如何将多个功能分配给 Raspberry 上的单个按钮？答案

【问题标题】：How can I assign multiple functions to a single botton on Raspberry?如何将多个功能分配给 Raspberry 上的单个按钮？
【发布时间】：2022-01-01 18:54:23
【问题描述】：

我正在尝试将多个功能分配给一个按钮。如果我按下按钮一次，它会做一件事，如果我按下它两次，它会做另一件事，依此类推。这是我的程序：

import RPi.GPIO as gpio
import time
gpio.setmode(gpio.BCM)
gpio.setup(10, gpio.IN)

pressed = 0;
timer = 0;

while True:
    input_value = gpio.input(10)

    if input_value == True:
        pressed += 1;
        time = 0; #to start the counter at 0

    if (time > 10): #you wait 1 sec between each presure
        print("the button has been pressed " + pressed + " times");
        pressed = 0; # you don't count anymore

    if (pressed > 0): # you are pressing the button so you count
        time += 1;

    if (pressed == 1):
        print("t=1"); # do something
    if (pressed == 2):
        print("t=2"); # do something
    if (pressed == 3):
        print("t=3"); # do something
        
    time.sleep(0.1)

我收到此错误：

Traceback (most recent call last):
  File "/home/pi/Desktop/button.py", line 16, in <module>
    if (time > 10): #you wait 1 sec between each presure
TypeError: '>' not supported between instances of 'module' and 'int'

谁知道怎么解决？

【问题讨论】：

标签： python raspberry-pi gpio

【解决方案1】：

错误是由于使用了time 而不是timer。

...
...

    if input_value == True:
        pressed += 1;
        timer = 0; #to start the counter at 0

    if (timer > 10): #you wait 1 sec between each presure
        print("the button has been pressed " + pressed + " times");
        pressed = 0; # you don't count anymore
...

【讨论】：