Adding files for HAL9000 Propmaker

Adding files for HAL9000 Propmaker

HAL9000_RP2040_PropMaker/code.py

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+# SPDX-FileCopyrightText: 2023 Phil Burgess for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
+"""
+HAL 9000 demo project for Adafruit Prop Maker Feather RP2040 and "Massive
+Arade Button with LED - 100mm red." This simply monitors for button presses
+and then randomly plays one WAV file from the CIRCUITPY filesystem.
+No soldering required; using quick-connects, LED and button can be wired
+to screw terminals on the Prop Maker Feather board.
+NOTE: WAV FILES MUST BE 16-BIT. This will be fixed (allowing 8-bit WAVs if
+desired) in CircuitPython 9.0.
+"""
+
+# pylint: disable=import-error
+import os
+import random
+import time
+import audiocore
+import audiobusio
+import board
+import digitalio
+import pwmio
+
+
+# HARDWARE SETUP -----------------------------------------------------------
+
+# LED+ is wired to "Neo" pin on screw terminal header, LED- to GND.
+# The LED inside the button is NOT a NeoPixel, just a normal passive LED,
+# but that's okay here -- the "Neo" pin can also function like a simple
+# 5V digital output or PWM pin.
+led = pwmio.PWMOut(board.EXTERNAL_NEOPIXELS)
+led.duty_cycle = 65535  # LED ON by default
+
+# Button is wired to GND and "Btn" on screw terminal header:
+button = digitalio.DigitalInOut(board.EXTERNAL_BUTTON)
+button.direction = digitalio.Direction.INPUT
+button.pull = digitalio.Pull.UP
+
+# Enable power to audio amp, etc.
+external_power = digitalio.DigitalInOut(board.EXTERNAL_POWER)
+external_power.direction = digitalio.Direction.OUTPUT
+external_power.value = True
+
+# I2S audio out
+audio = audiobusio.I2SOut(board.I2S_BIT_CLOCK, board.I2S_WORD_SELECT, board.I2S_DATA)
+
+# Find all Wave files in CIRCUITPY storage:
+wavefiles = [
+    file
+    for file in os.listdir("/sounds/")
+    if (file.endswith(".wav") and not file.startswith("._"))
+]
+print("Audio files found:", wavefiles)
+
+# FUNCTIONS ----------------------------------------------------------------
+
+
+def play_file(filename):
+    """Plays a WAV file in its entirety (function blocks until done)."""
+    print("Playing", filename)
+    with open(f"/sounds/{filename}", "rb") as file:
+        audio.play(audiocore.WaveFile(file))
+        # Randomly flicker the LED a bit while audio plays
+        while audio.playing:
+            led.duty_cycle = random.randint(5000, 30000)
+            time.sleep(0.1)
+    led.duty_cycle = 65535  # Back to full brightness
+
+
+# MAIN LOOP ----------------------------------------------------------------
+
+
+# Loop simply watches for a button press (button pin pulled to GND, thus
+# False) and then plays a random WAV file. Because the WAV-playing function
+# will take a few seconds, this doesn't even require button debouncing.
+while True:
+    if button.value is False:
+        play_file(random.choice(wavefiles))