Added Melody

Arduino/__init__.py

@@ -1,5 +1,5 @@
-#!/usr/bin/env python
-
-
-from arduino import Arduino
-
+#!/usr/bin/env python
+
+
+from arduino import Arduino,Shrimp
+

Arduino/arduino.py

@@ -267,6 +267,62 @@ class Arduino(object):
         except:
             return 0
 
+    def Melody(self, pin, melody, durations):
+        """
+        Plays a melody.
+        inputs:
+            pin: digital pin number for playback
+            melody: list of tones
+            durations: list of duration
+        length of melody should be of same
+        length as length of duration
+
+        Melodies of the following lenght, can cause trouble
+        when playing it multiple times.
+            board.Melody(9,["C4","G3","G3","A3","G3",0,"B3","C4"],[4,8,8,4,4,4,4,4])
+        Playing short melodies (1 or 2 tones) didn't cause trouble during testing
+        """
+        NOTES = dict(B0=31,C1=33,CS1=35,D1=37,DS1=39,E1=41,F1=44,FS1=46,G1=49\
+                 ,GS1=52,A1=55,AS1=58,B1=62,C2=65,CS2=69,D2=73,DS2=78,E2=82\
+                 ,F2=87,FS2=93,G2=98,GS2=104,A2=110,AS2=117,B2=123,C3=131\
+                 ,CS3=139,D3=147,DS3=156,E3=165,F3=175,FS3=185,G3=196,GS3=208\
+                 ,A3=220,AS3=233,B3=247,C4=262,CS4=277,D4=294,DS4=311,E4=330\
+                 ,F4=349,FS4=370,G4=392,GS4=415,A4=440,AS4=466,B4=494,C5=523\
+                 ,CS5=554,D5=587,DS5=622,E5=659,F5=698,FS5=740,G5=784,GS5=831\
+                 ,A5=880,AS5=932,B5=988,C6=1047,CS6=1109,D6=1175,DS6=1245,E6=1319\
+                 ,F6=1397,FS6=1480,G6=1568,GS6=1661,A6=1760,AS6=1865,B6=1976,C7=2093\
+                 ,CS7=2217,D7=2349,DS7=2489,E7=2637,F7=2794,FS7=2960,G7=3136\
+                 ,GS7=3322,A7=3520,AS7=3729,B7=3951,C8=4186,CS8=4435,D8=4699,DS8=4978)
+        if (type(melody) == list) and (type(durations) == list):
+            length = len(melody)
+            cmd_str = "@to%"+str(length)+"%"+str(pin)+"%"
+            d = ""
+            if length == len(durations):
+                for note in range(length):
+                    n = NOTES.get(melody[note])
+                    cmd_str = cmd_str+str(n)+"%"
+                for duration in range(len(durations)):
+                    d = str(durations[duration])
+                    cmd_str = cmd_str+d+"%"
+                cmd_str = cmd_str[:-1]+"$!"
+                print cmd_str
+                try:
+                    self.sr.write(cmd_str)
+                    self.sr.flush()
+                except:
+                    pass
+                cmd_str=''.join(["@nto%",str(pin),"$!"])
+                print cmd_str
+                try:
+                    self.sr.write(cmd_str)
+                    self.sr.flush()
+                except:
+                    pass
+            else:
+                return -1
+        else:
+            return -1
+
 ##SDM
 class Shrimp(Arduino):
     def __init__(self):