Add lightbox code

Author: dastels

lightbox/code.py

@@ -0,0 +1,40 @@
+"""
+Lightbox driver program.
+
+Adafruit invests time and resources providing this open source code.
+Please support Adafruit and open source hardware by purchasing
+products from Adafruit!
+
+Written by Dave Astels for Adafruit Industries
+Copyright (c) 2018 Adafruit Industries
+Licensed under the MIT license.
+
+All text above must be included in any redistribution.
+"""
+
+import board
+import neopixel
+from adafruit_ble.uart import UARTServer
+from adafruit_bluefruit_connect.packet import Packet
+from adafruit_bluefruit_connect.color_packet import ColorPacket
+
+pixel_pin = board.A0
+num_pixels = 20
+
+pixels = neopixel.NeoPixel(pixel_pin, num_pixels)
+
+uart_server = UARTServer()
+
+while True:
+    uart_server.start_advertising()
+    while not uart_server.connected:
+        pass
+
+    # Now we're connected
+
+    while uart_server.connected:
+        if uart_server.in_waiting:
+            packet = Packet.from_stream(uart_server)
+            if isinstance(packet, ColorPacket):
+                # Change the NeoPixel color.
+                pixels.fill(packet.color)