def makeColorSensor(port):
try:
s = ev3dev.ColorSensor(port)
except (AttributeError, OSError):
logger.info('no color sensor connected to port [%s]', port)
s = None
return s
class ColorSensors:
"""
The class for the color sensors that are used by the robot to follow lines and identify tags.
"""
line_clr = ev3.ColorSensor(ev3.INPUT_3); assert line_clr.connected
tag_clr = ev3.ColorSensor(ev3.INPUT_1); assert tag_clr.connected
line_clr.mode = tag_clr.mode = 'COL-REFLECT'
@classmethod
def get_values(cls):
"""
Gets the values from the line color and tag color sensor.
Keyword arguments:
cls -- The class
"""
return cls.line_clr.value(), cls.tag_clr.value()
@classmethod
def get_line_value(cls):
"""
Gets the value from the line color sensor.
Keyword arguments:
cls -- The class
"""
return cls.line_clr.value()
@classmethod
def get_tag_value(cls):
"""
Get the color value of the tag color sensor.
Keyword arguments:
cls -- The class
"""
return cls.tag_clr.value()