Add brightness getter/setter.

adafruit_neotrellis/multitrellis.py

@@ -1,16 +1,37 @@
-# SPDX-FileCopyrightText: 2018 Dean Miller for Adafruit Industries
+# SPDX-FileCopyrightText: 2021 Dean Miller for Adafruit Industries
 #
 # SPDX-License-Identifier: MIT
 
 """
-Interface for connecting together multiple NeoTrellis boards.
-"""
+``adafruit_multitrellis``
+====================================================
+
+A CircuitPython driver class for interfacing clusters of 4x4 NeoTrellis with
+elastomer buttons and NeoPixel RGB LEDs.
+
+* Author(s): Dean Miller, JG for CedarGroveMakerStudios
+
+Implementation Notes
+--------------------
+
+**Hardware:**
+
+* 'NeoTrellis RGB Driver PCB for 4x4 Keypad, PID: 3954
+  <https://www.adafruit.com/product/3954>'
 
-# imports
+**Software and Dependencies:**
+
+* Adafruit CircuitPython firmware for the supported boards:
+  https://github.com/adafruit/circuitpython/releases
+
+* Adafruit Seesaw CircuitPython library
+  https://github.com/adafruit/Adafruit_CircuitPython_seesaw/releases
+"""
 
 __version__ = "0.0.0-auto.0"
 __repo__ = "https://github.com/adafruit/Adafruit_CircuitPython_neotrellis.git"
 
+
 from time import sleep
 from micropython import const
 from adafruit_seesaw.keypad import KeyEvent
@@ -78,3 +99,17 @@ def sync(self):
                             y = int(evt.number / 4) + _n * 4
                             x = int(evt.number % 4) + _m * 4
                             _t.callbacks[evt.number](x, y, evt.edge)
+
+    @property
+    def brightness(self):
+        """The NeoPixel brightness level of all clustered NeoTrellis boards."""
+        return self._brightness
+
+    @brightness.setter
+    def brightness(self, new_brightness):
+        """Select a NeoPixel brightness level for all all clustered boards. A
+        valid brightness value is in the range of 0.0 to 1.0."""
+        self._brightness = new_brightness
+        for _r in range(self._rows):
+            for _c in range(self._cols):
+                self._trelli[_r][_c].brightness = self._brightness

adafruit_neotrellis/neotrellis.py

@@ -1,20 +1,24 @@
-# SPDX-FileCopyrightText: 2018 Dean Miller for Adafruit Industries
+# SPDX-FileCopyrightText: 2021 Dean Miller for Adafruit Industries
 #
 # SPDX-License-Identifier: MIT
 
 """
 ``adafruit_neotrellis``
 ====================================================
 
-4x4 elastomer buttons and RGB LEDs
+A CircuitPython driver class for the 4x4 NeoTrellis with elastomer buttons and
+NeoPixel RGB LEDs.
 
-* Author(s): Dean Miller
+* Author(s): Dean Miller, JG for CedarGroveMakerStudios
 
 Implementation Notes
 --------------------
 
 **Hardware:**
 
+* 'NeoTrellis RGB Driver PCB for 4x4 Keypad, PID: 3954
+  <https://www.adafruit.com/product/3954>'
+
 **Software and Dependencies:**
 
 * Adafruit CircuitPython firmware for the supported boards:
@@ -24,8 +28,6 @@
   https://github.com/adafruit/Adafruit_CircuitPython_seesaw/releases
 """
 
-# imports
-
 __version__ = "0.0.0-auto.0"
 __repo__ = "https://github.com/adafruit/Adafruit_CircuitPython_neotrellis.git"
 
@@ -53,14 +55,28 @@ def _seesaw_key(xval):
     return int(int(xval / 8) * 4 + (xval % 8))
 
 
+# pylint: disable=too-many-arguments
 class NeoTrellis(Keypad):
-    """Driver for the Adafruit NeoTrellis."""
-
-    def __init__(self, i2c_bus, interrupt=False, addr=_NEO_TRELLIS_ADDR, drdy=None):
+    """Driver for the Adafruit 4x4 NeoTrellis."""
+
+    def __init__(
+        self,
+        i2c_bus,
+        interrupt=False,
+        addr=_NEO_TRELLIS_ADDR,
+        drdy=None,
+        brightness=1.0,
+    ):
         super().__init__(i2c_bus, addr, drdy)
         self.interrupt_enabled = interrupt
+        self._brightness = brightness
         self.callbacks = [None] * _NEO_TRELLIS_NUM_KEYS
-        self.pixels = NeoPixel(self, _NEO_TRELLIS_NEOPIX_PIN, _NEO_TRELLIS_NUM_KEYS)
+        self.pixels = NeoPixel(
+            self,
+            _NEO_TRELLIS_NEOPIX_PIN,
+            _NEO_TRELLIS_NUM_KEYS,
+            brightness=self._brightness,
+        )
 
     def activate_key(self, key, edge, enable=True):
         """Activate or deactivate a key on the trellis. Key is the key number from
@@ -85,3 +101,15 @@ def sync(self):
                     and self.callbacks[evt.number] is not None
                 ):
                     self.callbacks[evt.number](evt)
+
+    @property
+    def brightness(self):
+        """The NeoPixel brightness level of the board."""
+        return self._brightness
+
+    @brightness.setter
+    def brightness(self, new_brightness):
+        """Select a NeoPixel brightness level for the board. A valid brightness
+        value is in the range of 0.0 to 1.0."""
+        self._brightness = new_brightness
+        self.pixels.brightness = self._brightness

examples/neotrellis_multitrellis_simpletest.py

@@ -1,31 +1,34 @@
-# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
+# SPDX-FileCopyrightText: 2022 ladyada for Adafruit Industries
 # SPDX-License-Identifier: MIT
 
 import time
-
-from board import SCL, SDA
-import busio
+import board
 from adafruit_neotrellis.neotrellis import NeoTrellis
 from adafruit_neotrellis.multitrellis import MultiTrellis
 
-# create the i2c object for the trellis
-i2c_bus = busio.I2C(SCL, SDA)
+# Create the I2C object for the NeoTrellis
+i2c_bus = board.I2C()
 
-"""create the trellis. This is for a 2x2 array of NeoTrellis boards
-for a 2x1 array (2 boards connected left to right) you would use:
+# Create the NeoTrellis object
+"""
+# This is for a 2x1 array (2 boards connected left to right):
 
 trelli = [
-    [NeoTrellis(i2c_bus, False, addr=0x2E), NeoTrellis(i2c_bus, False, addr=0x2F)]
+    [NeoTrellis(i2c_bus, False, addr=0x2E), NeoTrellis(i2c_bus, False, addr=0x2F)],
     ]
 
 """
+# This is for a 2x2 array of NeoTrellis boards:
 trelli = [
     [NeoTrellis(i2c_bus, False, addr=0x2E), NeoTrellis(i2c_bus, False, addr=0x2F)],
     [NeoTrellis(i2c_bus, False, addr=0x30), NeoTrellis(i2c_bus, False, addr=0x31)],
 ]
 
 trellis = MultiTrellis(trelli)
 
+# Set the brightness value (0 to 1.0)
+trellis.brightness = 0.5
+
 # some color definitions
 OFF = (0, 0, 0)
 RED = (255, 0, 0)
@@ -35,21 +38,21 @@
 BLUE = (0, 0, 255)
 PURPLE = (180, 0, 255)
 
-# this will be called when button events are received
+# This will be called when button events are received
 def blink(xcoord, ycoord, edge):
-    # turn the LED on when a rising edge is detected
+    # Turn the LED on when a rising edge is detected
     if edge == NeoTrellis.EDGE_RISING:
         trellis.color(xcoord, ycoord, BLUE)
-    # turn the LED off when a falling edge is detected
+    # Turn the LED off when a falling edge is detected
     elif edge == NeoTrellis.EDGE_FALLING:
         trellis.color(xcoord, ycoord, OFF)
 
 
 for y in range(8):
     for x in range(8):
-        # activate rising edge events on all keys
+        # Activate rising edge events on all keys
         trellis.activate_key(x, y, NeoTrellis.EDGE_RISING)
-        # activate falling edge events on all keys
+        # Activate falling edge events on all keys
         trellis.activate_key(x, y, NeoTrellis.EDGE_FALLING)
         trellis.set_callback(x, y, blink)
         trellis.color(x, y, PURPLE)
@@ -61,6 +64,6 @@ def blink(xcoord, ycoord, edge):
         time.sleep(0.05)
 
 while True:
-    # the trellis can only be read every 17 millisecons or so
+    # The NeoTrellis can only be read every 17 milliseconds or so
     trellis.sync()
     time.sleep(0.02)

examples/neotrellis_simpletest.py

@@ -1,18 +1,19 @@
-# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
+# SPDX-FileCopyrightText: 2022 ladyada for Adafruit Industries
 # SPDX-License-Identifier: MIT
 
 import time
-
-from board import SCL, SDA
-import busio
+import board
 from adafruit_neotrellis.neotrellis import NeoTrellis
 
 # create the i2c object for the trellis
-i2c_bus = busio.I2C(SCL, SDA)
+i2c_bus = board.I2C()
 
 # create the trellis
 trellis = NeoTrellis(i2c_bus)
 
+# Set the brightness value (0 to 1.0)
+trellis.brightness = 0.5
+
 # some color definitions
 OFF = (0, 0, 0)
 RED = (255, 0, 0)