wierd output

Hello guys!

I am trying to control a led via a intel galileo gen 2 the following is the code for generating web server the led is not going off. please guide me.

#include <SPI.h>
#include <Ethernet.h>

// MAC address from Ethernet shield sticker under board
byte mac[] = { 0x98, 0x4F, 0xEE, 0x05, 0x7A, 0x3D };
IPAddress ip(192, 168, 0, 101); // IP address, may need to change depending on network
EthernetServer server(80);  // create a server at port 80

String HTTP_req;          // stores the HTTP request
boolean LED_status = 0;   // state of LED, off by default

void setup()
{
    Ethernet.begin(mac, ip);  // initialize Ethernet device
    server.begin();           // start to listen for clients
    Serial.begin(9600);       // for diagnostics
    pinMode(LED_BUILTIN, OUTPUT);       // LED on pin 2
}

void loop()
{
    EthernetClient client = server.available();  // try to get client

    if (client) {  // got client?
        boolean currentLineIsBlank = true;
        while (client.connected()) {
            if (client.available()) {   // client data available to read
                char c = client.read(); // read 1 byte (character) from client
                HTTP_req += c;  // save the HTTP request 1 char at a time
                // last line of client request is blank and ends with \n
                // respond to client only after last line received
                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");
                    client.println();
                    // send web page
                    client.println("<!DOCTYPE html>");
                    client.println("<html>");
                    client.println("<head>");
                    client.println("<title>Arduino LED Control</title>");
                    client.println("</head>");
                    client.println("<body>");
                    client.println("<h1>LED</h1>");
                    client.println("<p>Click to switch LED on and off.</p>");
                    client.println("<form method=\"get\">");
                    ProcessCheckbox(client);
                    client.println("</form>");
                    client.println("</body>");
                    client.println("</html>");
                    Serial.print(HTTP_req);
                    HTTP_req = "";    // finished with request, empty string
                    break;
                }
                // every line of text received from the client ends with \r\n
                if (c == '\n') {
                    // last character on line of received text
                    // starting new line with next character read
                    currentLineIsBlank = true;
                } 
                else if (c != '\r') {
                    // a text character was received from client
                    currentLineIsBlank = false;
                }
            } // end if (client.available())
        } // end while (client.connected())
        delay(1);      // give the web browser time to receive the data
        client.stop(); // close the connection
    } // end if (client)
}

// switch LED and send back HTML for LED checkbox
void ProcessCheckbox(EthernetClient cl)
{
    if (HTTP_req.indexOf("LED2=2") > -1) {  // see if checkbox was clicked
        // the checkbox was clicked, toggle the LED
        if (LED_status) {
            LED_status = 0;
        }
        else {
            LED_status = 1;
        }
    }
    
    if (LED_status) {    // switch LED on
        digitalWrite(LED_BUILTIN, HIGH);
        // checkbox is checked
        cl.println("<input type=\"checkbox\" name=\"LED2\" value=\"2\" \onclick=\"submit();\" checked>LED2");
    }
    else {              // switch LED off
        digitalWrite(LED_BUILTIN, LOW);
        // checkbox is unchecked
        cl.println("<input type=\"checkbox\" name=\"LED2\" value=\"2\" \onclick=\"submit();\">LED2");
    }
}

If you edit your Original Post you can change the Title to something more meaningful - for example "Problem with Galileo web server"

And even though your initial title is "weird output" you have not taken the trouble to show us any of the output.

...R

ok,
so the error in the page is once I check the checkbox it does not uncheck. And about viewing the output here is it as an attachment.

thanks for your assistance in advance.

looking forward for your fast reply.

Untitled.png

Image from Reply #2 so we don’t have to download it. See this Image Guide

2686e1ffa88478f7cc6ae967a8c451f01069d8c9.png

…R

On line 77 you have an IF that is intended to operate on the status of the checkbox. But you have no debugging code to tell you what data has come from the browser.

...R