GPIO Python 检查输入状态是否改变

Question

大家晚上好，

请看下面的代码。无论如何，一旦输入 23 和 24 以及输出 4 被激活，我可以连续检查是否有任何输入变为假，如果是，则将输出 4 发送到高电平？

非常感谢任何帮助。

B.

import RPi.GPIO as GPIO
import time

GPIO.setwarnings(False)

GPIO.setmode(GPIO.BCM)

GPIO.setup(23, GPIO.IN, pull_up_down=GPIO.PUD_UP)
GPIO.setup(24, GPIO.IN, pull_up_down=GPIO.PUD_UP)

GPIO.setup(18,GPIO.OUT)
GPIO.output(18,0)
GPIO.setup(4,GPIO.OUT)
GPIO.output(4,1)


while True:
    if(GPIO.input(23) ==1):
        print("UP")
        GPIO.output(18, GPIO.LOW)
        time.sleep(2)

    if(GPIO.input(23) ==0):
        print("DOWN")
        GPIO.output(18, GPIO.HIGH)
        time.sleep(2)

    input_state = GPIO.input(24) and GPIO.input(23)
    if input_state == True:
        GPIO.output(4, GPIO.LOW)

Answer 1

不知道原理图 and/or 你想用电路做什么，我真的无法改进代码。但这应该有效：

import pigpio, time

Debounce = 0.02

Input23 = 23
Input24 = 24

Output18 = 18
Output4 = 4

pi_GPIO = pigpio.pi()

pi_GPIO.set_mode(Input23, pigpio.INPUT)
pi_GPIO.set_pull_up_down(Input23 , pigpio.PUD_UP)

pi_GPIO.set_mode(Input24, pigpio.INPUT)
pi_GPIO.set_pull_up_down(Input24 , pigpio.PUD_UP)

pi_GPIO.set_mode(Output18, pigpio.OUTPUT)
pi_GPIO.set_pull_up_down(Output18, pigpio.PUD_UP)

pi_GPIO.set_mode(Output4, pigpio.OUTPUT)


def cbf(gpio, level, tick):
    time.sleep(Debounce) # only used if using a button or any mechanical switch. Change value according to the type of switch, see datasheet and/or experimentation
    if pi_GPIO.read(Input23):
        print("Input23 UP")
        pi_GPIO.write(Output18, 0)

    else:
        print("Input23 DOWN")
        pi_GPIO.write(Output18, 0)


cb = pi_GPIO.callback(Input23, pigpio.FALLING_EDGE, cbf)


while True:
    if pi_GPIO.read(Input24) and pi_GPIO.read(Input23):
        time.sleep(Debounce) # only used if using a button or any mechanical switch. Change value according to the type of switch, see datasheet and/or experimentation
        if pi_GPIO.read(Input24) and pi_GPIO.read(Input23):  # only used if using a button or any mechanical switch. Change value according to the type of switch, see datasheet and/or experimentation
            pi_GPIO.write(Output4, 0)

只要值发生变化，函数 CBF 就会被调用，与 while 循环无关。

如果您还没有 pigpio，则需要安装它。一个功能更全面的 RPi.GPIO 库，如果在 pi 设备上启用，它还支持远程访问。

pip install pigpio

如果您能提供更多详细信息，请告诉我。

Answer 2

到目前为止这似乎有效。当我向系统中添加更多硬件时，这很可能会发生变化。

import pigpio, time

Debounce = 0.5

Input23 = 23
Input24 = 24

Output18 = 18
Output4 = 4

pi_GPIO = pigpio.pi()

pi_GPIO.set_mode(Input23, pigpio.INPUT)
pi_GPIO.set_pull_up_down(Input23 , pigpio.PUD_UP)
pi_GPIO.set_mode(Input24, pigpio.INPUT)
pi_GPIO.set_pull_up_down(Input24 , pigpio.PUD_UP)
pi_GPIO.set_mode(Output18, pigpio.OUTPUT)
pi_GPIO.set_mode(Output4, pigpio.OUTPUT)

while True:

    if pi_GPIO.read(Input23):
        pi_GPIO.write(18, 0)
        print("ON")
        time.sleep(Debounce)
    else:
        pi_GPIO.read(Input23)
        pi_GPIO.write(18, 1)
        print("OFF")
        time.sleep(Debounce)

    if pi_GPIO.read(Input24) and pi_GPIO.read(Input23):
        pi_GPIO.write(4, 0)
        print("Green")
        time.sleep(Debounce)
    else:
        pi_GPIO.read(Input24)
        pi_GPIO.write(4, 1)
        print("Red")
        time.sleep(Debounce)

GPIO Python 检查输入状态是否改变

GPIO Python Checking to see if an input state has changed

python

gpio