from machine import Pin, PWM
import time

#para configurar el PWM necesitamos dos parámetros:
#Frecuencia (frequency) y el ciclo de trabajo (duty_cycle)

#Con la raspberry Pi Pico se puede tener una frecuencia de 0 a 19200000 hz
#Y un ciclo de trabajo de 0 a 65535

speaker = machine.PWM(machine.Pin(7))

c4 = 261 #Nota C4 con 261 de frecuencia en hz
g4 = 391
a4 = 440
f4 = 349
e4 = 329
d4 = 293

def play_note(nota, duracion, tiempo_de_espera):
    speaker.duty_u16(int(65535/2))
    speaker.freq(nota)
    time.sleep(duracion)
    speaker.duty_u16(int(0))
    time.sleep(tiempo_de_espera)

#1   
play_note(c4,0.4, 0.2)
play_note(c4,0.4, 0.2)
play_note(g4,0.4, 0.2)
play_note(g4,0.4, 0.2)
play_note(a4,0.4, 0.2)
play_note(a4,0.4, 0.2)
play_note(g4,0.7, 0.4)

#2
play_note(f4,0.4, 0.2)
play_note(f4,0.4, 0.2)
play_note(e4,0.4, 0.2)
play_note(e4,0.4, 0.2)
play_note(d4,0.4, 0.2)
play_note(d4,0.4, 0.2)
play_note(c4,0.7, 0.4)

#3
play_note(g4,0.4, 0.2)
play_note(g4,0.4, 0.2)
play_note(f4,0.4, 0.2)
play_note(f4,0.4, 0.2)
play_note(e4,0.4, 0.2)
play_note(e4,0.4, 0.2)
play_note(d4,0.7, 0.4)

#4
play_note(g4,0.4, 0.2)
play_note(g4,0.4, 0.2)
play_note(f4,0.4, 0.2)
play_note(f4,0.4, 0.2)
play_note(e4,0.4, 0.2)
play_note(e4,0.4, 0.2)
play_note(d4,0.7, 0.4)

#5
play_note(c4,0.4, 0.2)
play_note(c4,0.4, 0.2)
play_note(g4,0.4, 0.2)
play_note(g4,0.4, 0.2)
play_note(a4,0.4, 0.2)
play_note(a4,0.4, 0.2)
play_note(g4,0.7, 0.4)

#6
play_note(f4,0.4, 0.2)
play_note(f4,0.4, 0.2)
play_note(e4,0.4, 0.2)
play_note(e4,0.4, 0.2)
play_note(d4,0.4, 0.2)
play_note(d4,0.4, 0.2)
play_note(c4,0.7, 0.4)