1

嗨，我试图通过树莓派、继电器和外部电源来控制一些电磁阀。我在下面的 python 中编写了一个运行良好的脚本，用于更改物理按钮的值，但也希望能够从 Web 浏览器控制它。我一直在使用 webiopi 并且可以正常工作，因为我现在可以打开和关闭继电器。我的问题是，当我启动 python 脚本时，我设置为输出的按钮工作正常，但是当我按下 javascript 上的开/关按钮时，物理按钮不再工作。我认为问题是我需要让 python 脚本与 javascript“对话”？按下时更新输出的值？但是我不确定该怎么做？下面是我的两个单独的代码。

Python。

import RPi.GPIO as GPIO
import time


GPIO.setmode(GPIO.BOARD)

GPIO.setup(10, GPIO.IN) ## Setup GPIO Pin 10 to IN
GPIO.setup(22, GPIO.IN) ## Setup GPIO Pin 22 to IN
GPIO.setup(13, GPIO.OUT) ## Setup GPIO Pin 13 to OUT



#############################################

# All buttons wired to provide High input when pressed.

#############################################
# Cleanroom = 0 #sets a variable that will never be meet so while loop will continue       for ever or if power is interupted.

Cleanroom = 0
while True:


#########################################################################
# below is code for opening cryo, it includes button debouncing 
    cryo_open = 0
    while True:
    #take a reading
    on = GPIO.input(22)
    GPIO.output(13, False)
    #if the last reading was low and this one high, print
    if ((not cryo_open) and on):
        print("Cryo Open")
        #update previous input
        cryo_open = on
        #slight pause to debounce
        time.sleep(0.05)
        break


#########################################################################
# below is code for closing cryo, it includes button debouce
    cryo_close = 0
    while True:
        #take a reading
        on = GPIO.input(10)
        GPIO.output(13, True)
        #if the last reading was low and this one high, print
        if ((not cryo_close) and on):
            print("Cryo Close")
            #update previous input
            cryo_close = on
            #slight pause to debounce
            time.sleep(0.05)
            break




GPIO.cleanup(13)
GPIO.cleanup(22)   
GPIO.cleanup(10)

Java 脚本

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"              <"http://www.w3.org/TR/html4/loose.dtd">
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <meta name="viewport" content = "height = device-height, width = 420, user-scalable =  no" /> 
    <title>WebIOPi | Demo</title>
    <script type="text/javascript" src="/webiopi.js"></script>
    <script type="text/javascript">
    webiopi().ready(function() {

           webiopi().setFunction(25,"out");
           webiopi().setFunction(15,"out");

                var content, button;
                content = $("#content");

                // create a "SWITCH" labeled cryo for GPIO 25
                button = webiopi().createGPIOButton(25, "Cryo");
                content.append(button); // append button to content div

                 // create a button that output a single pulse
                button = webiopi().createPulseButton("pulse", "Cryo Open 2", 25);
                content.append(button); // append button to content div

                 // create a button that output a single pulse
                button = webiopi().createPulseButton("pulse", "Cryo Close 2", 15);
                content.append(button); // append button to content div







        });

        </script>
        <h1 style = "text-align:center; font-family: Arial; font-size:15px">Clean Room Pneumatic Valve Control</h1>
        <style type="text/css">
                button {
                        display: block;
                        background-color: rgb(202, 60, 60);
                        margin: 15px 5px 5px 5px;
                        width: 300px;
                        height: 100px;
                        color: rgb(202, 60, 60);
                        color: rgb(202, 60, 60);
                        font-size: 15pt;
                        font-weight: block;
                        color: white;
                        border-radius: 20px;
                        text-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
                        outline: none;
                }

                //input[type="range"] {
                        color: rgb(202, 60, 60);
                        display: block;
                        width: 160px;
                        height: 45px;//
                }



                #gpio25.HIGH {
                        background-color: rgb(28, 184, 65); /* this is a green */
                }


                #gpio15.LOW {
                        background-color: rgb(202, 60, 60); /* this is a maroon */
                }


        </style>
    </head>
    <body>
        <div id="content" align="center"></div>
    </body>
    </html>
4

0 回答 0