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def __init__( self, aCmd, aData, aClk, aAtt, aCallback = None ):
self._cmd = Pin(aCmd, Pin.OUT, Pin.PULL_UP)
self._data = Pin(aData, Pin.IN, Pin.PULL_UP)
self._clk = Pin(aClk, Pin.OUT, Pin.PULL_UP)
self._att = Pin(aAtt, Pin.OUT, Pin.PULL_UP)
Thank you.