different approach

Author: caternuson

examples/neopixel_spi_simpletest.py

@@ -1 +1,23 @@
-"""Eventual example for NeoPixel SPI"""
+import time
+import board
+import neopixel_spi as neopixel
+
+NUM_PIXELS = 12
+PIXEL_ORDER = neopixel.GRB
+COLORS = (0xFF0000, 0x00FF00, 0x0000FF)
+DELAY = 0.1
+
+spi = board.SPI()
+
+pixels = neopixel.NeoPixel_SPI(spi,
+                               NUM_PIXELS,
+                               pixel_order=PIXEL_ORDER,
+                               auto_write=False)
+
+while True:
+    for color in COLORS:
+        for i in range(NUM_PIXELS):
+            pixels[i] = color
+            pixels.show()
+            time.sleep(DELAY)
+            pixels.fill(0)

faux_write.py

@@ -43,8 +43,16 @@
 * Adafruit's Bus Device library: https://github.com/adafruit/Adafruit_CircuitPython_BusDevice
 """
 
+# The following creates a mock neopixel_write module to allow importing
+# the CircuitPython NeoPixel module without actually providing neopixel_write.
+#pylint: disable=wrong-import-position
 import sys
-sys.modules['neopixel_write'] = __import__('faux_write')
+from types import ModuleType
+mock_neopixel_write = ModuleType('mock_neopixel_write')
+exec('def neopixel_write(): pass', mock_neopixel_write.__dict__)
+sys.modules['neopixel_write'] = mock_neopixel_write
+#pylint: enable=wrong-import-position
+
 from neopixel import NeoPixel
 
 __version__ = "0.0.0-auto.0"
@@ -60,6 +68,12 @@
 GRBW = (1, 0, 2, 3)
 """Green Red Blue White"""
 
+def neopixel_write():
+    """This is a stub function to satisfy the base NeoPixel library.
+       It should never be called.
+    """
+    raise RuntimeError("Function should never be called.")
+
 class NeoPixel_SPI(NeoPixel):
     """
     A sequence of neopixels.