Question

我在这里很新，没有PHP经验，只需要这个应用程序就可以工作。我认为我非常接近，但由于某种原因它不起作用。

在我的设置中，我使用Arduino Uno和Ethernet Shield 2来托管基本的HTML网站，该网站只根据5个引脚的输入显示一些文本。这部分工作正常，但现在我想阅读这篇文章并将其包含在我正在研究的网站上。经过一些谷歌搜索我认为它可以用一个简单的PHP脚本完成，但它不能与Arduino一起工作，我没有收到错误信息，它只是不起作用。

这是我的Arduino代码：

#include <SPI.h>
#include <Ethernet2.h>

// Enter a MAC address and IP address for your controller below.
// The IP address will be dependent on your local network:
byte mac[] = {
 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED
};
IPAddress ip(192, 168, 1, 177);

// Initialize the Ethernet server library
// with the IP address and port you want to use
// (port 80 is default for HTTP):
EthernetServer server(80);

void setup() {
  // Open serial communications and wait for port to open:
  Serial.begin(9600);
  //while (!Serial) {
    //; // wait for serial port to connect. Needed for Leonardo only
  //}


  // start the Ethernet connection and the server:
  Ethernet.begin(mac, ip);
  server.begin();
  Serial.print("server is at ");
  Serial.println(Ethernet.localIP());
}


void loop() {
  // listen for incoming clients
  EthernetClient client = server.available();
  if (client) {
    Serial.println("new client");
    // an http request ends with a blank line
    boolean currentLineIsBlank = true;
while (client.connected()) {
  if (client.available()) {
    char c = client.read();
    Serial.write(c);
    // if you've gotten to the end of the line (received a newline
    // character) and the line is blank, the http request has ended,
    // so you can send a reply
    if (c == '\n' && currentLineIsBlank) {
      // send a standard http response header
      client.println("HTTP/1.1 200 OK");
      client.println("Content-Type: text/html");
      //client.println("Connection: close");  // the connection will be closed after completion of the response
      client.println("Refresh: 30");  // refresh the page automatically every X sec
      client.println();
      client.println("<!DOCTYPE HTML>");
      client.println("<html>");
      // output the value of each analog input pin
      for (int analogChannel = 0; analogChannel < 6; analogChannel++) {
        int sensorReading = analogRead(analogChannel);
        if(sensorReading>1000){
        client.print("Toilet ");
        client.print(analogChannel);
        client.print(" is occupied.");
        client.print("<br />");
        }
        else{
        client.print("Toilet ");
        client.print(analogChannel);
        client.print(" is free.");
        client.print("<br />");
        }
      }
      client.println("</html>");
      break;
    }
    if (c == '\n') {
      // you're starting a new line
      currentLineIsBlank = true;
    }
    else if (c != '\r') {
      // you've gotten a character on the current line
      currentLineIsBlank = false;
        }
      }
    }
    // give the web browser time to receive the data
    delay(1);
    // close the connection:
    client.stop();
    Serial.println("client disconnected");
  }
}

我的PHP代码：

<?php
function get_data($url) {
$ch = curl_init();
$timeout = 5;
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
$data = curl_exec($ch);
curl_close($ch);
return $data;
}
echo get_data('http://192.168.1.177/');
?>

我完全清楚，我正在努力实现更优雅，更有效的解决方案，但在这种情况下，我真的需要这个才能工作，它不一定要完美！我的猜测是我必须以某种方式配置Arduino以允许这种连接，但我对此不太了解......

我希望你能提前帮助我！：）

使用PHP从Arduino读取HTML

0 个答案: