kopia lustrzana https://github.com/GuyCarver/MicroPython
34 wiersze
818 B
Python
34 wiersze
818 B
Python
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from pyb import Pin, ADC
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class IRDistance(object):
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""" Driver for Sharp Gp2y0a IR distance sensor. The distance
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range is around 3 to 40 inches. """
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maxinches = 31.5 #Maximun range of IR board in inches.
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_v2i = -1.02 #Voltage to inches power.
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def __init__( self, pin ) :
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"""pin may be name or pin object. It must be able to handle ADC input."""
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if type(pin) == str:
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p = Pin(pin)
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elif type(pin) == Pin:
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p = pin
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else:
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raise Exception("pin must be pin name or pyb.Pin able to support ADC")
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self._adc = ADC(p)
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@property
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def distance( self ) : return self._adc.read()
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@property
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def inches( self ) :
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volts = self.distance * 0.0048828125
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return 65.0 * pow(volts, IRDistance._v2i)
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@property
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def centimeters( self ) : return self.inches * 2.54
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