Merge pull request #29 from makermelissa/master

Added 8x16 LED Matrix FeatherWing

Author: kattni

adafruit_featherwing/matrix_featherwing.py

@@ -0,0 +1,193 @@
+# The MIT License (MIT)
+#
+# Copyright (c) 2019 Melissa LeBlanc-Williams for Adafruit Industries LLC
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+"""
+`adafruit_featherwing.matrix_featherwing`
+====================================================
+
+Helper for using the `Adafruit 8x16 LED Matrix FeatherWing
+<https://www.adafruit.com/product/3155>`_.
+
+* Author(s): Melissa LeBlanc-Williams
+"""
+
+__version__ = "0.0.0-auto.0"
+__repo__ = "https://github.com/adafruit/Adafruit_CircuitPython_FeatherWing.git"
+
+import adafruit_ht16k33.matrix as matrix
+from adafruit_featherwing import shared
+
+class MatrixFeatherWing:
+    """Class representing an `Adafruit 8x16 LED Matrix FeatherWing
+       <https://www.adafruit.com/product/3155>`_.
+
+       Automatically uses the feather's I2C bus."""
+    def __init__(self, address=0x70):
+        self._matrix = matrix.Matrix16x8(shared.I2C_BUS, address)
+        self._matrix.auto_write = False
+        self.columns = 16
+        self.rows = 8
+        self._auto_write = True
+
+    def __getitem__(self, key):
+        """
+        Get the current value of a pixel
+        """
+        x, y = key
+        return self.pixel(x, y)
+
+    def __setitem__(self, key, value):
+        """
+        Turn a pixel off or on
+        """
+        x, y = key
+        self.pixel(x, y, value)
+        self._update()
+
+    def _update(self):
+        """
+        Update the Display automatically if auto_write is set to True
+        """
+        if self._auto_write:
+            self._matrix.show()
+
+    def pixel(self, x, y, color=None):
+        """
+        Turn a pixel on or off or retrieve a pixel value
+
+        :param int x: The pixel row
+        :param int y: The pixel column
+        :param color: Whether to turn the pixel on or off
+        :type color: int or bool
+        """
+        value = self._matrix.pixel(x, y, color)
+        self._update()
+        return value
+
+    def show(self):
+        """
+        Update the Pixels. This is only needed if auto_write is set to False
+        This can be very useful for more advanced graphics effects.
+        """
+        self._matrix.show()
+
+    def fill(self, fill):
+        """
+        Turn all pixels on or off
+
+        :param bool fill: True turns all pixels on, False turns all pixels off
+
+        """
+        if isinstance(fill, bool):
+            self._matrix.fill(1 if fill else 0)
+            self._update()
+        else:
+            raise ValueError('Must set to either True or False.')
+
+    def shift_right(self, rotate=False):
+        """
+        Shift all pixels right
+
+        :param rotate: (Optional) Rotate the shifted pixels to the left side (default=False)
+        """
+        for y in range(0, self.rows):
+            last_pixel = self._matrix[self.columns - 1, y] if rotate else 0
+            for x in range(self.columns - 1, 0, -1):
+                self._matrix[x, y] = self._matrix[x - 1, y]
+            self._matrix[0, y] = last_pixel
+        self._update()
+
+    def shift_left(self, rotate=False):
+        """
+        Shift all pixels left
+
+        :param rotate: (Optional) Rotate the shifted pixels to the right side (default=False)
+        """
+        for y in range(0, self.rows):
+            last_pixel = self._matrix[0, y] if rotate else 0
+            for x in range(0, self.columns - 1):
+                self._matrix[x, y] = self._matrix[x + 1, y]
+            self._matrix[self.columns - 1, y] = last_pixel
+        self._update()
+
+    def shift_up(self, rotate=False):
+        """
+        Shift all pixels up
+
+        :param rotate: (Optional) Rotate the shifted pixels to bottom (default=False)
+        """
+        for x in range(0, self.columns):
+            last_pixel = self._matrix[x, self.rows - 1] if rotate else 0
+            for y in range(self.rows - 1, 0, -1):
+                self._matrix[x, y] = self._matrix[x, y - 1]
+            self._matrix[x, 0] = last_pixel
+        self._update()
+
+    def shift_down(self, rotate=False):
+        """
+        Shift all pixels down
+
+        :param rotate: (Optional) Rotate the shifted pixels to top (default=False)
+        """
+        for x in range(0, self.columns):
+            last_pixel = self._matrix[x, 0] if rotate else 0
+            for y in range(0, self.rows - 1):
+                self._matrix[x, y] = self._matrix[x, y + 1]
+            self._matrix[x, self.rows - 1] = last_pixel
+        self._update()
+
+    @property
+    def auto_write(self):
+        """
+        Whether or not we are automatically updating
+        If set to false, be sure to call show() to update
+        """
+        return self._auto_write
+
+    @auto_write.setter
+    def auto_write(self, write):
+        if isinstance(write, bool):
+            self._auto_write = write
+
+    @property
+    def blink_rate(self):
+        """
+        Blink Rate returns the current rate that the pixels blink.
+        0 = Not Blinking
+        1-3 = Successively slower blink rates
+        """
+        return self._matrix.blink_rate
+
+    @blink_rate.setter
+    def blink_rate(self, rate):
+        self._matrix.blink_rate = rate
+
+    @property
+    def brightness(self):
+        """
+        Brightness returns the current display brightness.
+        0-15 = Dimmest to Brightest Setting
+        """
+        return self._matrix.brightness
+
+    @brightness.setter
+    def brightness(self, brightness):
+        self._matrix.brightness = brightness

docs/api.rst

@@ -21,3 +21,6 @@
 
 .. automodule:: adafruit_featherwing.gps_featherwing
    :members:
+
+.. automodule:: adafruit_featherwing.matrix_featherwing
+   :members:

docs/examples.rst

@@ -35,6 +35,10 @@ Ensure your device works with this simple test.
     :caption: examples/featherwing_gps_simpletest.py
     :linenos:
 
+.. literalinclude:: ../examples/featherwing_matrix_simpletest.py
+    :caption: examples/featherwing_matrix_simpletest.py
+    :linenos:
+
 Other Tests
 ------------
 

examples/featherwing_matrix_simpletest.py

@@ -0,0 +1,63 @@
+"""
+This example will demonstrate some graphic effects and then
+draw a smiley face and shift it around the display
+"""
+import time
+from adafruit_featherwing import matrix_featherwing
+
+matrix = matrix_featherwing.MatrixFeatherWing()
+
+# Create a Fade-in Effect
+matrix.brightness = 0
+matrix.fill(True)
+for level in range(0, 16):
+    matrix.brightness = level
+    time.sleep(0.1)
+
+# Show the different Blink Rates
+for level in range(3, -1, -1):
+    matrix.blink_rate = level
+    time.sleep(4)
+
+# Create a Fade-out Effect
+for level in range(15, -1, -1):
+    matrix.brightness = level
+    time.sleep(0.1)
+matrix.fill(False)
+
+# Reset the brightness to full
+matrix.brightness = 15
+
+# Clear the Screen
+matrix.fill(False)
+
+# Draw a Smiley Face
+for row in range(2, 6):
+    matrix[row, 0] = 1
+    matrix[row, 7] = 1
+
+for column in range(2, 6):
+    matrix[0, column] = 1
+    matrix[7, column] = 1
+
+matrix[1, 1] = 1
+matrix[1, 6] = 1
+matrix[6, 1] = 1
+matrix[6, 6] = 1
+matrix[2, 5] = 1
+matrix[5, 5] = 1
+matrix[2, 3] = 1
+matrix[5, 3] = 1
+matrix[3, 2] = 1
+matrix[4, 2] = 1
+
+# Move the Smiley Face Around
+while True:
+    for frame in range(0, 8):
+        matrix.shift_right()
+    for frame in range(0, 8):
+        matrix.shift_down(True)
+    for frame in range(0, 8):
+        matrix.shift_left()
+    for frame in range(0, 8):
+        matrix.shift_up(True)