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ladyadaladyada
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Merge pull request #1080 from jepler/cpy-rgbmatrix
CircuitPython RGBMatrix demo programs
2 parents 2f2fd55 + 2d06fa0 commit 2aff72d

5 files changed

Lines changed: 274 additions & 2 deletions

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‎CircuitPython_RGBMatrix/emoji.bmp‎

28.3 KB
Binary file not shown.

‎CircuitPython_RGBMatrix/fruit.py‎

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import random
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import time
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import board
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import displayio
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import framebufferio
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import rgbmatrix
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displayio.release_displays()
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matrix = rgbmatrix.RGBMatrix(
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width=64, height=32, bit_depth=3,
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rgb_pins=[board.D6, board.D5, board.D9, board.D11, board.D10, board.D12],
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addr_pins=[board.A5, board.A4, board.A3, board.A2],
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clock_pin=board.D13, latch_pin=board.D0, output_enable_pin=board.D1)
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display = framebufferio.FramebufferDisplay(matrix, auto_refresh=False)
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bitmap_file = open("emoji.bmp", 'rb')
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bitmap = displayio.OnDiskBitmap(bitmap_file)
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STOPPED, RUNNING, BRAKING = range(3)
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def shuffled(seq):
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return sorted(seq, key=lambda _: random.random())
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class Strip(displayio.TileGrid):
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def __init__(self):
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super().__init__(bitmap=bitmap, pixel_shader=displayio.ColorConverter(),
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width=1, height=4, tile_width=20, tile_height=24)
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self.order = shuffled(range(20))
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self.state = STOPPED
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self.pos = 0
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self.vel = 0
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self.y = 0
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self.x = 0
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self.stop_time = time.monotonic_ns()
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def step(self):
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if self.state == RUNNING:
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self.vel = max(self.vel * 9 // 10, 64)
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if time.monotonic_ns() > self.stop_time:
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self.state = BRAKING
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elif self.state == BRAKING:
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self.vel = max(self.vel * 85 // 100, 7)
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self.pos = (self.pos + self.vel) % 7680
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yy = round(self.pos / 16)
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yyy = yy % 24
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off = yy // 24
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if self.state == BRAKING and self.vel == 7 and yyy < 4:
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self.pos = off * 24 * 16
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self.vel = 0
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yy = 0
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self.state = STOPPED
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self.y = yy % 24 - 20
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for i in range(4):
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self[i] = self.order[(19 - i + off) % 20]
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def kick(self, i):
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self.state = RUNNING
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self.vel = random.randint(256, 320)
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self.stop_time = time.monotonic_ns() + 3000000000 + i * 350000000
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def brake(self):
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self.state = BRAKING
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g = displayio.Group(max_size=3)
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strips = []
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for idx in range(3):
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strip = Strip()
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strip.x = idx * 22
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strip.y = -20
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g.append(strip)
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strips.append(strip)
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display.show(g)
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orders = [shuffled(range(20)), shuffled(range(20)), shuffled(range(20))]
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for si, oi in zip(strips, orders):
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for idx in range(4):
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si[idx] = oi[idx]
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def all_stopped():
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return all(si.state == STOPPED for si in strips)
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for idx, si in enumerate(strips):
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si.kick(idx)
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while True:
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display.refresh(minimum_frames_per_second=0)
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if all_stopped():
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for idx in range(100):
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display.refresh(minimum_frames_per_second=0)
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for idx, si in enumerate(strips):
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si.kick(idx)
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for idx, si in enumerate(strips):
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si.step()

‎CircuitPython_RGBMatrix/life.py‎

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import random
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import time
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import board
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import displayio
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import framebufferio
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import rgbmatrix
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displayio.release_displays()
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def apply_life_rule(old, new):
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width = old.width
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height = old.height
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for y in range(height):
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yyy = y * width
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ym1 = ((y + height - 1) % height) * width
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yp1 = ((y + 1) % height) * width
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xm1 = width - 1
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for x in range(width):
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xp1 = (x + 1) % width
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neighbors = (
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old[xm1 + ym1] + old[xm1 + yyy] + old[xm1 + yp1] +
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old[x + ym1] + old[x + yp1] +
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old[xp1 + ym1] + old[xp1 + yyy] + old[xp1 + yp1])
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new[x+yyy] = neighbors == 3 or (neighbors == 2 and old[x+yyy])
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xm1 = x
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def randomize(output, fraction=0.50):
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for i in range(output.height * output.width):
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output[i] = random.random() < fraction
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# after xkcd's tribute to John Conway (1937-2020) https://xkcd.com/2293/
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conway_data = [
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b' +++ ',
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b' + + ',
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b' + + ',
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b' + ',
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b'+ +++ ',
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b' + + + ',
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b' + + ',
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b' + + ',
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b' + + ',
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]
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def conway(output):
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for i in range(output.height * output.width):
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output[i] = 0
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for i, si in enumerate(conway_data):
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y = output.height - len(conway_data) - 2 + i
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for j, cj in enumerate(si):
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output[(output.width - 8)//2 + j, y] = cj & 1
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matrix = rgbmatrix.RGBMatrix(
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width=64, height=32, bit_depth=1,
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rgb_pins=[board.D6, board.D5, board.D9, board.D11, board.D10, board.D12],
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addr_pins=[board.A5, board.A4, board.A3, board.A2],
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clock_pin=board.D13, latch_pin=board.D0, output_enable_pin=board.D1)
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display = framebufferio.FramebufferDisplay(matrix, auto_refresh=False)
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SCALE = 1
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b1 = displayio.Bitmap(display.width//SCALE, display.height//SCALE, 2)
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b2 = displayio.Bitmap(display.width//SCALE, display.height//SCALE, 2)
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palette = displayio.Palette(2)
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tg1 = displayio.TileGrid(b1, pixel_shader=palette)
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tg2 = displayio.TileGrid(b2, pixel_shader=palette)
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g1 = displayio.Group(max_size=3, scale=SCALE)
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g1.append(tg1)
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display.show(g1)
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g2 = displayio.Group(max_size=3, scale=SCALE)
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g2.append(tg2)
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palette[1] = 0xffffff
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conway(b1)
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display.auto_refresh = True
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time.sleep(3)
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n = 40
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while True:
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for _ in range(n):
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display.show(g1)
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apply_life_rule(b1, b2)
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display.show(g2)
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apply_life_rule(b2, b1)
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randomize(b1)
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palette[0] = 0
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palette[1] = (
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(0x0000ff if random.random() > .33 else 0) |
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(0x00ff00 if random.random() > .33 else 0) |
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(0xff0000 if random.random() > .33 else 0)) or 0xffffff
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n = 200

‎CircuitPython_RGBMatrix/scroller.py‎

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import array
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from _pixelbuf import wheel
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import board
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import displayio
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import framebufferio
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import rgbmatrix
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import terminalio
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displayio.release_displays()
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matrix = rgbmatrix.RGBMatrix(
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width=64, height=32, bit_depth=3,
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rgb_pins=[board.D6, board.D5, board.D9, board.D11, board.D10, board.D12],
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addr_pins=[board.A5, board.A4, board.A3, board.A2],
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clock_pin=board.D13, latch_pin=board.D0, output_enable_pin=board.D1)
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display = framebufferio.FramebufferDisplay(matrix, auto_refresh=False)
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def tilegrid(palette):
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return displayio.TileGrid(
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bitmap=terminalio.FONT.bitmap, pixel_shader=palette,
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width=1, height=1, tile_width=6, tile_height=14, default_tile=32)
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g = displayio.Group(max_size=2)
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linelen = (64//7)+2
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l1 = displayio.Group(max_size=linelen)
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l2 = displayio.Group(max_size=linelen)
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g.append(l1)
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g.append(l2)
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display.show(g)
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l1.y = 1
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l2.y = 16
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sh = [displayio.Palette(2) for _ in range(linelen)]
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tg1 = [tilegrid(shi) for shi in sh]
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tg2 = [tilegrid(shi) for shi in sh]
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charmap = array.array('b', [terminalio.FONT.get_glyph(32).tile_index]) * 256
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for ch in range(256):
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glyph = terminalio.FONT.get_glyph(ch)
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if glyph is not None:
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charmap[ch] = glyph.tile_index
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for idx, gi in enumerate(tg1):
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gi.x = 7 * idx
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l1.append(gi)
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for idx, gi in enumerate(tg2):
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gi.x = 7 * idx
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l2.append(gi)
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lines = [
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b"This scroller is brought to you by CircuitPython & PROTOMATTER",
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b" .... . .-.. .-.. --- / .--. .-. --- - --- -- .- - - . .-.",
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b"Greetz to ... @PaintYourDragon @v923z @adafruit ",
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b" @danh @ladyada @kattni @tannewt all showers & tellers",
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b"New York Strong Wash Your Hands ",
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b" Flatten the curve Stronger Together",
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]
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even_lines = lines[0::2]
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odd_lines = lines[1::2]
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def scroll(t, b):
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sp = b' ' * linelen
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t = sp + t + sp
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b = sp + b + sp
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maxlen = max(len(t), len(b))
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for i in range(maxlen-linelen):
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for j in range(linelen):
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sh[j][1] = wheel(3 * (2*i+j))
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tg1[j][0] = charmap[t[i+j]]
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tg2[j][0] = charmap[b[i+j]]
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for j in range(7):
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l1.x = -j
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l2.x = -j
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display.refresh(minimum_frames_per_second=0)
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#display.refresh(minimum_frames_per_second=0)
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while True:
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for e, o in zip(even_lines, odd_lines):
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scroll(e, o)

‎pylint_check‎

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#!/bin/bash
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PYLINT="`type -p pylint3 2>/dev/null || type -p pylint`"
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function find_pyfiles() {
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for f in $(find . -type f -iname '*.py'); do
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if [ $# -eq 0 ]; then set -- .; fi
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for f in $(find "$@" -type f -iname '*.py'); do
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if [ ! -e "$(dirname $f)/.circuitpython.skip" ]; then
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echo "$f"
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fi
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done
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}
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find_pyfiles | xargs pylint
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find_pyfiles "$@" | xargs "$PYLINT"

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