174 lines
4.5 KiB
Python
174 lines
4.5 KiB
Python
import time
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import board
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import displayio
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import terminalio
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import simpleio
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from adafruit_display_text import label
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from adafruit_display_shapes.rect import Rect
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from adafruit_clue import clue
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blink_light = True # optional flashing backlight on accent
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tempo = 120 # in bpm
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print("BPM: {}".format(tempo))
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time_signature = 4 # Beats per measure
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BEEP_DURATION = 0.05
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delay = 60 / tempo
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clue.display.brightness = 1.0
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clue.pixel.brightness = 0.2
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screen = displayio.Group()
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TEAL = 0x009E98
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LT_TEAL = 0x000F0F
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GRAY = 0x02403E
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BLACK = 0x000000
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WHITE = 0xFFFFFF
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YELLOW = 0xFFFF00
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clue.pixel.fill(0) # Turn off the pixel
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# Setup screen
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# BG
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color_bitmap = displayio.Bitmap(240, 240, 1)
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color_palette = displayio.Palette(1)
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color_palette[0] = TEAL
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bg_sprite = displayio.TileGrid(color_bitmap, x=0, y=0, pixel_shader=color_palette)
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screen.append(bg_sprite)
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# title box
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title_box = Rect(0, 0, 240, 60, fill=GRAY, outline=None)
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screen.append(title_box)
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# title text
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title_label = label.Label(
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terminalio.FONT, text="Metronome", scale=4, color=TEAL
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)
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title_label.x = 14
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title_label.y = 26
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screen.append(title_label)
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# interval text
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interval_label = label.Label(
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terminalio.FONT, text="{} BPM".format(tempo), scale=5, color=WHITE
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)
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interval_label.x = 20
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interval_label.y = 95
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screen.append(interval_label)
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# mid line
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mid_line = Rect(0, 134, 240, 3, fill=GRAY, outline=None)
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screen.append(mid_line)
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# vert line
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vert_line = Rect(117, 134, 3, 56, fill=GRAY, outline=None)
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screen.append(vert_line)
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# Signature text
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sig_label = label.Label(
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terminalio.FONT,
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text="{}/4".format(time_signature),
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scale=3,
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color=BLACK,
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)
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sig_label.x = 30
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sig_label.y = 160
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screen.append(sig_label)
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# play text
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play_label = label.Label(
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terminalio.FONT, text=" play", scale=3, color=BLACK
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)
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play_label.x = 138
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play_label.y = 160
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screen.append(play_label)
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# footer line
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footer_line = Rect(0, 190, 240, 3, fill=GRAY, outline=None)
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screen.append(footer_line)
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# increment label
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increment_label = label.Label(
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terminalio.FONT, text="-1 +1", scale=3, color=GRAY
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)
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increment_label.x = 3
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increment_label.y = 220
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screen.append(increment_label)
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# show the screen
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clue.display.show(screen)
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def metronome(accent): # Play metronome sound and flash display
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clue.display.brightness = 0.5 # Dim the display slightly
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if accent == 1: # Put emphasis on downbeat
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if blink_light:
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clue.pixel.fill(YELLOW) # Flash the pixel
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simpleio.tone(board.SPEAKER, 1800, BEEP_DURATION)
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else: # All the other beats in the measure
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if blink_light:
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clue.pixel.fill(LT_TEAL) # Flash the pixel
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simpleio.tone(board.SPEAKER, 1200, BEEP_DURATION)
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if blink_light:
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clue.pixel.fill(0) # Turn off the pixel
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clue.display.brightness = 1.0 # Restore display to normal brightness
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time.sleep(0.2)
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tempo_increment = 1 # increment for tempo value setting
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feedback_mode = 0 # 0 is sound and visual, 1 is sound only, 2 is visual only
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running = False
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t0 = time.monotonic() # set start time
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while True:
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# play/pause
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if clue.button_b:
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if play_label.text == " play":
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play_label.text = "pause"
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else:
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play_label.text = " play"
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running = not running
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time.sleep(0.4)
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beat = 1 # start with downbeat
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# Time Signature change
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if clue.button_a:
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print("sig change")
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if time_signature == 4:
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time_signature = 3
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else:
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time_signature = 4
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sig_label.text = "{}/4".format(time_signature)
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time.sleep(0.4)
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beat = 1 # start with downbeat
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if running and (time.monotonic() - t0) >= delay:
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t0 = time.monotonic() # reset time before click to maintain accuracy
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metronome(beat)
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beat = beat - 1
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if beat == 0: # if the downbeat was just played, start at top of measure
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beat = time_signature
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# tempo changes
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if clue.touch_0:
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if tempo_increment is 1:
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tempo_increment = 10
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increment_label.text = "-10 +10"
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else:
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tempo_increment = 1
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increment_label.text = "-1 +1"
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time.sleep(0.2) # debounce
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if clue.touch_1:
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if tempo > 40:
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tempo = tempo - tempo_increment
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delay = 60 / tempo
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interval_label.text = "{} BPM".format(tempo)
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time.sleep(0.2) # debounce
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if clue.touch_2:
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if tempo < 330:
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tempo = tempo + tempo_increment
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delay = 60 / tempo
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interval_label.text = "{} BPM".format(tempo)
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time.sleep(0.2) # debounce
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