# code to play a wave file saved on the Pico microcontroller


import machine
from machine import SPI,Pin
import utime
import os
import os as uos
from wavePlayer import wavePlayer
import wave

#define the pin to the amp and speaker
pwm = machine.PWM(machine.Pin(19))

#turn on the amplifier
amp_shutdown_pin = machine.Pin(21, machine.Pin.OUT, machine.Pin.PULL_UP)
amp_shutdown_pin.value(0)

# code to check what files are on the Pico microcontroller in the "sounds" folder
waveFolder= "/sounds"
wavelist = []

# get a list of .wav files
for i in os.listdir(waveFolder):
    if i.find(".wav")>=0:
        wavelist.append(waveFolder+"/"+i)
    elif i.find(".WAV")>=0:
        wavelist.append(waveFolder+"/"+i)

if not wavelist :
    print("Warning NO '.wav' files")
else:
    for i in wavelist:
        print(i)
        

# play the R2D2 wav file from the pico flash memory
player = wavePlayer()

try:
    while True:
        # repeat this over and over until the keyboard shuts down the circuit
        player.play('/sounds/hello_neil_2.wav') # originally was /sounds/r2d2-taking-to-himself.wav
except KeyboardInterrupt:
    player.stop()
    print("wave player terminated")


#turn off the amplifier
amp_shutdown_pin.value(1)