Minor updates

led_display.py

@@ -0,0 +1,67 @@
+# Library containing the class interface to create a new LED light display.
+
+import board
+import neopixel
+from PIL import Image
+from adafruit_pixel_framebuf import PixelFramebuffer
+import time
+import argparse
+
+
+class LightDisplay:
+    def __init__(self, x=8, y=8, orientation="vertical", color="red", speed=1):
+        self.x = x
+        self.y = y
+        self.orientation = orientation
+        self.color = color
+        self.speed = speed
+
+    def display(self, message="Hello World"):
+        # Init variables
+        gpio_pin = board.D18
+        pixel_width = self.x
+        scroll_width = pixel_width + 1
+        pixel_height = self.y
+        scroll_height = pixel_height + 1
+        pixel_max = pixel_width * pixel_height - 1
+        led_message = self.message 
+
+        # Process arguments
+        parser = argparse.ArgumentParser()
+        parser.add_argument('-c', '--clear', action='store_true', help='clear the display on exit')
+        args = parser.parse_args()
+
+        # Create NeoPixel object with appropriate configuration.
+        neo_pixel = neopixel.NeoPixel(gpio_pin, pixel_width * pixel_height, brightness=0.1, auto_write=False)
+
+        #Create PixelFramebuffer object with appropriate configuration.
+        pixel_framebuf = PixelFramebuffer(neo_pixel, pixel_width, pixel_height, reverse_x=True,alternating=True)
+
+        print ('Press Ctrl-C to quit.')
+
+        if not args.clear:
+            print('Use "-c" argument to clear LEDs on exit')
+
+        try:
+            while True:
+                led_message_len = len(led_message)
+                led_message_scroll_height = led_message_len * 16
+
+                for led_scroll in range(0, led_message_scroll_height , 1):
+                    led_char_counter = 1
+                    pixel_framebuf.fill(0x000000)
+                   # pixel_framebuf.display()
+                
+                    for led_char in led_message:
+                        led_char_spacing = 8 * led_char_counter
+                        led_char_pos = pixel_height - led_scroll + led_char_spacing
+                        pixel_framebuf.text(led_char, 0, led_char_pos , 0x00FF00)
+                        led_char_counter += 1
+
+                    pixel_framebuf.display()
+                    time.sleep(25/500)
+
+        except KeyboardInterrupt:
+            if args.clear:
+                neo_pixel.deinit()
+

vp_test.py

@@ -0,0 +1,14 @@
+#!/usr/bin/python3
+
+from led_display import LightDisplay
+
+def main():
+    led_test = LightDisplay(8, 16, "blue", 2)
+    print(led_test.color)
+    print(led_test.x)
+    print(led_test.y)
+    print(led_test.speed + '\n\n\n')
+    led_test.display("Print this message")
+
+if __name__ == "__main__":
+    main()