Upload solution.py

solution.py

+from machine import Pin, PWM
+import time
+
+BUZZER_PIN = 18
+
+# Note to frequency
+note_freq = {
+    'B1': 31,
+    'C2': 33,
+    'CS2': 35,
+    'D2': 37,
+    'DS2': 39,
+    'E2': 41,
+    'F2': 44,
+    'FS2': 46,
+    'G2': 49,
+    'GS2': 52,
+    'A2': 55,
+    'AS2': 58,
+    'B2': 62,
+    'C3': 65,
+    'CS3': 69,
+    'D3': 73,
+    'DS3': 78,
+    'E3': 82,
+    'F3': 87,
+    'FS3': 93,
+    'G3': 98,
+    'GS3': 104,
+    'A3': 110,
+    'AS3': 117,
+    'B3': 123,
+    'C4': 131,
+    'CS4': 139,
+    'D4': 147,
+    'DS4': 156,
+    'E4': 165,
+    'F4': 175,
+    'FS4': 185,
+    'G4': 196,
+    'GS4': 208,
+    'A4': 220,
+    'AS4': 233,
+    'B4': 247,
+    'C5': 262,
+    'CS5': 277,
+    'D5': 294,
+    'DS5': 311,
+    'E5': 330,
+    'F5': 349,
+    'FS5': 370,
+    'G5': 392,
+    'GS5': 415,
+    'A5': 440,
+    'AS5': 466,
+    'B5': 494,
+    'C6': 523,
+    'CS6': 554,
+    'D6': 587,
+    'DS6': 622,
+    'E6': 659,
+    'F6': 698,
+    'FS6': 740,
+    'G6': 784,
+    'GS6': 831,
+    'A6': 880,
+    'AS6': 932,
+    'B6': 988,
+    'C7': 1047,
+    'CS7': 1109,
+    'D7': 1175,
+    'DS7': 1245,
+    'E7': 1319,
+    'F7': 1397,
+    'FS7': 1480,
+    'G7': 1568,
+    'GS7': 1661,
+    'A7': 1760,
+    'AS7': 1865,
+    'B7': 1976,
+    'C8': 2093,
+    'CS8': 2217,
+    'D8': 2349,
+    'DS8': 2489,
+    'E8': 2637,
+    'F8': 2794,
+    'FS8': 2960,
+    'G8': 3136,
+    'GS8': 3322,
+    'A8': 3520,
+    'AS8': 3729,
+    'B8': 3951,
+    'C9': 4186,
+    'CS9': 4435,
+    'D9': 4699,
+    'DS9': 4978,
+    'P': 0
+    }
+
+
+
+
+
+
+
+def parseRTTTL(text):
+    try:
+        title, defaults, song = text.split(':')
+        d, o, b = defaults.split(',')
+        d = int(d.split('=')[1])
+        o = int(o.split('=')[1])
+        b = int(b.split('=')[1])
+        whole = (60000/b)*4
+        noteList = song.split(',')
+    except:
+        return 'Not a valid RTTTL string'
+    notes = 'abcdefgp'
+    freqLengthList = []
+    for note in noteList:
+        index = 0
+        for i in note:
+ # Find letter
+            if i in notes:
+                index = note.find(i)
+                break
+        length = note[0:index]
+ # Get duration specifier (up to letter exclusive)
+        value = note[index:].replace('#','s').replace('.','')
+ # Get bit after letter and replace sharps or dots for eval
+        if not any(char.isdigit() for char in value):
+            value += str(o)
+ # If no octave specifier then add default octave for eval
+        if 'p' in value:
+            value = 'p'
+        if length == '':
+ # If no duration specifier then use default duration
+            length = d
+        else:
+            length = int(length)
+        length = whole/length
+        if '.' in note:
+            length += length/2
+        freqLengthList.append((note_freq[value.upper()], length))
+    return freqLengthList
+
+def play(text):
+    song = parseRTTTL(text)
+    if type(song) is not list:
+        return song
+    for freq, seconds in song:
+        milliseconds = seconds * 0.001
+        if freq > 0:
+            buzzer = PWM(Pin(BUZZER_PIN))
+            buzzer.freq(freq)
+            buzzer.duty_u16(512)
+        time.sleep(milliseconds*0.9)
+        if freq > 0:
+            buzzer.deinit()
+ # Stop buzzer after playing
+        time.sleep(milliseconds*0.1) # 0.1 second gap between notes
+        
+exampleSong = 'MissionImpossible:d=16,o=6,b=95:32d,32d#,32d,32d#,32d,32d#,32d,32d#,32d,32d,32d#,32e,32f,32f#,32g,g,8p,g,8p,a#,p,c7,p,g,8p,g,8p,f,p,f#,p,g,8p,g,8p,a#,p,c7,p,g,8p,g,8p,f,p,f#,p,a#,g,2d,32p,a#,g,2c#,32p,a#,g,2c,a#5,8c,2p,32p,a#5,g5,2f#,32p,a#5,g5,2f,32p,a#5,g5,2e,d#,8d'
+
+play(exampleSong)