Merge pull request #9 from TKJElectronics/master

Added ArduinoBlinkLED ADK Example

examples/adk/ArduinoBlinkLED/ArduinoBlinkLED.ino

@@ -0,0 +1,46 @@
+// The source for the Android application can be found at the following link: http://www.tkjelectronics.dk/uploads/ArduinoBlinkLED.zip
+// The code for the Android application is heavily based on this guide: http://allaboutee.com/2011/12/31/arduino-adk-board-blink-an-led-with-your-phone-code-and-explanation/ by Miguel
+
+#include <Usb.h>
+#include <adk.h>
+
+USB Usb;
+ADK adk(&Usb,"TKJElectronics", // Manufacturer Name
+             "ArduinoBlinkLED", // Model Name
+             "Example sketch for the USB Host Shield", // Description (user-visible string)
+             "1.0", // Version
+             "http://www.tkjelectronics.dk/uploads/ArduinoBlinkLED.apk", // URL (web page to visit if no installed apps support the accessory)
+             "123456789"); // Serial Number (optional)
+
+#define LED_RED 13 // Pin 13 is occupied by the SCK pin on a normal Arduino (Uno, Duemilanove etc.), so use a different pin
+
+void setup()
+{
+  Serial.begin(115200);
+  Serial.print("\r\nADK demo start");
+  if (Usb.Init() == -1) {
+    Serial.print("\r\nOSCOKIRQ failed to assert");
+    while(1); //halt
+  }
+  pinMode(LED_RED, OUTPUT);
+}
+
+void loop()
+{    
+  Usb.Task();
+  if(adk.isReady()) {
+    uint8_t msg[1];
+    uint16_t len = sizeof(msg);
+    uint8_t rcode = adk.RcvData(&len, msg);
+    if(rcode && rcode != hrNAK)
+      USBTRACE2("Data rcv. :", rcode);
+    if(len > 0) {
+      Serial.print(F("\r\nData Packet: "));
+      Serial.print(msg[0]);
+      digitalWrite(LED_RED,msg[0] ? HIGH : LOW);
+    }
+  } 
+  else
+    digitalWrite(LED_RED, LOW);  
+  delay(10);       
+}