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added mirror option for eg. wokwi.com #11

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7 changes: 5 additions & 2 deletions max7219.py
Original file line number Diff line number Diff line change
Expand Up @@ -36,7 +36,7 @@
_DISPLAYTEST = const(15)

class Matrix8x8:
def __init__(self, spi, cs, num):
def __init__(self, spi, cs, num, mirror=0):
"""
Driver for cascading MAX7219 8x8 LED matrices.

Expand All @@ -53,7 +53,10 @@ def __init__(self, spi, cs, num):
self.cs.init(cs.OUT, True)
self.buffer = bytearray(8 * num)
self.num = num
fb = framebuf.FrameBuffer(self.buffer, 8 * num, 8, framebuf.MONO_HLSB)
if not mirror:
fb = framebuf.FrameBuffer(self.buffer, 8 * num, 8, framebuf.MONO_HLSB)
else:
fb = framebuf.FrameBuffer(self.buffer, 8 * num, 8, framebuf.MONO_HMSB)
self.framebuf = fb
# Provide methods for accessing FrameBuffer graphics primitives. This is a workround
# because inheritance from a native class is currently unsupported.
Expand Down