【得捷电子Follow me第3期】任务3控制蜂鸣器播放音乐

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【得捷电子Follow me第3期】任务3控制蜂鸣器播放音乐 [复制链接]

开发的扩展板板载了一个蜂鸣器，接在PIN5个

1、我们引入import machine

2、pin为5：buzzer_pin = machine.Pin(5, machine.Pin.OUT)

3、配置为pwm输出：buzzer = machine.PWM(buzzer_pin)

4、指定频率为1047：buzzer.freq(1047)

5、在主循环中修改占空比，以达到响与关的效果：

while True:

buzzer.duty(100)

time.sleep(1)

buzzer.duty(0)

time.sleep(1)

播放音乐

pwm的频率决定音调，根据资料定义音谱频率如下：
# Defining frequency of each music note
NOTE_C4 = 262
NOTE_D4 = 294
NOTE_E4 = 330
NOTE_F4 = 349
NOTE_G4 = 392
NOTE_A4 = 440
NOTE_B4 = 494
NOTE_C5 = 523
NOTE_D5 = 587
NOTE_E5 = 659
NOTE_F5 = 698
NOTE_G5 = 784
NOTE_A5 = 880
NOTE_B5 = 988
根据乐谱，制定如下频率表：
# Music notes of the song, 0 is a rest/pulse
notes = [
NOTE_E4, NOTE_G4, NOTE_A4, NOTE_A4, 0,
NOTE_A4, NOTE_B4, NOTE_C5, NOTE_C5, 0,
NOTE_C5, NOTE_D5, NOTE_B4, NOTE_B4, 0,
NOTE_A4, NOTE_G4, NOTE_A4, 0,
NOTE_E4, NOTE_G4, NOTE_A4, NOTE_A4, 0,
NOTE_A4, NOTE_B4, NOTE_C5, NOTE_C5, 0,
NOTE_C5, NOTE_D5, NOTE_B4, NOTE_B4, 0,
NOTE_A4, NOTE_G4, NOTE_A4, 0,
NOTE_E4, NOTE_G4, NOTE_A4, NOTE_A4, 0,
NOTE_A4, NOTE_C5, NOTE_D5, NOTE_D5, 0,
NOTE_D5, NOTE_E5, NOTE_F5, NOTE_F5, 0,
NOTE_E5, NOTE_D5, NOTE_E5, NOTE_A4, 0,
NOTE_A4, NOTE_B4, NOTE_C5, NOTE_C5, 0,
NOTE_D5, NOTE_E5, NOTE_A4, 0,
NOTE_A4, NOTE_C5, NOTE_B4, NOTE_B4, 0,
NOTE_C5, NOTE_A4, NOTE_B4, 0,
NOTE_A4, NOTE_A4,
#Repeat of first part
NOTE_A4, NOTE_B4, NOTE_C5, NOTE_C5, 0,
NOTE_C5, NOTE_D5, NOTE_B4, NOTE_B4, 0,
NOTE_A4, NOTE_G4, NOTE_A4, 0,
NOTE_E4, NOTE_G4, NOTE_A4, NOTE_A4, 0,
NOTE_A4, NOTE_B4, NOTE_C5, NOTE_C5, 0,
NOTE_C5, NOTE_D5, NOTE_B4, NOTE_B4, 0,
NOTE_A4, NOTE_G4, NOTE_A4, 0,
NOTE_E4, NOTE_G4, NOTE_A4, NOTE_A4, 0,
NOTE_A4, NOTE_C5, NOTE_D5, NOTE_D5, 0,
NOTE_D5, NOTE_E5, NOTE_F5, NOTE_F5, 0,
NOTE_E5, NOTE_D5, NOTE_E5, NOTE_A4, 0,
NOTE_A4, NOTE_B4, NOTE_C5, NOTE_C5, 0,
NOTE_D5, NOTE_E5, NOTE_A4, 0,
NOTE_A4, NOTE_C5, NOTE_B4, NOTE_B4, 0,
NOTE_C5, NOTE_A4, NOTE_B4, 0,
#End of Repeat
NOTE_E5, 0, 0, NOTE_F5, 0, 0,
NOTE_E5, NOTE_E5, 0, NOTE_G5, 0, NOTE_E5, NOTE_D5, 0, 0,
NOTE_D5, 0, 0, NOTE_C5, 0, 0,
NOTE_B4, NOTE_C5, 0, NOTE_B4, 0, NOTE_A4,
NOTE_E5, 0, 0, NOTE_F5, 0, 0,
NOTE_E5, NOTE_E5, 0, NOTE_G5, 0, NOTE_E5, NOTE_D5, 0, 0,
NOTE_D5, 0, 0, NOTE_C5, 0, 0,
NOTE_B4, NOTE_C5, 0, NOTE_B4, 0, NOTE_A4
]
而延时决定声音的长短。我们根据乐谱制作时序如下表：

# Durations (in ms) of each music note of the song

# Quarter Note is 250 ms when songSpeed = 1.0

durations = [

125, 125, 250, 125, 125,

125, 125, 375, 125,

125, 125, 250, 125, 125,

125, 125, 375, 125,

125, 125, 250, 125, 125,

125, 125, 125, 250, 125,

125, 125, 250, 125, 125,

250, 125, 250, 125,

125, 125, 250, 125, 125,

125, 125, 375, 375,

250, 125,

#Rpeat of First Part

125, 125, 250, 125, 125,

125, 125, 375, 125,

125, 125, 250, 125, 125,

125, 125, 375, 125,

125, 125, 250, 125, 125,

125, 125, 125, 250, 125,

125, 125, 250, 125, 125,

250, 125, 250, 125,

125, 125, 250, 125, 125,

125, 125, 375, 375,

#End of Repeat

250, 125, 375, 250, 125, 375,

125, 125, 125, 125, 125, 125, 125, 125, 375,

250, 125, 375, 250, 125, 375,

125, 125, 125, 125, 125, 500,

250, 125, 375, 250, 125, 375,

125, 125, 125, 125, 125, 125, 125, 125, 375,

250, 125, 375, 250, 125, 375,

125, 125, 125, 125, 125, 500

]

结合以上三个数组，做播放声音程序如下：

def play_song():

total_notes = len(notes)

for i in range(total_notes):

current_note = notes

wait = durations

if current_note != 0:

buzzer.duty(512) # Set duty cycle for sound

buzzer.freq(current_note) # Set frequency of the note

else:

buzzer.duty(0) # Turn off the sound

time.sleep_ms(wait)

buzzer.duty(0) # Turn off the sound

总的程序如下：

import machine import time from machine import Pin, SoftI2C import ssd1306py as lcd i2c = SoftI2C(scl=Pin(7), sda=Pin(6)) # Adjust the Pin numbers based on your connections lcd.init_i2c(7,6,128,64) lcd.text('PLAY SONG', 10, 10, 16) lcd.show() # Buzzer settings buzzer_pin = machine.Pin(5, machine.Pin.OUT) buzzer = machine.PWM(buzzer_pin) buzzer.freq(1047) # Defining frequency of each music note NOTE_C4 = 262 NOTE_D4 = 294 NOTE_E4 = 330 NOTE_F4 = 349 NOTE_G4 = 392 NOTE_A4 = 440 NOTE_B4 = 494 NOTE_C5 = 523 NOTE_D5 = 587 NOTE_E5 = 659 NOTE_F5 = 698 NOTE_G5 = 784 NOTE_A5 = 880 NOTE_B5 = 988 # Music notes of the song, 0 is a rest/pulse notes = [ NOTE_E4, NOTE_G4, NOTE_A4, NOTE_A4, 0, NOTE_A4, NOTE_B4, NOTE_C5, NOTE_C5, 0, NOTE_C5, NOTE_D5, NOTE_B4, NOTE_B4, 0, NOTE_A4, NOTE_G4, NOTE_A4, 0, NOTE_E4, NOTE_G4, NOTE_A4, NOTE_A4, 0, NOTE_A4, NOTE_B4, NOTE_C5, NOTE_C5, 0, NOTE_C5, NOTE_D5, NOTE_B4, NOTE_B4, 0, NOTE_A4, NOTE_G4, NOTE_A4, 0, NOTE_E4, NOTE_G4, NOTE_A4, NOTE_A4, 0, NOTE_A4, NOTE_C5, NOTE_D5, NOTE_D5, 0, NOTE_D5, NOTE_E5, NOTE_F5, NOTE_F5, 0, NOTE_E5, NOTE_D5, NOTE_E5, NOTE_A4, 0, NOTE_A4, NOTE_B4, NOTE_C5, NOTE_C5, 0, NOTE_D5, NOTE_E5, NOTE_A4, 0, NOTE_A4, NOTE_C5, NOTE_B4, NOTE_B4, 0, NOTE_C5, NOTE_A4, NOTE_B4, 0, NOTE_A4, NOTE_A4, #Repeat of first part NOTE_A4, NOTE_B4, NOTE_C5, NOTE_C5, 0, NOTE_C5, NOTE_D5, NOTE_B4, NOTE_B4, 0, NOTE_A4, NOTE_G4, NOTE_A4, 0, NOTE_E4, NOTE_G4, NOTE_A4, NOTE_A4, 0, NOTE_A4, NOTE_B4, NOTE_C5, NOTE_C5, 0, NOTE_C5, NOTE_D5, NOTE_B4, NOTE_B4, 0, NOTE_A4, NOTE_G4, NOTE_A4, 0, NOTE_E4, NOTE_G4, NOTE_A4, NOTE_A4, 0, NOTE_A4, NOTE_C5, NOTE_D5, NOTE_D5, 0, NOTE_D5, NOTE_E5, NOTE_F5, NOTE_F5, 0, NOTE_E5, NOTE_D5, NOTE_E5, NOTE_A4, 0, NOTE_A4, NOTE_B4, NOTE_C5, NOTE_C5, 0, NOTE_D5, NOTE_E5, NOTE_A4, 0, NOTE_A4, NOTE_C5, NOTE_B4, NOTE_B4, 0, NOTE_C5, NOTE_A4, NOTE_B4, 0, #End of Repeat NOTE_E5, 0, 0, NOTE_F5, 0, 0, NOTE_E5, NOTE_E5, 0, NOTE_G5, 0, NOTE_E5, NOTE_D5, 0, 0, NOTE_D5, 0, 0, NOTE_C5, 0, 0, NOTE_B4, NOTE_C5, 0, NOTE_B4, 0, NOTE_A4, NOTE_E5, 0, 0, NOTE_F5, 0, 0, NOTE_E5, NOTE_E5, 0, NOTE_G5, 0, NOTE_E5, NOTE_D5, 0, 0, NOTE_D5, 0, 0, NOTE_C5, 0, 0, NOTE_B4, NOTE_C5, 0, NOTE_B4, 0, NOTE_A4 ] # Durations (in ms) of each music note of the song # Quarter Note is 250 ms when songSpeed = 1.0 durations = [ 125, 125, 250, 125, 125, 125, 125, 250, 125, 125, 125, 125, 250, 125, 125, 125, 125, 375, 125, 125, 125, 250, 125, 125, 125, 125, 250, 125, 125, 125, 125, 250, 125, 125, 125, 125, 375, 125, 125, 125, 250, 125, 125, 125, 125, 250, 125, 125, 125, 125, 250, 125, 125, 125, 125, 125, 250, 125, 125, 125, 250, 125, 125, 250, 125, 250, 125, 125, 125, 250, 125, 125, 125, 125, 375, 375, 250, 125, #Rpeat of First Part 125, 125, 250, 125, 125, 125, 125, 250, 125, 125, 125, 125, 375, 125, 125, 125, 250, 125, 125, 125, 125, 250, 125, 125, 125, 125, 250, 125, 125, 125, 125, 375, 125, 125, 125, 250, 125, 125, 125, 125, 250, 125, 125, 125, 125, 250, 125, 125, 125, 125, 125, 250, 125, 125, 125, 250, 125, 125, 250, 125, 250, 125, 125, 125, 250, 125, 125, 125, 125, 375, 375, #End of Repeat 250, 125, 375, 250, 125, 375, 125, 125, 125, 125, 125, 125, 125, 125, 375, 250, 125, 375, 250, 125, 375, 125, 125, 125, 125, 125, 500, 250, 125, 375, 250, 125, 375, 125, 125, 125, 125, 125, 125, 125, 125, 375, 250, 125, 375, 250, 125, 375, 125, 125, 125, 125, 125, 500 ] def play_song(): total_notes = len(notes) for i in range(total_notes): current_note = notes[i] wait = durations[i] if current_note != 0: buzzer.duty(512) # Set duty cycle for sound buzzer.freq(current_note) # Set frequency of the note else: buzzer.duty(0) # Turn off the sound time.sleep_ms(wait) buzzer.duty(0) # Turn off the sound while True: # Play the song play_song()

实现效果：

播放音乐