Merge pull request #1032 from adafruit/TheKitty-patch-118

CLUE Purse guide code

Author: ladyada

CLUE_Purse_Slideshow/code.py

@@ -0,0 +1,50 @@
+# Bright Wearables Purse Slideshow with FancyLED
+# Anne Barela for Adafruit Industries, February 2020
+# MIT License
+
+import board
+import adafruit_dotstar as dotstar
+from adafruit_clue import clue
+from adafruit_slideshow import SlideShow, PlayBackDirection
+import adafruit_fancyled.adafruit_fancyled as fancy
+
+# Set the LED ring speed and brightness
+LED_SPEED = 0.2   # pick a number from 0 (no motion) to 1.0 (fastest!)
+BRIGHTNESS = 0.2  # pick a number from 0 (dark) to 1.0 (bright!)
+
+# colors available are RED, YELLOW, ORANGE, GREEN, TEAL
+# CYAN, BLUE, PURPLE, MAGENTA, WHITE, BLACK, GOLD, PINK
+# AQUA, JADE, AMBER, VIOLET, SKY - pick any color set!
+# 3 to 5 colors looks best...
+palette = [clue.PINK, clue.GOLD, clue.JADE]
+
+# For the Bright Wearables DotStar LED Ring
+num_leds = 12
+pixels = dotstar.DotStar(board.P13, board.P15, num_leds, auto_write=False)
+offset = 0
+
+# Create the BMP displayer
+slideshow = SlideShow(clue.display, None, folder="/",
+                      auto_advance=False)
+
+# turn palette to fancytype
+for i, color in enumerate(palette):
+    palette[i] = fancy.CRGB(*[x / 255 for x in color])
+
+while True:
+    if clue.button_b:
+        slideshow.direction = PlayBackDirection.FORWARD
+        slideshow.advance()
+    if clue.button_a:
+        slideshow.direction = PlayBackDirection.BACKWARD
+        slideshow.advance()
+
+    # spin the LEDs
+    for i in range(num_leds):
+        # Load each pixel's color from the palette using an offset, run it
+        # through the gamma function, pack RGB value and assign to pixel.
+        color = fancy.palette_lookup(palette, offset + i / num_leds)
+        color = fancy.gamma_adjust(color, brightness=BRIGHTNESS)
+        pixels[i] = color.pack()
+    pixels.show()
+    offset += LED_SPEED / 10