我想创建一个domotica设置与我的Arduino和我的服务器。在使用射频发射器之前,我试图从我的php网页上控制LED(设置它们的开/关)。PHP网站控制Arduino发送代码加载网页
这一切都完美的作品,除了一个事实,即LED1转弯时我加载/刷新网页上。我的网页包含下面的代码(这是我改编自https://www.lassiemarlowe.com/tutorials/power-led-bulbs-arduino-php-part-2/):
<html>
<head>
<title>Arduino Domotica Control Panel</title>
一些CSS代码在这里...
<?php
switch($_POST)
{
case isset($_POST['submitOn']):
$fp = fopen("/dev/ttyUSB1", "w");
fwrite($fp, 1);
fclose($fp);
break;
case isset($_POST['submitOff']):
$fp = fopen("/dev/ttyUSB1", "w");
fwrite($fp, 2);
fclose($fp);
break;
case isset($_POST['submitOn1']):
$fp = fopen("/dev/ttyUSB1", "w");
fwrite($fp, 3);
fclose($fp);
break;
case isset($_POST['submitOff1']):
$fp = fopen("/dev/ttyUSB1", "w");
fwrite($fp, 4);
fclose($fp);
break;
case isset($_POST['submitOn2']):
$fp = fopen("/dev/ttyUSB1", "w");
fwrite($fp, 5);
fclose($fp);
break;
case isset($_POST['submitOff2']):
$fp = fopen("/dev/ttyUSB1", "w");
fwrite($fp, 6);
fclose($fp);
break;
case isset($_POST['allon']):
$fp = fopen("/dev/ttyUSB1", "w");
fwrite($fp, 7);
fclose($fp);
break;
case isset($_POST['alloff']):
$fp = fopen("/dev/ttyUSB1", "w");
fwrite($fp, 8);
fclose($fp);
break;
}
?>
</head>
<body>
<h1>Control Panel</h1>
<form class="control-panel-frm" method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>">
<input type='submit' class="s3d turnOn" name='submitOn' value='LED 1 on'>
<input type='submit' class="s3d switchoff" name='submitOff' value='LED 1 off'>
<br><br>
<input type='submit' class="s3d turnOn" name='submitOn1' value='LED 2 on'>
<input type='submit' class="s3d switchoff" name='submitOff1' value='LED 2 off'>
<br><br>
<input type='submit' class="s3d turnOn" name='submitOn2' value='LED 3 on'>
<input type='submit' class="s3d switchoff" name='submitOff2' value='LED 3 off'>
<br><br>
<input type='submit' class="s3d turnOn" name='allon' value='All LEDs on'>
<input type='submit' class="s3d switchoff" name='alloff' value='All LEDs off'>
</form>
如前所述,问题是当我加载/刷新网页时,LED1(对应php post'submitOn')开启。当检查串行监视器时,Arduino收到'1'。
我应该为了防止我的网页的加载时发送任何内容到Arduino的改变?
代码的'if'行有一个语法错误;该行应该以代码中看到的两个括号')'而不是两个结尾。 – DaanMusic
你是完全正确的。我已经修复了它... – pmayer
'array_key_exists'更合适... – pmayer