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68 lines
2.3 KiB
68 lines
2.3 KiB
# Library containing the class interface to create a new LED light display.
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import board
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import neopixel
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from PIL import Image
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from adafruit_pixel_framebuf import PixelFramebuffer
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import time
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import argparse
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class LightDisplay:
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def __init__(self, x=8, y=8, orientation="vertical", color="red", speed=1):
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self.x = x
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self.y = y
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self.orientation = orientation
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self.color = color
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self.speed = speed
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def display(self, message="Hello World"):
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# Init variables
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gpio_pin = board.D18
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pixel_width = self.x
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scroll_width = pixel_width + 1
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pixel_height = self.y
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scroll_height = pixel_height + 1
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pixel_max = pixel_width * pixel_height - 1
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led_message = self.message
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# Process arguments
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parser = argparse.ArgumentParser()
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parser.add_argument('-c', '--clear', action='store_true', help='clear the display on exit')
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args = parser.parse_args()
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# Create NeoPixel object with appropriate configuration.
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neo_pixel = neopixel.NeoPixel(gpio_pin, pixel_width * pixel_height, brightness=0.1, auto_write=False)
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#Create PixelFramebuffer object with appropriate configuration.
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pixel_framebuf = PixelFramebuffer(neo_pixel, pixel_width, pixel_height, reverse_x=True,alternating=True)
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print ('Press Ctrl-C to quit.')
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if not args.clear:
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print('Use "-c" argument to clear LEDs on exit')
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try:
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while True:
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led_message_len = len(led_message)
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led_message_scroll_height = led_message_len * 16
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for led_scroll in range(0, led_message_scroll_height , 1):
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led_char_counter = 1
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pixel_framebuf.fill(0x000000)
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# pixel_framebuf.display()
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for led_char in led_message:
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led_char_spacing = 8 * led_char_counter
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led_char_pos = pixel_height - led_scroll + led_char_spacing
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pixel_framebuf.text(led_char, 0, led_char_pos , 0x00FF00)
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led_char_counter += 1
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pixel_framebuf.display()
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time.sleep(25/500)
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except KeyboardInterrupt:
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if args.clear:
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neo_pixel.deinit()
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