Merge pull request adafruit#1026 from adafruit/itsybitsy_heart_necklace

Code for ItsyBitsy Heart Necklace

Author: ladyada

ItsyBitsy_Heart_Necklace/code.py

@@ -0,0 +1,103 @@
+import time
+import board
+import neopixel
+from adafruit_ble import BLERadio
+from adafruit_ble.advertising.standard import ProvideServicesAdvertisement
+from adafruit_ble.services.nordic import UARTService
+from adafruit_bluefruit_connect.packet import Packet
+from adafruit_bluefruit_connect.button_packet import ButtonPacket
+from adafruit_bluefruit_connect.color_packet import ColorPacket
+
+# NeoPixel strip data pin
+pixel_pin = board.D5
+
+# The number of NeoPixels
+num_pixels = 46
+
+# Increase or decrease between 0 and 1 to increase or decrease the brightness of the LEDs
+brightness = 0.1
+
+# The order of the pixel colors - RGB or GRB. Some NeoPixels have red and green reversed!
+ORDER = neopixel.GRB
+
+pixels = neopixel.NeoPixel(pixel_pin, num_pixels, brightness=brightness, auto_write=False,
+                           pixel_order=ORDER)
+# BLE Setup
+ble = BLERadio()
+uart_service = UARTService()
+advertisement = ProvideServicesAdvertisement(uart_service)
+
+#Wheel function for rainbows
+def wheel(pos):
+    # Input a value 0 to 255 to get a color value.
+    # The colours are a transition r - g - b - back to r.
+    if pos < 0 or pos > 255:
+        r = g = b = 0
+    elif pos < 85:
+        r = int(pos * 3)
+        g = int(255 - pos * 3)
+        b = 0
+    elif pos < 170:
+        pos -= 85
+        r = int(255 - pos * 3)
+        g = 0
+        b = int(pos * 3)
+    else:
+        pos -= 170
+        r = 0
+        g = int(pos * 3)
+        b = int(255 - pos * 3)
+    return (r, g, b) if ORDER in (neopixel.RGB, neopixel.GRB) else (r, g, b, 0)
+
+#Rainbow Swirl Animation
+def rainbow_swirl(wait):
+    for j in range(255):
+        for i in range(num_pixels):
+            pixel_index = (i * 256 // num_pixels) + j
+            pixels[i] = wheel(pixel_index & 255)
+        pixels.show()
+        time.sleep(wait)
+
+#Rainbow Fill Animation
+def rainbow_fill(wait):
+    for j in range(255):
+        for i in range(num_pixels):
+            pixel_index = int(i + j)
+            pixels[i] = wheel(pixel_index & 255)
+        pixels.show()
+        time.sleep(wait)
+
+# List of colors
+RED = (255, 0, 0)
+ORANGE = (255, 50, 0)
+BLACK = (0, 0, 0)
+GREEN = (0, 255, 0)
+PURPLE = (100, 0, 255)
+YELLOW = (255,230, 0)
+BLUE = (0, 0, 255)
+
+while True:
+    while ble.connected:
+        if uart_service.in_waiting:
+            if uart_service.in_waiting:
+                packet = Packet.from_stream(uart_service)
+            if isinstance(packet, ColorPacket):
+                # Set all the pixels to one color and stay there.
+                pixels.fill(packet.color)
+                pixels.show()
+            elif isinstance(packet, ButtonPacket):
+                if packet.pressed:
+                    if packet.button == ButtonPacket.BUTTON_1:
+                        pixels.fill(BLUE)
+                        pixels.show()
+                    elif packet.button == ButtonPacket.BUTTON_2:
+                        pixels.fill(RED)
+                        pixels.show()
+                    elif packet.button == ButtonPacket.BUTTON_3:
+                        rainbow_swirl(0.01)
+                        pixels.show()
+                    elif packet.button == ButtonPacket.BUTTON_4:
+                        rainbow_fill(0.001)
+                    elif packet.button == ButtonPacket.DOWN:
+                        pixels.fill(BLACK)
+                        pixels.show()