# SPDX-FileCopyrightText: 2017 Dan Halbert for Adafruit Industries
#
# SPDX-License-Identifier: MIT
"""
`adafruit_max7219.matrices.Matrix8x8`
====================================================
"""
from micropython import const
from adafruit_max7219 import max7219
__version__ = "0.0.0-auto.0"
__repo__ = "https://github.com/adafruit/Adafruit_CircuitPython_MAX7219.git"
_DECODEMODE = const(9)
_SCANLIMIT = const(11)
_SHUTDOWN = const(12)
_DISPLAYTEST = const(15)
[docs]class Matrix8x8(max7219.MAX7219):
"""
Driver for a 8x8 LED matrix based on the MAX7219 chip.
:param object spi: an spi busio or spi bitbangio object
:param ~digitalio.DigitalInOut cs: digital in/out to use as chip select signal
"""
def __init__(self, spi, cs):
super().__init__(8, 8, spi, cs)
[docs] def init_display(self):
for cmd, data in (
(_SHUTDOWN, 0),
(_DISPLAYTEST, 0),
(_SCANLIMIT, 7),
(_DECODEMODE, 0),
(_SHUTDOWN, 1),
):
self.write_cmd(cmd, data)
self.fill(0)
self.show()
[docs] def text(self, strg, xpos, ypos, bit_value=1):
"""
Draw text in the 8x8 matrix.
:param int xpos: x position of LED in matrix
:param int ypos: y position of LED in matrix
:param string strg: string to place in to display
:param bit_value: > 1 sets the text, otherwise resets
"""
self.framebuf.text(strg, xpos, ypos, bit_value)
[docs] def clear_all(self):
"""
Clears all matrix leds.
"""
self.fill(0)