string manipulation

Forum 2005-2010 (read only) Software Syntax & Programs
5

This is what i have for now:

#include <WString.h>
#include <Ethernet.h>
#include <LiquidCrystal.h>
LiquidCrystal lcd(9, 8, 5, 4, 3, 2);
byte mac[] = { 0x00, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
byte ip[] = { 192, 168, 2, 150 };
Server server(80);
String readString = String(50);

void setup(){
  Serial.begin(9600);
  Ethernet.begin(mac, ip);
  lcd.begin(16, 2);
  lcd.print("setup running");
}

void loop(){
  Client client = server.available();
  if (client) {
    while (client.connected()) {
      if (client.available()) {
        char c = client.read();
        if (readString.length() < 50){
          readString.append(c); 
        }
        if (c == '\n') {
          if(readString.contains("msg")){
            lcd.clear();
            // get msg form get command!
            // really need help here
            lcd.print("blabla");
          }

          // Now output HTML data starting with standart header
          client.println("HTTP/1.1 200 OK");
          client.println("Content-Type: text/html");
          client.println();
          client.println("<html><head><title>arduino msg board</title></head><body><center>");
          client.println("<form method=get>");
          client.println("<input type=text name=msg>");
          client.println("<input type=submit value=verstuur>");
          client.println("</form>");
          client.println(readString);
          client.println("</center></body></html>");
          readString="";
          client.stop();
        }
      }
    }
  }
}
// EOF *******************************

I can't get the msg out of the string.

I tried using this:
char end_value = readString.length();
String msg1 = readString.substring(10, end_value - 11);
but it returns nothing...

very annoying...

have confirmed the lcd and ethernet shield working :smiley: so that aint the problem...