added arduino, modified build

arduino/libraries/Esplora/examples/Beginners/EsploraMusic/EsploraMusic.ino

@@ -0,0 +1,53 @@
+/*
+  Esplora Music
+
+  This sketch turns the Esplora in a simple musical instrument.
+  Press the Switch 1 and move the slider to see how it works.
+
+  Created on 22 november 2012
+  By Enrico Gueli <enrico.gueli@gmail.com>
+  modified 22 Dec 2012
+  by Tom Igoe
+*/
+
+
+#include <Esplora.h>
+
+// these are the frequencies for the notes from middle C
+// to one octave above middle C:
+const int note[] = {
+  262, // C
+  277, // C#
+  294, // D
+  311, // D#
+  330, // E
+  349, // F
+  370, // F#
+  392, // G
+  415, // G#
+  440, // A
+  466, // A#
+  494, // B
+  523  // C next octave
+};
+
+void setup() {
+}
+
+void loop() {
+  // read the button labeled SWITCH_DOWN. If it's low,
+  // then play a note:
+  if (Esplora.readButton(SWITCH_DOWN) == LOW) {
+    int slider = Esplora.readSlider();
+
+    // use map() to map the slider's range to the
+    // range of notes you have:
+    byte thisNote = map(slider, 0, 1023, 0, 13);
+    // play the note corresponding to the slider's position:
+    Esplora.tone(note[thisNote]);
+  }
+  else {
+    // if the button isn't pressed, turn the note off:
+    Esplora.noTone();
+  }
+}