <MySensor.h>  
+#include <SPI.h>
+
+#define CHILD_ID_UV 0
+#define UV_SENSOR_ANALOG_PIN 0
+unsigned long SLEEP_TIME = 30*1000; // Sleep time between reads (in milliseconds)
+
+MySensor gw;
+MyMessage uvMsg(CHILD_ID_UV, V_UV);
+int lastUV = -1;
+int uvIndexValue [13] = { 50, 227, 318, 408, 503, 606, 696, 795, 881, 976, 1079, 1170, 3000};
+int uvIndex;
+
+void setup()  
+{ 
+  gw.begin();
+
+  // Send the sketch version information to the gateway and Controller
+  gw.sendSketchInfo("UV Sensor", "1.1");
+
+  // Register all sensors to gateway (they will be created as child devices)
+  gw.present(CHILD_ID_UV, S_UV);
+
+}
+
+void loop()      
+{     
+  uint16_t uv = analogRead(0);// Get UV value
+  Serial.print("Uv reading: ");
+  Serial.println(uv);
+  for (int i = 0; i < 13; i++)
+  {
+    if (uv <= uvIndexValue[i]) 
+    {
+      uvIndex = i;
+      break;
+    }
+  }
+  Serial.print("Uv index: ");
+  Serial.println(uvIndex);
+
+  if (uvIndex != lastUV) {
+      gw.send(uvMsg.set(uvIndex));
+      lastUV = uvIndex;
+  }
+  
+  gw.sleep(SLEEP_TIME);
+}