Arduino + EtherCard enc28j60 + 2 thermistors + POST how to?

[crazydesign]

Hello to all.
After making the code for an arduino + enc28j60 + 2 thermistors and web server to work, now i want to send a POST to a server so i can log the informations to a mysql server and then read them from outside the house network.
The link to wich i want to send the POST is http://domain.biz/a/index.php?tur=XX&retur=YY
Can someone help me to include into my existing code the part of code witch will do what i want?
My actual code is:

#include <UIPEthernet.h> // Used for Ethernet
int ThermistorPin = 0;
int ThermistorPin1 = 1;
int Vo;
int Va;
float R1 = 4600;
float R4 = 9900;
float logR2, logR3, R2, R3, T, T1, Tc, Tr;
float c1 = 1.009249522e-03, c2 = 2.378405444e-04, c3 = 2.019202697e-07;

// **** ETHERNET SETTING ****
// Ethernet MAC address - must be unique on your network
byte mac[] = { 0x54, 0x34, 0x41, 0x30, 0x30, 0x31 };                                      
// ethernet interface IP address (unique in your network)
IPAddress ip(192, 168, 0, 200);                        
// ethernet interface IP port (80 = http)
EthernetServer server(80);

EthernetClient client;

void setup() {
  // Open serial communications:
  Serial.begin(9600);

  // start the Ethernet connection and the server:
  Ethernet.begin(mac, ip);
  server.begin();

  Serial.println("CrazyDesign.biz - Temperature Drone - v1.0");
  Serial.println("-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n");
  Serial.print("IP Address: ");
  Serial.println(Ethernet.localIP());
  Serial.println();
}

void loop() {

Vo = analogRead(ThermistorPin);
  R2 = R1 * (1023.0 / (float)Vo - 1.0);
  logR2 = log(R2);
  T = (1.0 / (c1 + c2*logR2 + c3*logR2*logR2*logR2));
  Tc = T - 273.15;
   
  Va = analogRead(ThermistorPin1);
  R3 = R4 * (1023.0 / (float)Va - 1.0);
  logR3 = log(R3);
  T1 = (1.0 / (c1 + c2*logR3 + c3*logR3*logR3*logR3));
  Tr = T1 - 273.15;

  // listen for incoming clients
  client = server.available();

  if (client)
  {  
    Serial.println("-> New Connection\n");
Serial.print("Tur: "); 
  Serial.print(Tc);
  Serial.print(" C  ");  
  Serial.print("Retur: "); 
  Serial.print(Tr);
  Serial.println(" C"); 
  delay(1000);
    // a http request ends with a blank line
    boolean currentLineIsBlank = true;

    while (client.connected())
    {
      if (client.available()) {
        char c = client.read();

        // 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)
        {

          client.print("<font color=blue size=5>");
          client.print("Tur: ");
          client.println(Tc);
          client.println("<p></font><font color=blue size=5>");
          client.print("Retur: ");
          client.println(Tr);
          client.print("</font>");
          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(10);

    // close the connection:
    client.stop();
    Serial.println("   Disconnected\n");
  
  }
  }

P.S. i have allready triyed all i could find on internet about this.

Thank you all for your hints or help.

[Juraj]

you can use ArduinoHttpClient library.

please use the EthernetENC library for new projects (I maintain both libraries)

[crazydesign]

Hi there. I managed to do what i wanted by adding the following:

 client.print("<iframe src='http://domain.tld/a/alin.php?tur=");
          client.print(Tc);
          client.print("&retur=");
          client.print(Tr);
          client.print("' width='1' height='1' name='DataBox'>");
          client.print("</iframe>");

And now it send the data to my php file hosted on an external server and the php file inserts the data into mysql.

Now i have another problem: How do i make it to do this every x seconds? I triyed addng delay(5000); but if i do this it won't work.

Any sugestions?