可以在线制作Buzz音乐的工具
James的Buzz_music代码：
from machine import Pin, PWM from math import ceil tones = { 'C0':16, 'C#0':17, 'D0':18, 'D#0':19, 'E0':21, 'F0':22, 'F#0':23, 'G0':24, 'G#0':26, 'A0':28, 'A#0':29, 'B0':31, 'C1':33, 'C#1':35, 'D1':37, 'D#1':39, 'E1':41, 'F1':44, 'F#1':46, 'G1':49, 'G#1':52, 'A1':55, 'A#1':58, 'B1':62, 'C2':65, 'C#2':69, 'D2':73, 'D#2':78, 'E2':82, 'F2':87, 'F#2':92, 'G2':98, 'G#2':104, 'A2':110, 'A#2':117, 'B2':123, 'C3':131, 'C#3':139, 'D3':147, 'D#3':156, 'E3':165, 'F3':175, 'F#3':185, 'G3':196, 'G#3':208, 'A3':220, 'A#3':233, 'B3':247, 'C4':262, 'C#4':277, 'D4':294, 'D#4':311, 'E4':330, 'F4':349, 'F#4':370, 'G4':392, 'G#4':415, 'A4':440, 'A#4':466, 'B4':494, 'C5':523, 'C#5':554, 'D5':587, 'D#5':622, 'E5':659, 'F5':698, 'F#5':740, 'G5':784, 'G#5':831, 'A5':880, 'A#5':932, 'B5':988, 'C6':1047, 'C#6':1109, 'D6':1175, 'D#6':1245, 'E6':1319, 'F6':1397, 'F#6':1480, 'G6':1568, 'G#6':1661, 'A6':1760, 'A#6':1865, 'B6':1976, 'C7':2093, 'C#7':2217, 'D7':2349, 'D#7':2489, 'E7':2637, 'F7':2794, 'F#7':2960, 'G7':3136, 'G#7':3322, 'A7':3520, 'A#7':3729, 'B7':3951, 'C8':4186, 'C#8':4435, 'D8':4699, 'D#8':4978, 'E8':5274, 'F8':5588, 'F#8':5920, 'G8':6272, 'G#8':6645, 'A8':7040, 'A#8':7459, 'B8':7902, 'C9':8372, 'C#9':8870, 'D9':9397, 'D#9':9956, 'E9':10548, 'F9':11175, 'F#9':11840, 'G9':12544, 'G#9':13290, 'A9':14080, 'A#9':14917, 'B9':15804 } #Time, Note, Duration, Instrument (onlinesequencer.net schematic format) #0 D4 8 0;0 D5 8 0;0 G4 8 0;8 C5 2 0;10 B4 2 0;12 G4 2 0;14 F4 1 0;15 G4 17 0;16 D4 8 0;24 C4 8 0 class music: def __init__(self, songString='0 D4 8 0', looping=True, tempo=3, duty=2512, pin=None, pins=[Pin(0)]): self.tempo = tempo self.song = songString self.looping = looping self.duty = duty self.stopped = False self.timer = -1 self.beat = -1 self.arpnote = 0 self.pwms = [] if (not (pin is None)): pins = [pin] i = 0 for pin in pins: self.pwms.append(PWM(pins[i])) i = i + 1 self.notes = [] self.playingNotes = [] self.playingDurations = [] #Find the end of the song self.end = 0 splitSong = self.song.split(";") for note in splitSong: snote = note.split(" ") testEnd = round(float(snote[0])) + ceil(float(snote[2])) if (testEnd > self.end): self.end = testEnd #Create empty song structure while (self.end > len(self.notes)): self.notes.append(None) #Populate song structure with the notes for note in splitSong: snote = note.split(" ") beat = round(float(snote[0])); if (self.notes[beat] == None): self.notes[beat] = [] self.notes[beat].append([snote[1],ceil(float(snote[2]))]) #Note, Duration #Round up end of song to nearest bar self.end = ceil(self.end / 8) * 8 def stop(self): for pwm in self.pwms: pwm.deinit() self.stopped = True def tick(self): if (not self.stopped): self.timer = self.timer + 1 #Loop if (self.timer % (self.tempo * self.end) == 0 and (not (self.timer == 0))): if (not self.looping): self.stop() return False self.beat = -1 self.timer = 0 #On Beat if (self.timer % self.tempo == 0): self.beat = self.beat + 1 #Remove expired notes from playing list i = 0 while (i < len(self.playingDurations)): self.playingDurations[i] = self.playingDurations[i] - 1 if (self.playingDurations[i] <= 0): self.playingNotes.pop(i) self.playingDurations.pop(i) else: i = i + 1 #Add new notes and their durations to the playing list """ #Old method runs for every note, slow to process on every beat and causes noticeable delay ssong = song.split(";") for note in ssong: snote = note.split(" ") if int(snote[0]) == beat: playingNotes.append(snote[1]) playingDurations.append(int(snote[2])) """ if (self.beat < len(self.notes)): if (self.notes[self.beat] != None): for note in self.notes[self.beat]: self.playingNotes.append(note[0]) self.playingDurations.append(note[1]) #Only need to run these checks on beats i = 0 for pwm in self.pwms: if (i >= len(self.playingNotes)): pwm.duty_u16(0) else: #Play note pwm.duty_u16(self.duty) pwm.freq(tones[self.playingNotes[i]]) i = i + 1 #Play arp of all playing notes if (len(self.playingNotes) > len(self.pwms)): self.pwms[len(self.pwms)-1].duty_u16(self.duty) if (self.arpnote > len(self.playingNotes)-len(self.pwms)): self.arpnote = 0 self.pwms[len(self.pwms)-1].freq(tones[self.playingNotes[self.arpnote+(len(self.pwms)-1)]]) self.arpnote = self.arpnote + 1 return True else: return False
示例代码：example.py
from buzzer_music import music from time import sleep #Example songs song = '0 A#4 1 1;2 F5 1 1;4 D#5 1 1;8 D5 1 1;11 D5 1 1;6 A#4 1 1;14 D#5 1 1;18 A#4 1 1;20 D#5 1 1;22 A#4 1 1;24 D5 1 1;27 D5 1 1;30 D#5 1 1;32 A#4 1 1;34 F5 1 1;36 D#5 1 1;38 A#4 1 1;40 D5 1 1;43 D5 1 1;46 D#5 1 1;50 A#4 1 1;52 D#5 1 1;54 G5 1 1;56 F5 1 1;59 D#5 1 1;62 F5 1 1;64 A#4 1 1;66 F5 1 1;68 D#5 1 1;70 A#4 1 1;72 D5 1 1;75 D5 1 1;78 D#5 1 1;82 A#4 1 1;84 D#5 1 1;86 A#4 1 1;88 D5 1 1;91 D5 1 1;94 D#5 1 1;96 A#4 1 1;100 D#5 1 1;102 A#4 1 1;104 D5 1 1;107 D5 1 1;110 D#5 1 1;114 A#4 1 1;116 D#5 1 1;118 G5 1 1;120 F5 1 1;123 D#5 1 1;126 F5 1 1;98 F5 1 1' from machine import Pin #One buzzer on pin 0 mySong = music(song, pins=[Pin(19)]) #Four buzzers #mySong = music(song, pins=[Pin(0),Pin(1),Pin(2),Pin(3)]) while True: print(mySong.tick()) sleep(0.04)