有没有示例如何使用google aiy语音板上的GPIO的数字输入或模拟输入? [英] Is there any example of how to use the digital input or analog input of GPIO on google aiy voice board?
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问题描述
我无法读取来自运动传感器(HC-SR501)的输入,该传感器连接到我的语音套件的语音引擎盖上扩展引脚的PIN_A.
I can not read the input from the motion sensor (HC-SR501) which connects to PIN_A of the expansion pins on the voice bonnet of my aiy voice kit.
下面是代码和错误消息,请说明一下.
Below are the code and the error message, please shed some light.
代码:
from gpiozero import MotionSensor
from aiy.pins import (PIN_A, PIN_B, PIN_C, PIN_D)
pir = MotionSensor(PIN_A)
pir.wait_for_motion()
print("Motion detected!")
错误消息:
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/gpiozero/input_devices.py", line 51, in __init__
self.pin.pull = pull
File "/usr/lib/python3/dist-packages/gpiozero/pins/__init__.py", line 279, in <lambda>
lambda self, value: self._set_pull(value),
File "/opt/aiy/projects-python/src/aiy/pins.py", line 569, in _set_pull
'Only pull up is supported right now (%s)' % pull)
gpiozero.exc.PinFixedPull: Only pull up is supported right now (down)
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "motion_sensor.py", line 4, in <module>
pir = MotionSensor(PIN_A)
File "/usr/lib/python3/dist-packages/gpiozero/devices.py", line 95, in __call__
self = super(GPIOMeta, cls).__call__(*args, **kwargs)
File "/usr/lib/python3/dist-packages/gpiozero/input_devices.py", line 451, in __init__
pin_factory=pin_factory
File "/usr/lib/python3/dist-packages/gpiozero/input_devices.py", line 163, in __init__
pin, pull_up, pin_factory=pin_factory
File "/usr/lib/python3/dist-packages/gpiozero/mixins.py", line 164, in __init__
super(EventsMixin, self).__init__(*args, **kwargs)
File "/usr/lib/python3/dist-packages/gpiozero/input_devices.py", line 53, in __init__
self.close()
File "/usr/lib/python3/dist-packages/gpiozero/input_devices.py", line 185, in close
super(SmoothedInputDevice, self).close()
File "/usr/lib/python3/dist-packages/gpiozero/devices.py", line 393, in close
self.pin_factory.release_pins(self, self._pin.number)
AttributeError: 'HatPin' object has no attribute 'number'
Error in atexit._run_exitfuncs:
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/gpiozero/devices.py", line 483, in _shutdown
_devices_shutdown()
File "/usr/lib/python3/dist-packages/gpiozero/devices.py", line 476, in _devices_shutdown
dev.close()
File "/usr/lib/python3/dist-packages/gpiozero/input_devices.py", line 185, in close
super(SmoothedInputDevice, self).close()
File "/usr/lib/python3/dist-packages/gpiozero/devices.py", line 393, in close
self.pin_factory.release_pins(self, self._pin.number)
AttributeError: 'HatPin' object has no attribute 'number'
Exception ignored in: <object repr() failed>
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/gpiozero/devices.py", line 122, in __del__
self.close()
File "/usr/lib/python3/dist-packages/gpiozero/input_devices.py", line 185, in close
super(SmoothedInputDevice, self).close()
File "/usr/lib/python3/dist-packages/gpiozero/devices.py", line 393, in close
self.pin_factory.release_pins(self, self._pin.number)
AttributeError: 'HatPin' object has no attribute 'number'
推荐答案
您解决了吗?
通过查看 API 和您的错误消息,请尝试更改代码的第3行
By looking at the API and your error message, try changing line 3 of your code
发件人:
pir = MotionSensor(PIN_A)
收件人:
pir = MotionSensor(PIN_A, pull_up=True)
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