Merge branch 'master' of https://github.com/adafruit/Adafruit_CircuitPython_HT16K33 into modify_brightness_property

Author: =Dale Weber

.github/workflows/build.yml

@@ -34,9 +34,13 @@ jobs:
       with:
         repository: adafruit/actions-ci-circuitpython-libs
         path: actions-ci
-    - name: Install deps
+    - name: Install dependencies
+      # (e.g. - apt-get: gettext, etc; pip: circuitpython-build-tools, requirements.txt; etc.)
       run: |
         source actions-ci/install.sh
+    - name: Pip install pylint, black, & Sphinx
+      run: |
+        pip install --force-reinstall pylint==1.9.2 black==19.10b0 Sphinx sphinx-rtd-theme
     - name: Library version
       run: git describe --dirty --always --tags
     - name: PyLint

adafruit_ht16k33/segments.py

@@ -268,7 +268,7 @@ def set_digit_raw(self, index, bitmask):
             return
 
         if isinstance(bitmask, (tuple, list)):
-            bitmask = bitmask[0] << 8 | bitmask[1]
+            bitmask = ((bitmask[0] & 0xFF) << 8) | (bitmask[1] & 0xFF)
 
         # Set the digit bitmask value at the appropriate position.
         self._set_buffer(index * 2, bitmask & 0xFF)

examples/ht16k33_matrix_simpletest.py

@@ -19,7 +19,7 @@
 # This creates a 16x8 matrix:
 matrix = matrix.Matrix16x8(i2c)
 # Or this creates a 16x8 matrix backpack:
-# matrix = matrix.MatrixBackpack16x8(i2c)
+#matrix = matrix.MatrixBackpack16x8(i2c)
 # Or this creates a 8x8 matrix:
 #matrix = matrix.Matrix8x8(i2c)
 # Or this creates a 8x8 bicolor matrix:

examples/ht16k33_matrix_text_example.py

@@ -0,0 +1,45 @@
+# Basic example of using FrameBuffer to create and scroll text on the matrix.
+
+# Requires: adafruit_framebuf
+
+import board
+import busio
+import adafruit_framebuf
+
+# Import the HT16K33 LED matrix module.
+from adafruit_ht16k33 import matrix
+
+# Create the I2C interface.
+i2c = busio.I2C(board.SCL, board.SDA)
+
+# Create the matrix class.
+# This creates a 16x8 matrix:
+matrix = matrix.Matrix16x8(i2c)
+
+# Low brightness so it's easier to look at
+matrix.brightness = 0
+
+# Clear the matrix.
+matrix.fill(0)
+
+text_to_show = "Hello Blinka"
+
+# Create a framebuffer for our display
+buf = bytearray(16)  # 1 bytes tall x 16 wide = 16 bytes
+fb = adafruit_framebuf.FrameBuffer(buf, 16, 8, adafruit_framebuf.MVLSB)
+
+
+while True:
+    for i in range(len(text_to_show) * 8):
+        fb.fill(0)
+        fb.text(text_to_show, -i + 16, 0, color=1)
+        # turn all LEDs off
+        matrix.fill(0)
+        for x in range(16):
+            # using the FrameBuffer text result
+            bite = buf[x]
+            for y in range(8):
+                bit = 1 << y & bite
+                # if bit > 0 then set the pixel brightness
+                if bit:
+                    matrix[16-x, y+1] = 1