我正在使用的代码是:
#!/usr/bin/env python3
from ev3dev2.motor import LargeMotor, MoveSteering, OUTPUT_B, OUTPUT_C, SpeedDPS
from ev3dev2.sensor.lego import InfraredSensor
from sys import stderr
from time import sleep
motorB = LargeMotor(OUTPUT_B)
steer_pair = MoveSteering(OUTPUT_B, OUTPUT_C)
ir = InfraredSensor()
wf = 1
motorB.position = 0
steer_pair.on(steering=0, speed=SpeedDPS(265))
while motorB.position*0.612 < 640:
if ir.proximity * 0.7 < 23:
motorB.position = 0
print(motorB.position*0.612, ir.proximity * 0.7, file = stderr)
sleep(0.1)
steer = 28
rots = -1
steer_pair.on_for_rotations(steering=0, speed=25, rotations=0.5*wf)
steer_pair.on_for_rotations(steering=steer, speed=15, rotations=rots*wf)
steer_pair.on_for_rotations(steering=-steer, speed=15, rotations=rots*wf)
steer_pair.on_for_rotations(steering=0, speed=25, rotations=0.7*wf)
当我运行代码时,出现以下错误:
Traceback (most recent call last):
File "/home/robot/part3/self_park_ir.py", line 9, in <module>
ir = InfraredSensor()
File "/usr/lib/python3/dist-packages/ev3dev2/sensor/lego.py", line 838, in __init__
super(InfraredSensor, self).__init__(address, name_pattern, name_exact, driver_name='lego-ev3-ir', **kwargs)
File "/usr/lib/python3/dist-packages/ev3dev2/sensor/__init__.py", line 78, in __init__
super(Sensor, self).__init__(self.SYSTEM_CLASS_NAME, name_pattern, name_exact, **kwargs)
File "/usr/lib/python3/dist-packages/ev3dev2/__init__.py", line 223, in __init__
chain_exception(DeviceNotFound("%s is not connected." % self), None)
File "/usr/lib/python3/dist-packages/ev3dev2/__init__.py", line 54, in chain_exception
raise exception from cause
ev3dev2.DeviceNotFound: InfraredSensor is not connected.
我尝试使用不同的端口和电线,因为这是解决我遇到的另一个问题的方法,但这次没有奏效。有人知道怎么修这个东西吗?