Adding code and sound effects for fraz wrench

Adding code and sound effects for the fraz wrench project learn guide

Fraz_Wrench/code.py

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+# SPDX-FileCopyrightText: Copyright (c) 2023 Liz Clark for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
+import os
+import random
+import board
+import audiocore
+import audiobusio
+import audiomixer
+from digitalio import DigitalInOut, Direction
+import neopixel
+from adafruit_ticks import ticks_ms, ticks_add, ticks_diff
+from adafruit_led_animation.animation.pulse import Pulse
+from adafruit_led_animation.color import RED, GREEN
+import adafruit_character_lcd.character_lcd_i2c as character_lcd
+import adafruit_lis3dh
+from adafruit_seesaw.seesaw import Seesaw
+from adafruit_seesaw.rotaryio import IncrementalEncoder
+import keypad
+
+puzzle_time = 5 # seconds
+
+lcd_columns = 16
+lcd_rows = 2
+
+# enable external power pin
+# provides power to the external components
+external_power = DigitalInOut(board.EXTERNAL_POWER)
+external_power.direction = Direction.OUTPUT
+external_power.value = True
+
+i2c = board.I2C()
+
+int1 = DigitalInOut(board.ACCELEROMETER_INTERRUPT)
+lis3dh = adafruit_lis3dh.LIS3DH_I2C(i2c, int1=int1)
+lis3dh.range = adafruit_lis3dh.RANGE_2_G
+
+ss_enc0 = Seesaw(i2c, addr=0x36)
+enc0 = IncrementalEncoder(ss_enc0)
+
+button = keypad.Keys((board.EXTERNAL_BUTTON, board.D13,), value_when_pressed=False, pull=True)
+
+lcd = character_lcd.Character_LCD_I2C(i2c, lcd_columns, lcd_rows)
+lcd.backlight = True
+
+puzzle_msgs = ["UNLOCK\nDOOR", "DOOR\nUNLOCKED", "UNLOCKING"]
+
+wavs = []
+for filename in os.listdir('/fraz_sounds'):
+    if filename.lower().endswith('.wav') and not filename.startswith('.'):
+        wavs.append("/fraz_sounds/"+filename)
+wavs.sort()
+print(wavs)
+
+audio = audiobusio.I2SOut(board.I2S_BIT_CLOCK, board.I2S_WORD_SELECT, board.I2S_DATA)
+mixer = audiomixer.Mixer(voice_count=1, sample_rate=22050, channel_count=1,
+                         bits_per_sample=16, samples_signed=True, buffer_size=32768)
+volume = 0.5
+mixer.voice[0].level = volume
+audio.play(mixer)
+wav_length = len(wavs) - 1
+
+def open_audio(num):
+    n = wavs[num]
+    f = open(n, "rb")
+    w = audiocore.WaveFile(f)
+    return w
+
+PIXEL_PIN = board.EXTERNAL_NEOPIXELS
+BRIGHTNESS = 0.3
+NUM_PIXELS = 8
+
+PIXELS = neopixel.NeoPixel(PIXEL_PIN, NUM_PIXELS, auto_write=True)
+pulse = Pulse(PIXELS, speed=0.001, color=RED, period=3)
+
+puzzle_clock = ticks_ms()
+puzzle_time = puzzle_time * 1000
+
+puzzle = False
+wave = open_audio(0)
+pos0 = volume
+last_pos0 = pos0
+node_num = 0
+
+def normalize(val, min_v, max_v):
+    return max(min(max_v, val), min_v)
+
+def puzzle_string(length):
+    _string = ""
+    for _ in range(length/2):
+        b = random.randint(0, 1)
+        if b == 0:
+            r = chr(random.randint(ord('A'), ord('Z')))
+        else:
+            r = str(random.randint(0, 9))
+        _string += r
+    _string += "\n"
+    for _ in range(length/2):
+        b = random.randint(0, 1)
+        if b == 0:
+            r = chr(random.randint(ord('A'), ord('Z')))
+        else:
+            r = str(random.randint(0, 9))
+        _string += r
+    lcd.message = _string
+    return _string
+
+while True:
+    event = button.events.get()
+    if event and event.pressed:
+        number = event.key_number
+        if number == 0 and not puzzle:
+            pulse.fill(GREEN)
+            puzzle = True
+            lcd.clear()
+            lcd.message = puzzle_msgs[2]
+            wave = open_audio(1)
+            mixer.voice[0].play(wave)
+            while mixer.playing:
+                pass
+            puzzle_clock = ticks_add(ticks_ms(), puzzle_time)
+        if number == 1:
+            lcd.clear()
+            node_num = (node_num + 1) % 5
+            print(node_num)
+
+    if puzzle:
+        x, y, z = [
+            value / adafruit_lis3dh.STANDARD_GRAVITY for value in lis3dh.acceleration
+            ]
+        puzzle_string(lcd_columns*lcd_rows)
+        if z > 0:
+            wave = open_audio(2)
+            print("playing up")
+            pulse.fill(GREEN)
+        else:
+            wave = open_audio(3)
+            print("playing down")
+            pulse.fill(RED)
+        mixer.voice[0].play(wave)
+        while mixer.playing:
+            puzzle_string(lcd_columns*lcd_rows)
+            x, y, z = [
+            value / adafruit_lis3dh.STANDARD_GRAVITY for value in lis3dh.acceleration
+            ]
+            if z > 0:
+                pulse.fill(GREEN)
+            else:
+                pulse.fill(RED)
+            if ticks_diff(ticks_ms(), puzzle_clock) >= puzzle_time:
+                lcd.clear()
+                puzzle = False
+                lcd.message = puzzle_msgs[1]
+                wave = open_audio(4)
+                mixer.voice[0].play(wave)
+                while mixer.playing:
+                    pass
+                print("puzzle done")
+                wave = open_audio(0)
+                lcd.clear()
+                pulse.fill(RED)
+
+    if not puzzle:
+        pulse.animate()
+        mixer.voice[0].play(wave, loop=True)
+        if node_num > 3:
+            lcd.message = "SECURITY\nBREACHED"
+        else:
+            lcd.message = f"DEACTIVATED:\n{node_num} of 4"
+        pos0 = -enc0.position
+        if pos0 != last_pos0:
+            if pos0 > last_pos0:
+                volume = volume + 0.1
+            else:
+                volume = volume - 0.1
+            volume = normalize(volume, 0.0, 1.0)
+            mixer.voice[0].level = volume
+            last_pos0 = pos0