Merge pull request #18 from mcarlson/fix_glitching

Update default delay to 300 microseconds per Adafruit

neopixel.py

@@ -73,7 +73,7 @@ class Neopixel:
     #    'brightnessvalue', # brightness scale factor 1..255
     # ]
 
-    def __init__(self, num_leds, state_machine, pin, mode="RGB", delay=0.0001):
+    def __init__(self, num_leds, state_machine, pin, mode="RGB", delay=0.0003):
         """
         Constructor for library class
 
@@ -229,14 +229,29 @@ class Neopixel:
         npix[15:21] = (255,0,0)     # <- sets 16,17 .. 20 to red
         npix[21:29:2] = (0,0,255)   # <- sets 21,23,25,27 to blue
         npix[1::2] = (0,0,0)        # <- sets all odd pixels to 'off'
+        npix[:] = [(0,5,0),(0,5,0)] # <- replaces all pixels with those from the array
         (the 'slice' cases pass idx as a 'slice' object, and
         set_pixel processes the slice)
 
         :param idx: Index can either be indexing number or slice
-        :param rgb_w: Tuple of form (r, g, b) or (r, g, b, w) representing color to be used
-        :return:
+        :param rgb_w: Tuple (or list of tuples) of form (r, g, b) or (r, g, b, w) representing color to be used
+        :return: None
         """
-        self.set_pixel(idx, rgb_w)
+        if type(rgb_w) is list:
+            # set some subset, if idx is a slice:
+            if type(idx) is slice:
+                for rgb_i, pixel_i in enumerate(range(*idx.indices(self.num_leds))):
+                    self.set_pixel(pixel_i, rgb_w[rgb_i])
+            else:
+                raise ValueError("Index must be a slice when setting multiple pixels as list")
+        else:
+            self.set_pixel(idx, rgb_w)
+
+    def __len__(self):
+        return self.num_leds
+
+    def __getitem__(self, idx):
+        return self.get_pixel(idx)
 
     def colorHSV(self, hue, sat, val):
         """
@@ -326,9 +341,9 @@ class Neopixel:
         cut = 8
         if self.W_in_mode:
             cut = 0
-        sm_put = self.sm.put
-        for pixval in self.pixels:
-            sm_put(pixval, cut)
+        
+        self.sm.put(self.pixels, cut)
+
         time.sleep(self.delay)
 
     def fill(self, rgb_w, how_bright=None):