# SPDX-FileCopyrightText: 2019 Melissa LeBlanc-Williams for Adafruit Industries
#
# SPDX-License-Identifier: MIT
"""
`adafruit_featherwing.neopixel_featherwing`
====================================================
Helper for using the `NeoPixel FeatherWing <https://www.adafruit.com/product/2945>`_.
* Author(s): Melissa LeBlanc-Williams
"""
__version__ = "0.0.0+auto.0"
__repo__ = "https://github.com/adafruit/Adafruit_CircuitPython_FeatherWing.git"
import board
import neopixel
from adafruit_featherwing.pixelmatrix import PixelMatrix
try:
import typing # pylint: disable=unused-import
from microcontroller import Pin
except ImportError:
pass
[docs]
class NeoPixelFeatherWing(PixelMatrix):
"""Class representing a `NeoPixel FeatherWing
<https://www.adafruit.com/product/2945>`_.
The feather uses pins D6 by default"""
def __init__(self, pixel_pin: Pin = board.D6, brightness: float = 0.1):
"""
:param pin pixel_pin: The pin for the featherwing
:param float brightness: Optional brightness (0.0-1.0) that defaults to 1.0
"""
super().__init__()
self.rows = 4
self.columns = 8
self._matrix = neopixel.NeoPixel(
pixel_pin,
self.rows * self.columns,
brightness=brightness,
auto_write=False,
pixel_order=neopixel.GRB,
)
[docs]
def shift_up(self, rotate: bool = False):
"""
Shift all pixels up
:param rotate: (Optional) Rotate the shifted pixels to bottom (default=False)
This example shifts 2 pixels up
.. code-block:: python
import time
from adafruit_featherwing import neopixel_featherwing
neopixel = neopixel_featherwing.NeoPixelFeatherWing()
# Draw Red and Green Pixels
neopixel[4, 1] = (255, 0, 0)
neopixel[5, 1] = (0, 255, 0)
# Rotate it off the screen
for i in range(0, neopixel.rows - 1):
neopixel.shift_up(True)
time.sleep(.1)
time.sleep(1)
# Shift it off the screen
for i in range(0, neopixel.rows - 1):
neopixel.shift_up()
time.sleep(.1)
"""
super().shift_down(rotate) # Up and down are reversed
[docs]
def shift_down(self, rotate: bool = False):
"""
Shift all pixels down.
:param rotate: (Optional) Rotate the shifted pixels to top (default=False)
This example shifts 2 pixels down
.. code-block:: python
import time
from adafruit_featherwing import neopixel_featherwing
neopixel = neopixel_featherwing.NeoPixelFeatherWing()
# Draw Red and Green Pixels
neopixel[4, 1] = (255, 0, 0)
neopixel[5, 1] = (0, 255, 0)
# Rotate it off the screen
for i in range(0, neopixel.rows - 1):
neopixel.shift_down(True)
time.sleep(.1)
time.sleep(1)
# Shift it off the screen
for i in range(0, neopixel.rows - 1):
neopixel.shift_down()
time.sleep(.1)
"""
super().shift_up(rotate) # Up and down are reversed