Question

我试图从这个PHP代码调用python脚本但它不起作用。这是一个简单的代码，它有一个开/关按钮。这用于打开/关闭覆盆子pi的gpio引脚。当我单独运行它时，python脚本工作正常。但是php代码无法执行python脚本。代码是：

<html>
<head>
<meta charset="UTF-8" />
<link rel="stylesheet" type="text/css" href="css/style.css">
</head>


<?php
if (isset($_POST['LightON']))
{
exec("sudo python /home/pi/lighton_1.py");
}
if (isset($_POST['LightOFF']))
{
exec("sudo python /home/pi/lightoff_1.py");
}
?>

<form method="post">
<button class="btn" name="LightON">Light ON</button>&nbsp;
<button class="btn" name="LightOFF">Light OFF</button><br><br>
</form> 


</html>

*我没有代码。我是从youtube视频中获取的。

这是Python代码：

#!/usr/bin/python

# Import required Python libraries
import RPi.GPIO as GPIO
import time

# Use BCM GPIO references instead of physical pin numbers
GPIO.setmode(GPIO.BCM)

# init list with pin numbers

pinList = [15]

# loop through pins and set mode and state to 'low'

for i in pinList: 
    GPIO.setwarnings(False)
    GPIO.setup(i, GPIO.OUT) 
    GPIO.output(i, GPIO.HIGH)

def trigger() :
        for i in pinList:
          GPIO.output(i, GPIO.HIGH)
#         GPIO.cleanup()
          break


try: 
    trigger()


except KeyboardInterrupt:
    print "  Quit" 
    # Reset GPIO settings
    GPIO.cleanup()

从php调用python脚本

0 个答案: