I built a code for Arduino + Ethernet Shield ... Relay webserver or Led webserver- works well but in my webpage apears some errors .....
//*******************************
#include <SPI.h>
#include <Ethernet.h>
#include <avr/pgmspace.h>
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED }; //physical mac address
byte ip[] = { 192, 168, 137, 103 }; // ip in lan
byte gateway[] = { 192, 168, 137, 255 }; // internet access via router
byte subnet[] = { 255, 255, 255, 0 }; //subnet mask
Server server(80); // server port
#define A_pin 9
#define B_pin 2
#define C_pin 3
#define D_pin 4
#define E_pin 5
#define F_pin 6
#define Y_pin 7
#define Z_pin 8
char link[]= ""; // link data
String readString = String(70); // string for fetching data from address
boolean Ledstatus[8];
//var globale, pt afisarea etichetelor(cap de tabel)
char font_gray[] ="<font color=\"black\" size=\"5\">";
char font_green[]="<font color=\"green\" size=\"5\">";
prog_char string0[] PROGMEM = "<font color=\"gray\" size=\"2\"><input type='submit' name='A' value='1'>ON<br><input type='submit' name='A' value='0'>OFF</td>";
prog_char string1[] PROGMEM = "<font color=\"gray\" size=\"2\"><input type='submit' name='B' value='1'>ON<br><input type='submit' name='B' value='0'>OFF</td>";
prog_char string2[] PROGMEM = "<font color=\"gray\" size=\"2\"><input type='submit' name='C' value='1'>ON<br><input type='submit' name='C' value='0'>OFF</td>";
prog_char string3[] PROGMEM = "<font color=\"gray\" size=\"2\"><input type='submit' name='D' value='1'>ON<br><input type='submit' name='D' value='0'>OFF</td>";
prog_char string4[] PROGMEM = "<font color=\"gray\" size=\"2\"><input type='submit' name='E' value='1'>ON<br><input type='submit' name='E' value='0'>OFF</td>";
prog_char string5[] PROGMEM = "<font color=\"gray\" size=\"2\"><input type='submit' name='F' value='1'>ON<br><input type='submit' name='F' value='0'>OFF</td>";
prog_char string6[] PROGMEM = "<font color=\"gray\" size=\"2\"><input type='submit' name='Y' value='1'>ON<br><input type='submit' name='Y' value='0'>OFF</td>";
prog_char string7[] PROGMEM = "<font color=\"gray\" size=\"2\"><input type='submit' name='Z' value='1'>ON<br><input type='submit' name='Z' value='0'>OFF</td>";
PROGMEM const char *string_table[] =
// change "string_table" name to suit
{ string0,
string1,
string2,
string3,
string4,
string5,
string6,
string7};
char buffer[140]; //lungimea max a unui string din PROGMEM +1
void setup()
{
// Serial.begin(57600); //enable serial datada print
Ethernet.begin(mac, ip, gateway, subnet); //start Ethernet
pinMode(A_pin, OUTPUT); //Set pin 4 to output
pinMode(B_pin, OUTPUT);
pinMode(C_pin, OUTPUT);
pinMode(D_pin, OUTPUT);
pinMode(E_pin, OUTPUT);
pinMode(F_pin, OUTPUT);
pinMode(Y_pin, OUTPUT);
pinMode(Z_pin, OUTPUT);
Serial.print("Started server");
}
void loop(){
Client client = server.available(); // Create a client connection
if (client) {
while (client.connected()) {
if (client.available()) {
char c = client.read();
if (readString.length() < 70) { //read char by char HTTP request
readString.concat(c); } //store characters to string
Serial.print(c); //output chars to serial port for debugging
if (c == '\n') { //if HTTP request has ended
//Serial.println("");
int Ae = readString.indexOf("A=");
int Be = readString.indexOf("B=");
int Ce = readString.indexOf("C=");
int De = readString.indexOf("D=");
int Ee = readString.indexOf("E=");
int Fe = readString.indexOf("F=");
int Ye = readString.indexOf("Y=");
int Ze = readString.indexOf("Z=");
//lets check if LED should be lighted
if (readString.substring(Ae,(Ae+3)) == "A=1") { //led has to be turned ON
digitalWrite(A_pin, HIGH); // set the LED on
//Serial.println("A_pin paa");
Ledstatus[0] = true;
}
if (readString.substring(Ae,(Ae+3))== "A=0") { //led has to be turned OFF
digitalWrite(A_pin, LOW); // set the LED OFF
//Serial.println("A_pin av");
Ledstatus[0] = false;
}
if (readString.substring(Be,(Be+3)) == "B=1") {
digitalWrite(B_pin, HIGH);
Ledstatus[1] = true;
}
if (readString.substring(Be,(Be+3)) == "B=0") {
digitalWrite(B_pin, LOW);
Ledstatus[1] = false;
}
if (readString.substring(Ce,(Ce+3)) == "C=0") {
digitalWrite(C_pin, LOW);
Ledstatus[2]=false;
}
if (readString.substring(Ce,(Ce+3)) == "C=1") {
digitalWrite(C_pin, HIGH);
Ledstatus[2]=true;
}
if (readString.substring(De,(De+3)) == "D=0") {
digitalWrite(D_pin, LOW);
Ledstatus[3]=false;
}
if (readString.substring(De,(De+3)) == "D=1") {
digitalWrite(D_pin, HIGH);
Ledstatus[3]=true;
}
if (readString.substring(Ee,(Ee+3)) == "E=0") {
digitalWrite(E_pin, LOW);
Ledstatus[4]=false;
}
if (readString.substring(Ee,(Ee+3)) == "E=1") {
digitalWrite(E_pin, HIGH);
Ledstatus[4]=true;
}
if (readString.substring(Fe,(Fe+3)) == "F=0") {
digitalWrite(F_pin, LOW);
Ledstatus[5]=false;
}
if (readString.substring(Fe,(Fe+3)) == "F=1") {
digitalWrite(F_pin, HIGH);
Ledstatus[5]=true;
}
if (readString.substring(Ye,(Ye+3)) == "Y=0") {
digitalWrite(Y_pin, LOW);
Ledstatus[6]=false;
}
if (readString.substring(Ye,(Ye+3)) == "Y=1") {
digitalWrite(Y_pin, HIGH);
Ledstatus[6]=true;
}
if (readString.substring(Ze,(Ze+3)) == "Z=0") {
digitalWrite(Z_pin, LOW);
Ledstatus[7]=false;
}
if (readString.substring(Ze,(Ze+3)) == "Z=1") {
digitalWrite(Z_pin, HIGH);
Ledstatus[7]=true;
}
client.println("HTTP/1.1 200 OK"); // now output HTML data starting with standart header
client.println("Content-Type: text/html");
client.println();
client.print ("<body style=background-color:white>"); //set background to white
// HTML Code
client.println("<br />");
client.println("<font color=\"blue\"><h2>WEB SERVER PRO</font></h2>");//send first heading
//table
client.println("<form><table border=2><tr>");
for(int i=0; i<8; i++){
client.println("<td>");
if(Ledstatus[i]) client.println(font_green);
else client.println(font_gray);
client.println("<b>Led<h4>");
client.println(i+1);
client.println("</b></font><br />");
strcpy_P(buffer, (char*)pgm_read_word(&(string_table[i])));
client.println(buffer);
if(i==3) client.println("</tr><tr>"); //new row
}
client.println("</tr></table></form> <br />");
client.println("</body></html>");
client.stop();//stopping client
//Serial.println("Stopper klient");
//clearing string for next read
readString="";
}}}}}
