新的Raspberry Pi用户

Question

我是这个论坛和Python的新手，需要这样的帮助。我正在建设一个关于树莓派的运动感应器夜灯项目。我让代码处理一个异常，即我被困在嵌套的while循环中。这个构建的目标是，当光敏电阻检测到黑暗时，它将使运动传感器能够检测到运动。当光敏电阻检测到黑暗时，如果感觉到有运动，灯就会亮起来。我已经附上了下面的代码。

from gpiozero import LED
from gpiozero import MotionSensor
from gpiozero import LightSensor
from time import sleep

red_led = LED(17)
pir = MotionSensor(4)
green_led = LED(21)
sensor = LightSensor(23)

red_led.off()
green_led.off()

while True:
    sensor.wait_for_light()
    print("Dark Mode")
    green_led.on()   
        
    while True:
        pir.wait_for_motion()
        print("Motion Detected")
        red_led.on()    
        pir.wait_for_no_motion()
        red_led.off()
        print("Motion Stopped")
              
    sensor.wait_for_dark()
    print("Light Mode")
    green_led.off()

Answer 1

这是一个可能的设计。这是未经测试的。在关灯之前，你可能想要延迟一段时间。

from gpiozero import LED
from gpiozero import MotionSensor
from gpiozero import LightSensor
from time import sleep
import threading

red_led = LED(17)
pir = MotionSensor(4)
green_led = LED(21)
sensor = LightSensor(23)

red_led.off()
green_led.off()

daylight = True

def lightSensorThread():
    global daylight
    daylight = True
    while True:
        sensor.wait_for_light()
        green_led.on()   
        daylight = True
        print( "Light mode" )
                  
        sensor.wait_for_dark()
        green_led.off()
        daylight = False
        print("Dark Mode")

def motionSensor():
    light = False
    while True:
        pir.wait_for_motion()
        print("Motion Detected")
        red_led.on()    
        if not daylight:
            # Turn the light on here
            light = True
        pir.wait_for_no_motion()
        print("Motion Stopped")
        red_led.off()
        if light:
            # Turn the light off here.
            light = False

sense = threading.Thread(target=lightSensorThread)
sense.start()
motionSensor()