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| 1 | +# SPDX-FileCopyrightText: 2019 Kattni Rembor for Adafruit Industries |
| 2 | +# SPDX-FileCopyrightText: 2019 Limor Fried for Adafruit Industries |
| 3 | +# |
| 4 | +# SPDX-License-Identifier: MIT |
| 5 | + |
| 6 | +""" |
| 7 | +RP2040 Prop-Maker Feather Energy Sword |
| 8 | +Adafruit invests time and resources providing this open source code. |
| 9 | +Please support Adafruit and open source hardware by purchasing |
| 10 | +products from Adafruit! |
| 11 | +Written by Kattni Rembor & Limor Fried for Adafruit Industries |
| 12 | +Copyright (c) 2019-2020 Adafruit Industries |
| 13 | +Licensed under the MIT license. |
| 14 | +All text above must be included in any redistribution. |
| 15 | +""" |
| 16 | + |
| 17 | +import time |
| 18 | +import random |
| 19 | +import digitalio |
| 20 | +import audiocore |
| 21 | +import audiobusio |
| 22 | +import board |
| 23 | +import neopixel |
| 24 | +import adafruit_lis3dh |
| 25 | + |
| 26 | +# CUSTOMISE COLORS HERE: |
| 27 | +COLOR = (0, 120, 120) # Default idle is light blue |
| 28 | +ALT_COLOR = (255, 0, 250) # hit color is purple |
| 29 | + |
| 30 | +# CUSTOMISE IDLE PULSE SPEED HERE: 0 is fast, above 0 slows down |
| 31 | +IDLE_PULSE_SPEED = 0 # Default is 0 seconds |
| 32 | +SWING_BLAST_SPEED = 0.0007 |
| 33 | + |
| 34 | +# CUSTOMISE BRIGHTNESS HERE: must be a number between 0 and 1 |
| 35 | +IDLE_PULSE_BRIGHTNESS_MIN = 0.2 # Default minimum idle pulse brightness |
| 36 | +IDLE_PULSE_BRIGHTNESS_MAX = 1 # Default maximum idle pulse brightness |
| 37 | + |
| 38 | +# CUSTOMISE SENSITIVITY HERE: smaller numbers = more sensitive to motion |
| 39 | +HIT_THRESHOLD = 250 |
| 40 | +SWING_THRESHOLD = 150 |
| 41 | + |
| 42 | +# Set to the length in seconds of the "on.wav" file |
| 43 | +POWER_ON_SOUND_DURATION = 1.7 |
| 44 | + |
| 45 | +NUM_PIXELS = 73 # Number of pixels used in project |
| 46 | +NEOPIXEL_PIN = board.EXTERNAL_NEOPIXELS |
| 47 | + |
| 48 | +enable = digitalio.DigitalInOut(board.EXTERNAL_POWER) |
| 49 | +enable.direction = digitalio.Direction.OUTPUT |
| 50 | +enable.value = True |
| 51 | + |
| 52 | +strip = neopixel.NeoPixel(NEOPIXEL_PIN, NUM_PIXELS, brightness=1, auto_write=False) |
| 53 | +strip.fill(0) # NeoPixels off ASAP on startup |
| 54 | +strip.show() |
| 55 | + |
| 56 | +# i2s audio |
| 57 | +audio = audiobusio.I2SOut(board.I2S_BIT_CLOCK, board.I2S_WORD_SELECT, board.I2S_DATA) |
| 58 | +wave_file = None |
| 59 | + |
| 60 | +# Set up accelerometer on I2C bus, 4G range: |
| 61 | +i2c = board.I2C() # uses board.SCL and board.SDA |
| 62 | +# i2c = board.STEMMA_I2C() # For using the built-in STEMMA QT connector on a microcontroller |
| 63 | +accel = adafruit_lis3dh.LIS3DH_I2C(i2c) |
| 64 | +accel.range = adafruit_lis3dh.RANGE_4_G |
| 65 | + |
| 66 | +COLOR_IDLE = COLOR # 'idle' color is the default |
| 67 | +COLOR_HIT = ALT_COLOR # "hit" color is ALT_COLOR set above |
| 68 | +COLOR_SWING = (255, 255, 255) # "swing" color white |
| 69 | + |
| 70 | + |
| 71 | +def play_wav(name, loop=False): |
| 72 | + """ |
| 73 | + Play a WAV file in the 'sounds' directory. |
| 74 | + :param name: partial file name string, complete name will be built around |
| 75 | + this, e.g. passing 'foo' will play file 'sounds/foo.wav'. |
| 76 | + :param loop: if True, sound will repeat indefinitely (until interrupted |
| 77 | + by another sound). |
| 78 | + """ |
| 79 | + global wave_file # pylint: disable=global-statement |
| 80 | + print("playing", name) |
| 81 | + if wave_file: |
| 82 | + wave_file.close() |
| 83 | + try: |
| 84 | + wave_file = open('sounds/' + name + '.wav', 'rb') |
| 85 | + wave = audiocore.WaveFile(wave_file) |
| 86 | + audio.play(wave, loop=loop) |
| 87 | + except OSError: |
| 88 | + pass # we'll just skip playing then |
| 89 | + |
| 90 | + |
| 91 | +def power_on(sound, duration): |
| 92 | + """ |
| 93 | + Animate NeoPixels with accompanying sound effect for power on. |
| 94 | + :param sound: sound name (similar format to play_wav() above) |
| 95 | + :param duration: estimated duration of sound, in seconds (>0.0) |
| 96 | + """ |
| 97 | + prev = 0 |
| 98 | + start_time = time.monotonic() # Save audio start time |
| 99 | + play_wav(sound) |
| 100 | + while True: |
| 101 | + elapsed = time.monotonic() - start_time # Time spent playing sound |
| 102 | + if elapsed > duration: # Past sound duration? |
| 103 | + break # Stop animating |
| 104 | + animation_time = elapsed / duration # Animation time, 0.0 to 1.0 |
| 105 | + threshold = int(NUM_PIXELS * animation_time + 0.5) |
| 106 | + num = threshold - prev # Number of pixels to light on this pass |
| 107 | + if num != 0: |
| 108 | + strip[prev:threshold] = [ALT_COLOR] * num |
| 109 | + strip.show() |
| 110 | + prev = threshold |
| 111 | + |
| 112 | + |
| 113 | +def mix(color_1, color_2, weight_2): |
| 114 | + """ |
| 115 | + Blend between two colors with a given ratio. |
| 116 | + :param color_1: first color, as an (r,g,b) tuple |
| 117 | + :param color_2: second color, as an (r,g,b) tuple |
| 118 | + :param weight_2: Blend weight (ratio) of second color, 0.0 to 1.0 |
| 119 | + :return (r,g,b) tuple, blended color |
| 120 | + """ |
| 121 | + if weight_2 < 0.0: |
| 122 | + weight_2 = 0.0 |
| 123 | + elif weight_2 > 1.0: |
| 124 | + weight_2 = 1.0 |
| 125 | + weight_1 = 1.0 - weight_2 |
| 126 | + return (int(color_1[0] * weight_1 + color_2[0] * weight_2), |
| 127 | + int(color_1[1] * weight_1 + color_2[1] * weight_2), |
| 128 | + int(color_1[2] * weight_1 + color_2[2] * weight_2)) |
| 129 | + |
| 130 | +# List of swing wav files without the .wav in the name for use with play_wav() |
| 131 | +swing_sounds = [ |
| 132 | + 'swing1', |
| 133 | + 'swing2', |
| 134 | + 'swing3', |
| 135 | + 'swing4', |
| 136 | +] |
| 137 | + |
| 138 | +# List of hit wav files without the .wav in the name for use with play_wav() |
| 139 | +hit_sounds = [ |
| 140 | + 'hit1', |
| 141 | + 'hit2', |
| 142 | + 'hit3', |
| 143 | + 'hit4', |
| 144 | +] |
| 145 | + |
| 146 | + |
| 147 | +mode = 0 # Initial mode = OFF |
| 148 | + |
| 149 | +# Setup idle pulse |
| 150 | +idle_brightness = IDLE_PULSE_BRIGHTNESS_MIN # current brightness of idle pulse |
| 151 | +idle_increment = 0.01 # Initial idle pulse direction |
| 152 | + |
| 153 | +# Main loop |
| 154 | +while True: |
| 155 | + |
| 156 | + if mode == 0: # If currently off... |
| 157 | + enable.value = True |
| 158 | + power_on('on', POWER_ON_SOUND_DURATION) # Power up! |
| 159 | + play_wav('idle', loop=True) # Play idle sound now |
| 160 | + mode = 1 # Idle mode |
| 161 | + |
| 162 | + # Setup for idle pulse |
| 163 | + idle_brightness = IDLE_PULSE_BRIGHTNESS_MIN |
| 164 | + idle_increment = 0.01 |
| 165 | + strip.fill([int(c*idle_brightness) for c in COLOR]) |
| 166 | + strip.show() |
| 167 | + |
| 168 | + elif mode >= 1: # If not OFF mode... |
| 169 | + x, y, z = accel.acceleration # Read accelerometer |
| 170 | + accel_total = x * x + z * z |
| 171 | + # (Y axis isn't needed, due to the orientation that the Prop-Maker |
| 172 | + # Wing is mounted. Also, square root isn't needed, since we're |
| 173 | + # comparing thresholds...use squared values instead.) |
| 174 | + if accel_total > HIT_THRESHOLD: # Large acceleration = HIT |
| 175 | + TRIGGER_TIME = time.monotonic() # Save initial time of hit |
| 176 | + play_wav(random.choice(hit_sounds)) # Start playing 'hit' sound |
| 177 | + COLOR_ACTIVE = COLOR_HIT # Set color to fade from |
| 178 | + mode = 3 # HIT mode |
| 179 | + elif mode == 1 and accel_total > SWING_THRESHOLD: # Mild = SWING |
| 180 | + TRIGGER_TIME = time.monotonic() # Save initial time of swing |
| 181 | + play_wav(random.choice(swing_sounds)) # Randomly choose from available swing sounds |
| 182 | + # make a larson scanner animation_time |
| 183 | + strip_backup = strip[0:-1] |
| 184 | + for p in range(-1, len(strip)): |
| 185 | + for i in range (p-1, p+2): # shoot a 'ray' of 3 pixels |
| 186 | + if 0 <= i < len(strip): |
| 187 | + strip[i] = COLOR_SWING |
| 188 | + strip.show() |
| 189 | + time.sleep(SWING_BLAST_SPEED) |
| 190 | + if 0 <= (p-1) < len(strip): |
| 191 | + strip[p-1] = strip_backup[p-1] # restore previous color at the tail |
| 192 | + strip.show() |
| 193 | + while audio.playing: |
| 194 | + pass # wait till we're done |
| 195 | + mode = 2 # we'll go back to idle mode |
| 196 | + |
| 197 | + elif mode == 1: |
| 198 | + # Idle pulse |
| 199 | + idle_brightness += idle_increment # Pulse up |
| 200 | + if idle_brightness > IDLE_PULSE_BRIGHTNESS_MAX or \ |
| 201 | + idle_brightness < IDLE_PULSE_BRIGHTNESS_MIN: # Then... |
| 202 | + idle_increment *= -1 # Pulse direction flip |
| 203 | + strip.fill([int(c*idle_brightness) for c in COLOR_IDLE]) |
| 204 | + strip.show() |
| 205 | + time.sleep(IDLE_PULSE_SPEED) # Idle pulse speed set above |
| 206 | + elif mode > 1: # If in SWING or HIT mode... |
| 207 | + if audio.playing: # And sound currently playing... |
| 208 | + blend = time.monotonic() - TRIGGER_TIME # Time since triggered |
| 209 | + if mode == 2: # If SWING, |
| 210 | + blend = abs(0.5 - blend) * 2.0 # ramp up, down |
| 211 | + strip.fill(mix(COLOR_ACTIVE, COLOR, blend)) # Fade from hit/swing to base color |
| 212 | + strip.show() |
| 213 | + else: # No sound now, but still SWING or HIT modes |
| 214 | + play_wav('idle', loop=True) # Resume idle sound |
| 215 | + mode = 1 # Return to idle mode |
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