2 files changed, 160 insertions, 7 deletions
diff --git a/src/compileAndRun/pythonSupportFiles/LuxcenaNeo/Strip.py b/src/compileAndRun/pythonSupportFiles/LuxcenaNeo/Strip.py
index c4ac8c9..f5beaa4 100644
--- a/src/compileAndRun/pythonSupportFiles/LuxcenaNeo/Strip.py
+++ b/src/compileAndRun/pythonSupportFiles/LuxcenaNeo/Strip.py
@@ -1,6 +1,161 @@
+#from neopixel import *
+import atexit
+import _rpi_ws281x as ws
+
 class Strip:
 
-    def __init__(self, segments, segmentConfiguration):
-        self.segments = segments
-        self.segmentConfiguration = segmentConfiguration
-        return
+    def __init__(self, stripConf):
+		"""Class to represent a NeoPixel/WS281x LED display.  Num should be the
+		number of pixels in the display, and pin should be the GPIO pin connected
+		to the display signal line (must be a PWM pin like 18!).  Optional
+		parameters are freq, the frequency of the display signal in hertz (default
+		800khz), dma, the DMA channel to use (default 10), invert, a boolean
+		specifying if the signal line should be inverted (default False), and
+		channel, the PWM channel to use (defaults to 0).
+		"""
+        self.SEGMENTS = stripConf["segments"]
+        self.SEGMENT_CONFIG = stripConf["segment_config"]
+
+        self.LED_FREQ_HZ = stripConf["led_freq_hz"]  # LED signal frequency in hertz (usually 800khz)
+        self.LED_CHANNEL = stripConf["led_channel"]  # Set to '1' for GPIOs 13, 19, 41, 45, 53
+        self.LED_INVERT = stripConf["led_invert"]    # True to invert the signal, (when using NPN transistor level shift)
+        self.LED_PIN = stripConf["led_pin"]          # 18 uses PWM, 10 uses SPI /dev/spidev0.0
+        self.LED_DMA = stripConf["led_dma"]          # DMA channel for generating the signal, on the newer ones, try 10
+        self.LED_COUNT = sum(self.SEGMENTS)          # Number of LEDs in strip
+
+
+        self.LED_BRIGHTNESS = 255
+
+		# Create ws2811_t structure and fill in parameters.
+		self._leds = ws.new_ws2811_t()
+
+		# Initialize the channels to zero
+		for channum in range(2):
+			chan = ws.ws2811_channel_get(self._leds, channum)
+			ws.ws2811_channel_t_count_set(chan, 0)
+			ws.ws2811_channel_t_gpionum_set(chan, 0)
+			ws.ws2811_channel_t_invert_set(chan, 0)
+			ws.ws2811_channel_t_brightness_set(chan, 0)
+
+		# Initialize the channel in use
+		self._channel = ws.ws2811_channel_get(self._leds, channel)
+		ws.ws2811_channel_t_count_set(self._channel, num)
+		ws.ws2811_channel_t_gpionum_set(self._channel, pin)
+		ws.ws2811_channel_t_invert_set(self._channel, 0 if not invert else 1)
+		ws.ws2811_channel_t_brightness_set(self._channel, brightness)
+		ws.ws2811_channel_t_strip_type_set(self._channel, strip_type)
+
+		# Initialize the controller
+		ws.ws2811_t_freq_set(self._leds, freq_hz)
+		ws.ws2811_t_dmanum_set(self._leds, dma)
+
+		# Grab the led data array.
+		self._led_data = _LED_Data(self._channel, num)
+
+		# Substitute for __del__, traps an exit condition and cleans up properly
+		atexit.register(self._cleanup)
+        
+    def _cleanup(self):
+		# Clean up memory used by the library when not needed anymore.
+		if self._leds is not None:
+			ws.delete_ws2811_t(self._leds)
+			self._leds = None
+			self._channel = None
+
+	def begin(self):
+		"""Initialize library, must be called once before other functions are
+		called.
+		"""
+		resp = ws.ws2811_init(self._leds)
+		if resp != ws.WS2811_SUCCESS:
+			message = ws.ws2811_get_return_t_str(resp)
+			raise RuntimeError('ws2811_init failed with code {0} ({1})'.format(resp, message))
+
+	def show(self):
+		"""Update the display with the data from the LED buffer."""
+		resp = ws.ws2811_render(self._leds)
+		if resp != ws.WS2811_SUCCESS:
+			message = ws.ws2811_get_return_t_str(resp)
+			raise RuntimeError('ws2811_render failed with code {0} ({1})'.format(resp, message))
+
+	def setPixelColor(self, n, color):
+		"""Set LED at position n to the provided 24-bit color value (in RGB order).
+		"""
+		self._led_data[n] = color
+
+	def setPixelColorRGB(self, n, red, green, blue, white = 0):
+		"""Set LED at position n to the provided red, green, and blue color.
+		Each color component should be a value from 0 to 255 (where 0 is the
+		lowest intensity and 255 is the highest intensity).
+		"""
+		self.setPixelColor(n, Color(red, green, blue, white))
+
+	def setBrightness(self, brightness):
+		"""Scale each LED in the buffer by the provided brightness.  A brightness
+		of 0 is the darkest and 255 is the brightest.
+		"""
+		ws.ws2811_channel_t_brightness_set(self._channel, brightness)
+
+	def getBrightness(self):
+		"""Get the brightness value for each LED in the buffer. A brightness
+		of 0 is the darkest and 255 is the brightest.
+		"""
+		return ws.ws2811_channel_t_brightness_get(self._channel)
+
+	def getPixels(self):
+		"""Return an object which allows access to the LED display data as if
+		it were a sequence of 24-bit RGB values.
+		"""
+		return self._led_data
+
+	def numPixels(self):
+		"""Return the number of pixels in the display."""
+		return ws.ws2811_channel_t_count_get(self._channel)
+
+	def getPixelColor(self, n):
+		"""Get the 24-bit RGB color value for the LED at position n."""
+		return self._led_data[n]
+
+
+def Color(red, green, blue, white = 0):
+	"""Convert the provided red, green, blue color to a 24-bit color value.
+	Each color component should be a value 0-255 where 0 is the lowest intensity
+	and 255 is the highest intensity.
+	"""
+	return (white << 24) | (red << 16)| (green << 8) | blue
+
+
+class _LED_Data(object):
+	"""Wrapper class which makes a SWIG LED color data array look and feel like
+	a Python list of integers.
+	"""
+	def __init__(self, channel, size):
+		self.size = size
+		self.channel = channel
+
+	def __getitem__(self, pos):
+		"""Return the 24-bit RGB color value at the provided position or slice
+		of positions.
+		"""
+		# Handle if a slice of positions are passed in by grabbing all the values
+		# and returning them in a list.
+		if isinstance(pos, slice):
+			return [ws.ws2811_led_get(self.channel, n) for n in xrange(*pos.indices(self.size))]
+		# Else assume the passed in value is a number to the position.
+		else:
+			return ws.ws2811_led_get(self.channel, pos)
+
+	def __setitem__(self, pos, value):
+		"""Set the 24-bit RGB color value at the provided position or slice of
+		positions.
+		"""
+		# Handle if a slice of positions are passed in by setting the appropriate
+		# LED data values to the provided values.
+		if isinstance(pos, slice):
+			index = 0
+			for n in xrange(*pos.indices(self.size)):
+				ws.ws2811_led_set(self.channel, n, value[index])
+				index += 1
+		# Else assume the passed in value is a number to the position.
+		else:
+			return ws.ws2811_led_set(self.channel, pos, value)
diff --git a/src/compileAndRun/pythonSupportFiles/entry.py b/src/compileAndRun/pythonSupportFiles/entry.py
index 4ba1031..3dab945 100644
--- a/src/compileAndRun/pythonSupportFiles/entry.py
+++ b/src/compileAndRun/pythonSupportFiles/entry.py
@@ -49,14 +49,12 @@ def main():
     print ("> Loading pixel-configuration...")
     with open(config_dir + "strip.json", "r") as rawStripConf:
         stripConf = json.load(rawStripConf)
-        segments = stripConf["segments"]
-        segmentConfiguration = stripConf["segmentConfiguration"]
 
     print ("> Initializing script...")
     moduleSc = importlib.import_module("script")
 
     if ("LuxcenaNeo" in dir(moduleSc)):
-        moduleSc.LuxcenaNeo.strip = moduleSc.LuxcenaNeo.Strip(segments, segmentConfiguration)
+        moduleSc.LuxcenaNeo.strip = moduleSc.LuxcenaNeo.Strip(stripConf)
     elif ("neo" in dir(moduleSc)):
         moduleSc.neo.strip = moduleSc.neo.Strip(segments, segmentConfiguration)
     else: