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Hi, first of all sry for my bad english, i use an ENC28J60 and i want to control 3 led through the WEB. i have the sketch but something strange is happening, take a look on ;


Code:
#include "etherShield.h"


// please modify the following two lines. mac and ip have to be unique
// in your local area network. You can not have the same numbers in
// two devices:
static uint8_t mymac[6] = {0x54,0x55,0x58,0x10,0x00,0x24};
static uint8_t myip[4] = {192,168,1,15};
static char baseurl[]="http://192.168.1.15/";
static uint16_t mywwwport =80; // listen port for tcp/www (max range 1-254)



#define BUFFER_SIZE 1500
static uint8_t buf[BUFFER_SIZE+1];
#define STR_BUFFER_SIZE 200
static char strbuf[STR_BUFFER_SIZE+1];

EtherShield es=EtherShield();

// prepare the webpage by writing the data to the tcp send buffer
uint16_t print_webpage(uint8_t *buf, byte on_off1, byte on_off2, byte on_off3);
int8_t analyse_cmd(char *str);

// LED cathode connects the Pin4, anode to 5V through 1K resistor
#define LED_PIN4  4
#define LED_PIN5  5
#define LED_PIN6  6

void setup(){
 
   /*initialize enc28j60*/
es.ES_enc28j60Init(mymac);
   es.ES_enc28j60clkout(2); // change clkout from 6.25MHz to 12.5MHz
   delay(10);
       
/* Magjack leds configuration, see enc28j60 datasheet, page 11 */
// LEDA=greed LEDB=yellow
//
// 0x880 is PHLCON LEDB=on, LEDA=on
// enc28j60PhyWrite(PHLCON,0b0000 1000 1000 00 00);
es.ES_enc28j60PhyWrite(PHLCON,0x880);
delay(500);
//
// 0x990 is PHLCON LEDB=off, LEDA=off
// enc28j60PhyWrite(PHLCON,0b0000 1001 1001 00 00);
es.ES_enc28j60PhyWrite(PHLCON,0x990);
delay(500);
//
// 0x880 is PHLCON LEDB=on, LEDA=on
// enc28j60PhyWrite(PHLCON,0b0000 1000 1000 00 00);
es.ES_enc28j60PhyWrite(PHLCON,0x880);
delay(500);
//
// 0x990 is PHLCON LEDB=off, LEDA=off
// enc28j60PhyWrite(PHLCON,0b0000 1001 1001 00 00);
es.ES_enc28j60PhyWrite(PHLCON,0x990);
delay(500);
//
  // 0x476 is PHLCON LEDA=links status, LEDB=receive/transmit
  // enc28j60PhyWrite(PHLCON,0b0000 0100 0111 01 10);
  es.ES_enc28j60PhyWrite(PHLCON,0x476);
delay(100);
       
  //init the ethernet/ip layer:
  es.ES_init_ip_arp_udp_tcp(mymac,myip,80);
 
  pinMode(LED_PIN4, OUTPUT);
  digitalWrite(LED_PIN4, HIGH);  // switch off LED
        pinMode(LED_PIN5, OUTPUT);
  digitalWrite(LED_PIN5, HIGH);  // switch off LED
        pinMode(LED_PIN6, OUTPUT);
  digitalWrite(LED_PIN6, HIGH);  // switch off LED
}

void loop(){
  uint16_t plen, dat_p;
  int8_t cmd;
  byte on_off1 = 1;
  byte on_off2 = 1;
  byte on_off3 = 1;

  plen = es.ES_enc28j60PacketReceive(BUFFER_SIZE, buf);

/*plen will ne unequal to zero if there is a valid packet (without crc error) */
  if(plen!=0){
           
    // arp is broadcast if unknown but a host may also verify the mac address by sending it to a unicast address.
    if(es.ES_eth_type_is_arp_and_my_ip(buf,plen)){
      es.ES_make_arp_answer_from_request(buf);
      return;
    }

    // check if ip packets are for us:
    if(es.ES_eth_type_is_ip_and_my_ip(buf,plen)==0){
      return;
    }
   
    if(buf[IP_PROTO_P]==IP_PROTO_ICMP_V && buf[ICMP_TYPE_P]==ICMP_TYPE_ECHOREQUEST_V){
      es.ES_make_echo_reply_from_request(buf,plen);
      return;
    }
   
    // tcp port www start, compare only the lower byte
    if (buf[IP_PROTO_P]==IP_PROTO_TCP_V&&buf[TCP_DST_PORT_H_P]==0&&buf[TCP_DST_PORT_L_P]==mywwwport){
      if (buf[TCP_FLAGS_P] & TCP_FLAGS_SYN_V){
         es.ES_make_tcp_synack_from_syn(buf); // make_tcp_synack_from_syn does already send the syn,ack
         return;     
      }
      if (buf[TCP_FLAGS_P] & TCP_FLAGS_ACK_V){
        es.ES_init_len_info(buf); // init some data structures
        dat_p=es.ES_get_tcp_data_pointer();
        if (dat_p==0){ // we can possibly have no data, just ack:
          if (buf[TCP_FLAGS_P] & TCP_FLAGS_FIN_V){
            es.ES_make_tcp_ack_from_any(buf);
          }
          return;
        }
        if (strncmp("GET ",(char *)&(buf[dat_p]),4)!=0){

          // head, post and other methods for possible status codes see:
            // http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html
            plen=es.ES_fill_tcp_data_p(buf,0,PSTR("HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n<h1>200 OK</h1>"));
            goto SENDTCP;
        }
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hx all for support  smiley-wink


NEXT:


Code:
if (strncmp("/ ",(char *)&(buf[dat_p+4]),2)==0){
                plen=print_webpage(buf, on_off1, on_off2, on_off3);
            goto SENDTCP;
         }
        cmd=analyse_cmd((char *)&(buf[dat_p+5]));
       
        if (cmd==2){
                on_off1=1;
        digitalWrite(LED_PIN4, LOW);  // switch on LED
        }
        else if (cmd==3){
                on_off1=0;
        digitalWrite(LED_PIN4, HIGH);  // switch off LED
        }
        else if (cmd==4){
                on_off2=1;
        digitalWrite(LED_PIN5, LOW);  // switch on LED
        }
        else if (cmd==5){
                on_off2=0;
        digitalWrite(LED_PIN5, HIGH);  // switch off LED
        }
       
        else if (cmd==6){
                on_off3=1;
        digitalWrite(LED_PIN6, LOW);  // switch on LED
        }
        else if (cmd==7){
                on_off3=0;
        digitalWrite(LED_PIN6, HIGH);  // switch off LED
        }

        plen=print_webpage(buf, on_off1, on_off2, on_off3);
       
           plen=print_webpage(buf, on_off1, on_off2, on_off3);
SENDTCP:  es.ES_make_tcp_ack_from_any(buf); // send ack for http get
           es.ES_make_tcp_ack_with_data(buf,plen); // send data       
      }
    }
  }
       
}
// The returned value is stored in the global var strbuf
uint8_t find_key_val(char *str,char *key)
{
        uint8_t found=0;
        uint8_t i=0;
        char *kp;
        kp=key;
        while(*str &&  *str!=' ' && found==0){
                if (*str == *kp){
                        kp++;
                        if (*kp == '\0'){
                                str++;
                                kp=key;
                                if (*str == '='){
                                        found=1;
                                }
                        }
                }else{
                        kp=key;
                }
                str++;
        }
        if (found==1){
                // copy the value to a buffer and terminate it with '\0'
                while(*str &&  *str!=' ' && *str!='&' && i<STR_BUFFER_SIZE){
                        strbuf[i]=*str;
                        i++;
                        str++;
                }
                strbuf[i]='\0';
        }
        return(found);
}

int8_t analyse_cmd(char *str)
{
        int8_t r=-1;
     
        if (find_key_val(str,"cmd")){
                if (*strbuf < 0x3a && *strbuf > 0x2f){
                        // is a ASCII number, return it
                        r=(*strbuf-0x30);
                }
        }
        return r;
}


uint16_t print_webpage(uint8_t *buf, byte on_off1, byte on_off2, byte  on_off3)
{

       int i=0;
   
       
        uint16_t plen;
       
 
       
        plen=es.ES_fill_tcp_data_p(buf,0,PSTR("HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n"));
    plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<left><img src=\"http://i915.photobucket.com/albums/ac357/mistermpss/beaucetelecomlogo.png\"  ></LEFT> "));
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<body bgcolor=\"#000000\"> "));
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<font color=\"#FFFFFF\"><FONT FACE=\"arial\"><RIGHT><I><FONT SIZE=1>BTCAD.<U> V1.0 beta</U></h1></FONT></FONT></I> </RIGHT> "));
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<FONT SIZE=3> <font color=\"#00FF00\"></h1><a href=\"http://192.168.1.1\">Cliquez ici pour acc&egrave;der &agrave; vos cam&eacute;ras<a></FONT></FONT>"));
   

        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<hr><br><form METHOD=get action=\""));
        plen=es.ES_fill_tcp_data(buf,plen,baseurl);
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("\">"));
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<h2><font color=\"#FFFFFF\"> S&eacute;lection  </h2> "));
  plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<h1><font color=\"#FFFFFF\"> "));
 
         
       
        if(on_off1){
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<input type=hidden name=cmd value=3>"));
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<input type=submit value=\"Moteur #1 ON \"></form>"));
          }
         
        else {
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<input type=hidden name=cmd value=2>"));
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<input type=submit value=\"Moteur #1 OFF\"></form>"));
     }


         
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<br><form METHOD=get action=\""));
        plen=es.ES_fill_tcp_data(buf,plen,baseurl);
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("\">"));
 
       
       

        if(on_off2){
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<input type=hidden name=cmd value=5>"));
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<input type=submit value=\"Moteur #2 ON\"></form>"));
        }
           
        else {
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<input type=hidden name=cmd value=4>"));
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<input type=submit value=\"Moteur #2 OFF\"></form>"));
         
         
             }
           
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<br><form METHOD=get action=\""));
        plen=es.ES_fill_tcp_data(buf,plen,baseurl);
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("\">"));
   
       
       
       
        if(on_off3){
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<input type=hidden name=cmd value=7>"));
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<input type=submit value=\"Moteur #3 ON\"></form>"));
        }
        else  {
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<input type=hidden name=cmd value=6>"));
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<input type=submit value=\"Moteur #3 OFF \"></form>"));
        }
       
       
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("</CENTER><hr><hr><FONT FACE=\"arial\"><FONT SIZE=1>Une connexion internet est requise pour acc&egrave;der &agrave; ce lien:</font><FONT SIZE=5> <p> Assistance en ligne <a href=\"http://www.google.com\">www.beaucetelecom.ca<a></font></FONT>"));
 
        return(plen);
}
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Could you elaborate a little on what's going wrong? There's a lot of code to wade through in those two posts, tricky without some idea what we're looking for.
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That code, looking at it briefly, looks generally okay... and very similar to the code I put in my (working!) Arduserver.

However: I found that I could add very, very little to the code before weird things happened because the memory or a buffer in the ethernet chip, or SOMETHING was becoming too full.

Cut out anything you can, try code again, add back things a very little at a time.

Then again... I was using an old Arduino clone with very little memory.... or maybe it was a too-small buffer in the ethernet interface?
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Hi i convert code from nuelectronics for Arduino-ethernet enc28j60 for 4 led control....and work fine....i want put and analog input how i convert code?Thanks.

Code:
#include "etherShield.h"

static uint8_t mymac[6] = {0x54,0x55,0x58,0x10,0x00,0x24};
static uint8_t myip[4] = {192,168,1,15};
static char baseurl[]="/";// ADD http://192.168.1.15
static uint16_t mywwwport =80; // listen port for tcp/www (max range 1-254)



#define BUFFER_SIZE 1500
static uint8_t buf[BUFFER_SIZE+1];
#define STR_BUFFER_SIZE 200
static char strbuf[STR_BUFFER_SIZE+1];

EtherShield es=EtherShield();

// prepare the webpage by writing the data to the tcp send buffer
uint16_t print_webpage(uint8_t *buf, byte on_off1, byte on_off2, byte on_off3,byte on_off4);
int8_t analyse_cmd(char *str);
//int8_t sensorPin = A3;  // designate the input pin for a sensor... a lm35 used in example
//int sensorValue=0; // variable to store the value coming from the sensor

// LED cathode connects the Pin4, anode to 5V through 1K resistor
#define LED_PIN4  4
#define LED_PIN5  5
#define LED_PIN6  6
#define LED_PIN7  7

//int temp1_pin = A0;
//int temp=0;

void setup(){
  
   /*initialize enc28j60*/


  //init the ethernet/ip layer:
  es.ES_init_ip_arp_udp_tcp(mymac,myip,80);
  
  pinMode(LED_PIN4, OUTPUT);
  digitalWrite(LED_PIN4, LOW);  // switch off LED
        pinMode(LED_PIN5, OUTPUT);
  digitalWrite(LED_PIN5, LOW);  // switch off LED
        pinMode(LED_PIN6, OUTPUT);
  digitalWrite(LED_PIN6, LOW);  // switch off LED
        pinMode(LED_PIN7, OUTPUT);
  digitalWrite(LED_PIN7, LOW);  // switch off LED
}

void loop(){
  uint16_t plen, dat_p;
  int8_t cmd;
  byte on_off1 = 1;
  byte on_off2 = 1;
  byte on_off3 = 1;
  byte on_off4 = 1;
  
   on_off1 = digitalRead(LED_PIN4);
   on_off2 = digitalRead(LED_PIN5);
   on_off3 = digitalRead(LED_PIN6);
   on_off4 = digitalRead(LED_PIN7);
  
   //temp= analogRead(temp1_pin);
  //  sensorValue=analogRead(sensorPin);
     //   float voltage=sensorValue*3.3;
      //        voltage/=1024.0;
      //  float tempC =(voltage-0.5)*100;

  plen = es.ES_enc28j60PacketReceive(BUFFER_SIZE, buf);

/*plen will ne unequal to zero if there is a valid packet (without crc error) */
  if(plen!=0){
         
    // arp is broadcast if unknown but a host may also verify the mac address by sending it to a unicast address.
    if(es.ES_eth_type_is_arp_and_my_ip(buf,plen)){
      es.ES_make_arp_answer_from_request(buf);
      return;
    }

    // check if ip packets are for us:
  
                plen=print_webpage(buf, on_off1, on_off2, on_off3, on_off4);
            goto SENDTCP;
         }
        cmd=analyse_cmd((char *)&(buf[dat_p+5]));
        
        if (cmd==2){
                on_off1=1;
         digitalWrite(LED_PIN4, HIGH);  // switch on LED
        }
        else if (cmd==3){
                on_off1=0;
         digitalWrite(LED_PIN4, LOW);  // switch off LED
        }
        else if (cmd==4){
                on_off2=1;
         digitalWrite(LED_PIN5, HIGH);  // switch on LED
        }
        else if (cmd==5){
                on_off2=0;
         digitalWrite(LED_PIN5, LOW);  // switch off LED
        }
        
        else if (cmd==6){
                on_off3=1;
         digitalWrite(LED_PIN6, HIGH);  // switch on LED
        }
        else if (cmd==7){
                on_off3=0;
         digitalWrite(LED_PIN6, LOW);  // switch off LED
        }
         else if (cmd==8){
                on_off4=1;
         digitalWrite(LED_PIN7, HIGH);  // switch on LED
        }
        else if (cmd==9){
                on_off4=0;
         digitalWrite(LED_PIN7, LOW);  // switch off LED
        }
        plen=print_webpage(buf, on_off1, on_off2, on_off3,on_off4);
        
           plen=print_webpage(buf, on_off1, on_off2, on_off3,on_off4);
SENDTCP:  es.ES_make_tcp_ack_from_any(buf); // send ack for http get
           es.ES_make_tcp_ack_with_data(buf,plen); // send data      
      }
    }
  }
        
}
// The returned value is stored in the global var strbuf
uint8_t find_key_val(char *str,char *key)
{
        uint8_t found=0;
        uint8_t i=0;
        
        return(found);
}

int8_t analyse_cmd(char *str)
{
        int8_t r=-1;
    
        if (find_key_val(str,"cmd")){
                if (*strbuf < 0x3a && *strbuf > 0x2f){
                        // is a ASCII number, return it
                        r=(*strbuf-0x30);
                }
        }
        return r;
}


uint16_t print_webpage(uint8_t *buf, byte on_off1, byte on_off2, byte  on_off3,byte on_off4)
{

       int i=0;
    
        
        uint16_t plen;
        
       // sensorValue=analogRead(sensorPin);
        //float voltage=sensorValue*3.3;
          //    voltage/=1024.0;
       // float tempC =(voltage-0.5)*100;      
        
 
        
        plen=es.ES_fill_tcp_data_p(buf,0,PSTR("HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n"));
   // plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<left><img src=\"http://i915.photobucket.com/albums/ac357/mistermpss/beaucetelecomlogo.png\"  ></LEFT> "));
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<body bgcolor=\"#EEEEEE\"> "));
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<font color=\"#000000\"><FONT FACE=\"arial\"><RIGHT><I><FONT SIZE=2>REMOTE CONTROL PANEL.<U> V1.0 A.K 25.11.2011 </U></h1></FONT></FONT></I> </RIGHT> "));
   // plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<FONT SIZE=3> <font color=\"#00FF00\"></h1><a href=\"http://192.168.1.1\">Cliquez ici pour acc&egrave;der &agrave; vos cam&eacute;ras<a></FONT></FONT>"));
    
        //plen=es.ES_fill_tcp_data_p(buf,plen,PSTR(temp)
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<hr><br><form METHOD=get action=\""));
        plen=es.ES_fill_tcp_data(buf,plen,baseurl);
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("\">"));
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<h2><font color=\"#000000\"> SELECT DEVICE </h2> "));
  plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<h1><font color=\"#FFFFFF\"> "));
 
        
        
        if(on_off1){
         plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<input type=hidden name=cmd value=3>"));
         plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<input type=submit value=\"Device #1 ON \"></form>"));
          }
        
        else {
         plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<input type=hidden name=cmd value=2>"));
         plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<input type=submit value=\"Device #1 OFF\"></form>"));
     }


          
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<br><form METHOD=get action=\""));
        plen=es.ES_fill_tcp_data(buf,plen,baseurl);
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("\">"));
 
        
        

        if(on_off2){
         plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<input type=hidden name=cmd value=5>"));
         plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<input type=submit value=\"Device #2 ON\"></form>"));
        }
          
        else {
         plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<input type=hidden name=cmd value=4>"));
         plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<input type=submit value=\"Device #2 OFF\"></form>"));
        
        
             }
          
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<br><form METHOD=get action=\""));
        plen=es.ES_fill_tcp_data(buf,plen,baseurl);
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("\">"));
    
      
        
        
        if(on_off3){
         plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<input type=hidden name=cmd value=7>"));
         plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<input type=submit value=\"Device #3 ON\"></form>"));
        }
        else  {
         plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<input type=hidden name=cmd value=6>"));
         plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<input type=submit value=\"Device #3 OFF \"></form>"));
        }
        
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<br><form METHOD=get action=\""));
        plen=es.ES_fill_tcp_data(buf,plen,baseurl);
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("\">"));
    
      
        
        
        if(on_off4){
         plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<input type=hidden name=cmd value=9>"));
         plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<input type=submit value=\"Device #4 ON\"></form>"));
        }
        else  {
         plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<input type=hidden name=cmd value=8>"));
         plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<input type=submit value=\"Device #4 OFF \"></form>"));
        }
        
  
        return(plen);
}

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Web / sms / bluetooth / arduino / android remote control. Home Automation projects.
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I would do that thru the REST protocol, much more elegant.

Take a look here: http://blog.thiseldo.co.uk/?p=599
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I made a slightly simplified library for this device, you may like to look at this:

http://srmonk.blogspot.com/2010/03/simplified-ethernet-library-for-28j60.html
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My ethernet card enc28j60 no work after 30 or 60 minutes...need restart...no display on web....How i solve this problem?I use external power supply 9volt.Thanks.
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My ethernet card enc28j60 no work after 30 or 60 minutes...need restart...no display on web....How i solve this problem?I use external power supply 9volt.Thanks.

sounds like the chip is over heating
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Quote
I use external power supply 9volt.

Is that a 9v battery or a 9v wall power supply?
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My ethernet card enc28j60 no work after 30 or 60 minutes...need restart...no display on web....How i solve this problem?I use external power supply 9volt.Thanks.

sounds like the chip is over heating

Possibly the regulator chip, but that's easy to test - it will be burning hot.

Another possibility is running out of RAM.
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