Arduino webserver 6 entradas y 7 salidas

Arduino-red-webserver
6 entradas analógicas y 7 salidas digitales.
xsetaseta@gmail.com

Este segundo montaje con la tarjeta de red para arduino, tiene como finalidad controlar 7 salidas digitales y 6 entradas analógicas.
La tarjeta Arduino Ethernet Shield se puede encontrar en el mercado entre 9€ y 25€ depende del suministrador.
Para mas detalles visitar la página oficial http://www.arduino.cc/en/Main/ArduinoEthernetShield.
La comunicación con el chip W5100 y con la tarjeta SD se hace a través del bus SPI.
La activación del chip de red se efectúa con el pin 10 del arduino, y la activación tarjeta SD se realiza con el pin 4.
He realizado dos programas, el primero es más fácil de comprender. El segundo esta optimizado para ocupar menos memoria, se intenta reducir lo mas posible la repetición de funciones iguales. El resultado es 1k menos de memoria, pero menos comprensible su estudio.
Si se quiere controlar desde fuera de tu red interna, debes de modificar en el router los el direccionamiento del puerto, para que si tu arduino tiene la dirección 192,168,2, 177 y con el puerto 80, las peticiones al puerto 80 se dirijan a la dirección IP del arduino.

Controlando el encendido de led mediante una tableta android.

Visualización del control de circuito en un navegador.

WebSerLed.ino // SETA43
// Modificacion 19-12-2012
// webserver

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

//numero de MAC
//numero de ip, depende de tu red

byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
IPAddress ip(192,168,2, 177);

String readString = String(20);
byte bandera=0;
byte z;
char c;
int sensorReading;

EthernetServer server(80);

void setup() {
  Serial.begin(9600);
   while (!Serial) { }

  Ethernet.begin(mac, ip);
  server.begin();
  Serial.print("server is at ");
  Serial.println(Ethernet.localIP());

  pinMode(2,OUTPUT);
  pinMode(3,OUTPUT);
  pinMode(5,OUTPUT);
  pinMode(6,OUTPUT);
  pinMode(7,OUTPUT);
  pinMode(8,OUTPUT);
  pinMode(9,OUTPUT);
}

void loop() {
  // listen for incoming clients
  EthernetClient client = server.available();
  if (client) {
    Serial.println("new client");

    boolean currentLineIsBlank = true;
    while (client.connected()) {
      if (client.available()) {
        c = client.read();
        Serial.write(c);
        if(c=='?' && bandera==0)
          {
           readString="";
           for(z=0;z<14;z++)
             {
               c = client.read();
               readString +=c;
             }
           Serial.println(readString);
           colocar();
           bandera=1;
          }

        if (c == '\n' && currentLineIsBlank) {

          // Manda la cabecera del http
          client.println("HTTP/1.1 200 OK");
          client.println("Content-Type: text/html");
          client.println("Connnection: close");
          client.println();
          client.println("<!DOCTYPE HTML>");
          client.println("<html>");
          // Refresca cada 3 segundos
          client.println("<meta http-equiv=\"refresh\" content=\"3\">");
          client.println("<big><b>Seta43_Arduino</b></big><br>");
          client.print("xsetaseta@gmail.com <br>");
          client.print("Control de LEDS <br>");
          client.println("<hr>");

          client.print("<form method=get><input type=submit name=valor value=Encender_Todos>");
          client.println("<input type=submit name=valor value=Apagar_todos></form>");
          client.println("<hr>");
          client.print("<form method=get><input type=submit name=valor value=1DIG2>");
          client.println("<input type=submit name=valor value=0DIG2> DIG2=");
          client.println(digitalRead(2));
          client.println("</form>");
          client.print("<form method=get><input type=submit name=valor value=1DIG3>");
          client.println("<input type=submit name=valor value=0DIG3> DIG3=");
          client.println(digitalRead(3));
          client.println("</form>");
          client.print("<form method=get><input type=submit name=valor value=1DIG5>");
          client.println("<input type=submit name=valor value=0DIG5> DIG5=");
          client.println(digitalRead(5));
          client.println("</form>");
          client.print("<form method=get><input type=submit name=valor value=1DIG6>");
          client.println("<input type=submit name=valor value=0DIG6> DIG6=");
          client.println(digitalRead(6));
          client.println("</form>");
          client.print("<form method=get><input type=submit name=valor value=1DIG7>");
          client.println("<input type=submit name=valor value=0DIG7> DIG7=");
          client.println(digitalRead(7));
          client.println("</form>");
          client.print("<form method=get><input type=submit name=valor value=1DIG8>");
          client.println("<input type=submit name=valor value=0DIG8> DIG8=");
          client.println(digitalRead(8));
          client.println("</form>");
          client.print("<form method=get><input type=submit name=valor value=1DIG9>");
          client.println("<input type=submit name=valor value=0DIG9> DIG9=");
          client.println(digitalRead(9));
          client.println("</form>");
          client.println("<hr>");

          for ( z = 0; z < 6; z++) {
            sensorReading = analogRead(z);
            client.print("Analog input ");
            client.print("<font color=red>");
            client.print(z);
            client.print("</font>");
            client.print(" is ");
            client.print("<font color=blue>");
            client.print(sensorReading);
            client.print("</font>");
            client.println("<br />");
          }

           client.println("<hr>");

          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 disonnected");

  }
     bandera=0;
}

void colocar()
{
    if(readString.indexOf("1DIG2") >0){ digitalWrite(2, HIGH); goto salir;}
    if(readString.indexOf("0DIG2") >0){ digitalWrite(2, LOW); goto salir;}

    if(readString.indexOf("1DIG3") >0){ digitalWrite(3, HIGH);goto salir;}
    if(readString.indexOf("0DIG3") >0){ digitalWrite(3, LOW);goto salir;}

    if(readString.indexOf("1DIG5") >0){ digitalWrite(5, HIGH);goto salir;}
    if(readString.indexOf("0DIG5") >0){ digitalWrite(5, LOW);goto salir;}

    if(readString.indexOf("1DIG6") >0){ digitalWrite(6, HIGH);goto salir;}
    if(readString.indexOf("0DIG6") >0){ digitalWrite(6, LOW);goto salir;}

    if(readString.indexOf("1DIG7") >0){ digitalWrite(7, HIGH);goto salir;}
    if(readString.indexOf("0DIG7") >0){ digitalWrite(7, LOW);goto salir;}

    if(readString.indexOf("1DIG8") >0){ digitalWrite(8, HIGH);goto salir;}
    if(readString.indexOf("0DIG8") >0){ digitalWrite(8, LOW);goto salir;}

    if(readString.indexOf("1DIG9") >0){ digitalWrite(9, HIGH);goto salir;}
    if(readString.indexOf("0DIG9") >0){ digitalWrite(9, LOW);goto salir;}

    if(readString.indexOf("Encende") >0){ encender(); goto salir;}
    if(readString.indexOf("Apagar") >0){ apagar();goto salir;}
salir:
;
}

void encender()
{
  digitalWrite(2, HIGH); digitalWrite(3, HIGH); digitalWrite(5, HIGH);digitalWrite(6, HIGH);
  digitalWrite(7, HIGH);digitalWrite(8, HIGH);digitalWrite(9, HIGH);
}

void apagar()
{
  digitalWrite(2, LOW);digitalWrite(3, LOW);digitalWrite(5, LOW);digitalWrite(6, LOW);
  digitalWrite(7, LOW);digitalWrite(8, LOW);digitalWrite(9, LOW);
}

Programa sin optimizar.

WebSerLedV2_mini.ino // SETA43
// Modificacion 19-12-2012
//webserver v2mini

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

//numero de MAC
//numero de ip, depende de tu red

byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
IPAddress ip(192,168,2, 177);

String readString = String(20);
byte bandera=0;
byte z;
char c;
int sensorReading;
EthernetClient client;

const byte PinOut[] = { 2, 3, 5, 6, 7, 8, 9};

EthernetServer server(80);

void setup() {
  Serial.begin(9600);
   while (!Serial) { }

  Ethernet.begin(mac, ip);
  server.begin();
  Serial.print("server is at ");
  Serial.println(Ethernet.localIP());
  for(z=0;z<7;z++) pinMode(PinOut[z],OUTPUT);
}

void loop() {
  client = server.available();
  if (client) {
    Serial.println("new client");

    boolean currentLineIsBlank = true;
    while (client.connected()) {
      if (client.available()) {
        c = client.read();
        Serial.write(c);
        if(c=='?' && bandera==0)
          {
           readString="";
           for(z=0;z<14;z++)
             {
               c = client.read();
               readString +=c;
             }
           Serial.println(readString);
           colocar();
           bandera=1;
          }

        if (c == '\n' && currentLineIsBlank) {

          // Manda la cabecera del http
          client.println("HTTP/1.1 200 OK");
          client.println("Content-Type: text/html");
          client.println("Connnection: close");
          client.println();
          client.println("<!DOCTYPE HTML>");
          client.println("<html>");
          // Refresca cada 3 segundos
          client.println("<meta http-equiv=\"refresh\" content=\"3\">");
          client.println("<big><b>Seta43_Arduino</b></big><br>");
          client.print("xsetaseta@gmail.com <br>");
          client.print("Control 6 salidas digitales y 6 entradas analogicas <br>");
          client.println("<hr>");

          FormSubmit(); client.print("Encender_Todos>");
          PrintSubmit();    client.println("Apagar_todos></form>");
          client.println("<hr>");

for(z=0;z<7;z++)
{
FormSubmit(); client.print("1DIG");
client.print(PinOut[z]); client.print(">");
PrintSubmit(); client.print("0DIG");
client.print(PinOut[z]); client.print(">");
client.print(" DIG");client.print(PinOut[z]); client.print("=");
client.print(digitalRead(PinOut[z]));
PrintForm();
}

          client.println("<hr>");

          for ( z = 0; z < 6; z++)
{
sensorReading = analogRead(z);
client.print("Analog input ");
client.print("<font color=red>");
client.print(z);
client.print("</font>");
client.print(" is ");
client.print("<font color=blue>");
client.print(sensorReading);
client.print("</font>");
client.println("<br />");
}

          client.println("<hr>");
          client.println("</html>");
          break;
         }
        if (c == '\n')       currentLineIsBlank = true;
            else
              if (c != '\r') currentLineIsBlank = false;
      }
    }
    delay(1);
    client.stop();
    Serial.println("client disonnected");
  }
  bandera=0;
}

void FormSubmit()
{
PrintFormIn();
PrintSubmit();
}

void PrintSubmit()
{
client.print("<input type=submit name=valor value=");
}

void PrintFormIn()
{
  client.print("<form method=get>");
}

void PrintForm()
{
  client.println("</form>");
}

void colocar()
{
    if(readString.indexOf("1DIG2") >0){ digitalWrite(2, HIGH); goto salir;}
    if(readString.indexOf("0DIG2") >0){ digitalWrite(2, LOW); goto salir;}

    if(readString.indexOf("1DIG3") >0){ digitalWrite(3, HIGH);goto salir;}
    if(readString.indexOf("0DIG3") >0){ digitalWrite(3, LOW);goto salir;}

    if(readString.indexOf("1DIG5") >0){ digitalWrite(5, HIGH);goto salir;}
    if(readString.indexOf("0DIG5") >0){ digitalWrite(5, LOW);goto salir;}

    if(readString.indexOf("1DIG6") >0){ digitalWrite(6, HIGH);goto salir;}
    if(readString.indexOf("0DIG6") >0){ digitalWrite(6, LOW);goto salir;}

    if(readString.indexOf("1DIG7") >0){ digitalWrite(7, HIGH);goto salir;}
    if(readString.indexOf("0DIG7") >0){ digitalWrite(7, LOW);goto salir;}

    if(readString.indexOf("1DIG8") >0){ digitalWrite(8, HIGH);goto salir;}
    if(readString.indexOf("0DIG8") >0){ digitalWrite(8, LOW);goto salir;}

    if(readString.indexOf("1DIG9") >0){ digitalWrite(9, HIGH);goto salir;}
    if(readString.indexOf("0DIG9") >0){ digitalWrite(9, LOW);goto salir;}

    if(readString.indexOf("Encende") >0){ for(z=0;z<7;z++) digitalWrite(PinOut[z],HIGH); goto salir; }
    if(readString.indexOf("Apagar") >0) { for(z=0;z<7;z++) digitalWrite(PinOut[z],LOW);   goto salir; }
salir:
;
}

Programa optimizado.

Saludos
Juan Galaz

Bibliografía:

Libro: Arduino Cookbook
http://unicarlos.com/pezazul/index.php?articulo=4
http://blogdoje.com.br/2010/04/11/teste-do-shield-ethernet-seeeduino/
http://www.scienceprog.com/getting-hands-on-arduino-ethernet-shield/
http://rickymoga.blogspot.com.es/search/label/ARDUINO
https://docs.google.com/document/d/1VR8dHVNQ6LbWGyyi4mTJv6mF8QK7xVD_lj4r6pWevZc/edit?pli=1
http://pepechorva.com/wordPress/domotica/
http://www.htmlquick.com/es/reference/tags/input.html#hidden