Merge pull request #24 from CedarGroveStudios/master

Add support for Crickit's on-board NeoPixel

Author: ladyada

README.rst

@@ -58,7 +58,7 @@ Usage Example
 This examples shows how to control all the devices supported by the library.
 In most cases you just need a couple of imports.
 
-.. code-block :: python
+.. code-block:: python
 
   # This is a mock example showing typical usage of the library for each kind of device.
 
@@ -103,6 +103,11 @@ In most cases you just need a couple of imports.
   crickit.init_neopixel(8)
   crickit.neopixel.fill((100, 100, 100))
 
+  # Set the Crickit's on-board NeoPixel to a dim purple.
+  crickit.onboard_pixel.brightness = 0.01
+  crickit.onboard_pixel[0] = (255, 24, 255)
+  # or
+  crickit.onboard_pixel.fill((255, 24, 255))
 
 Contributing
 ============

adafruit_crickit.py

@@ -93,6 +93,7 @@
 _TOUCH4 = const(7)
 
 _NEOPIXEL = const(20)
+_SS_PIXEL = const(27)
 
 #pylint: disable=too-few-public-methods
 class CrickitTouchIn:
@@ -164,6 +165,7 @@ def __init__(self, seesaw):
         # Used to find existing devices.
         self._devices = dict()
         self._neopixel = None
+        self._onboard_pixel = None
 
     @property
     def seesaw(self):
@@ -369,6 +371,19 @@ def init_neopixel(self, n, *, bpp=3, brightness=1.0, auto_write=True, pixel_orde
                                   brightness=brightness, auto_write=auto_write,
                                   pixel_order=pixel_order)
 
+    @property
+    def onboard_pixel(self):
+        """```adafruit_seesaw.neopixel`` object on the Seesaw on-board NeoPixel.
+        Initialize on-board NeoPixel and clear upon first use.
+        """
+        if not self._onboard_pixel:
+            from adafruit_seesaw.neopixel import NeoPixel
+            self._onboard_pixel = NeoPixel(self._seesaw, _SS_PIXEL, 1, bpp=3,
+                                           brightness=1.0, auto_write=True,
+                                           pixel_order=None)
+            self._onboard_pixel.fill((0, 0, 0))
+        return self._onboard_pixel
+
     def reset(self):
         """Reset the whole Crickit board."""
         self._seesaw.sw_reset()