reflectance_sensors.py 文件源码

def setup(self):
        # Initialize class variables
        self.max_val = [-1, -1, -1, -1, -1, -1]
        self.min_val = [-1, -1, -1, -1, -1, -1]
        self.start_time = -1
        # Initialize value array to all negative values, which should never appear
        # as an actual result
        self.value = [-1.0, -1.0, -1.0, -1.0, -1.0, -1.0]
        # A dictionary mapping each channel to the index it's value is located in
        # the value array
        self.sensor_indices = {29: 5, 36: 4, 37: 3, 31: 2, 32: 1, 33: 0}
        self.updated = False
        # For GPIO.BOARD
        self.sensor_inputs = [33, 32, 31, 37, 36, 29]  # Sensors from left to right

        # Set the mode to GPIO.BOARD
        GPIO.setmode(GPIO.BOARD)