Arduino Webserver with Temperature Monitor / Control

I think that e-mail can send only arduino mega 2560, arduino uno insufficient memory, if you want to supplement the program

http://www.lucadentella.it/en/2012/12/16/enc28j60-e-arduino-12/, https://raw.github.com/lucadentella/enc28j60_tutorial/master/_12_SkebbySMS/_12_SkebbySMS.ino
SMTP protocol problems · Issue #65 · njh/EtherCard · GitHub
http://forum.jeelabs.net/comment/9920#comment-9920

Okay i think that would help.

I'm realy bad in programming, My project is to take the entire web temperature fo enc28j60 code and modify it to send email when the value is under or over the preset.

Thanks for help and shared links!

You really need a more powerful Arduino with more RAM (mega2560) or can try http://ksduino.org, http://open.sen.se/, https://www.thingspeak.com/ http://exosite.com/products/portals cloud. Ksduino and http://www.pushingbox.com/ support ENC28J60.

alvydas001:
You really need a more powerful Arduino with more RAM (mega2560) or can try ksduino.org, http://open.sen.se/, https://www.thingspeak.com/ http://exosite.com/products/portals cloud. Ksduino and http://www.pushingbox.com/ support ENC28J60.

Duemilanove + ethernetshield enc28j60 should be a great setup?

The full terms of reference in the scene!
Otherwise, there is nothing you will not respond.

alvydas001:
The full terms of reference in the scene!
Otherwise, there is nothing you will not respond.

Sry for my bad english... I don't understand.... :<

My English is very bad, too :slight_smile:
have to say what you wish to do so, must complete the task conditions, it is difficult to advise otherwise.

Speak French?

Okay, so I have the code right here :

#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)
// or on a different port:
//static char baseurl[]="http://10.0.0.24:88/";
//static uint16_t mywwwport =88; // listen port for tcp/www (max range 1-254)
//


#define BUFFER_SIZE 500
static uint8_t buf[BUFFER_SIZE+1];
#define STR_BUFFER_SIZE 22
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);
int8_t analyse_cmd(char *str);
// get current temperature
#define TEMP_PIN  3
void getCurrentTemp( int *sign, int *whole, int *fract);

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);
  
  // initialize DS18B20 datapin
    digitalWrite(TEMP_PIN, LOW);
    pinMode(TEMP_PIN, INPUT);      // sets the digital pin as input (logic 1)


}

void loop(){
  uint16_t plen, dat_p;
  int8_t cmd;

  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;
        }
if (strncmp("/ ",(char *)&(buf[dat_p+4]),2)==0){
                plen=print_webpage(buf);
            goto SENDTCP;
         }
        cmd=analyse_cmd((char *)&(buf[dat_p+5]));
        if (cmd==1){
             plen=print_webpage(buf);
        }
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)
{
        char temp_string[10];
        int i=0;
        //char *temp_string="100";
        
        uint16_t plen;
        
        getCurrentTemp(temp_string);
        
        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("<center><p><h1>Welcome to Arduino Ethernet Shield V1.0  </h1></p> "));
         
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<hr>
<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> Current Temperature is </h2> "));
 	plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<h1><font color=\"#00FF00\"> "));
         
       
        while (temp_string[i]) {
                buf[TCP_CHECKSUM_L_P+3+plen]=temp_string[i++];
                plen++;
        }

 	plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("  &#176C</font></h1>
 ") );
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<input type=hidden name=cmd value=1>"));
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<input type=submit value=\"Get Temperature\"></form>"));
        plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("</center><hr> <p> V1.0 <a href=\"http://www.nuelectronics.com\">www.nuelectronics.com<a>"));
  
        return(plen);
}


void OneWireReset(int Pin) // reset.  Should improve to act as a presence pulse
{
     digitalWrite(Pin, LOW);
     pinMode(Pin, OUTPUT); // bring low for 500 us
     delayMicroseconds(500);
     pinMode(Pin, INPUT);
     delayMicroseconds(500);
}

void OneWireOutByte(int Pin, byte d) // output byte d (least sig bit first).
{
   byte n;

   for(n=8; n!=0; n--)
   {
      if ((d & 0x01) == 1)  // test least sig bit
      {
         digitalWrite(Pin, LOW);
         pinMode(Pin, OUTPUT);
         delayMicroseconds(5);
         pinMode(Pin, INPUT);
         delayMicroseconds(60);
      }
      else
      {
         digitalWrite(Pin, LOW);
         pinMode(Pin, OUTPUT);
         delayMicroseconds(60);
         pinMode(Pin, INPUT);
      }

      d=d>>1; // now the next bit is in the least sig bit position.
   }
   
}

byte OneWireInByte(int Pin) // read byte, least sig byte first
{
    byte d, n, b;

    for (n=0; n<8; n++)
    {
        digitalWrite(Pin, LOW);
        pinMode(Pin, OUTPUT);
        delayMicroseconds(5);
        pinMode(Pin, INPUT);
        delayMicroseconds(5);
        b = digitalRead(Pin);
        delayMicroseconds(50);
        d = (d >> 1) | (b<<7); // shift d to right and insert b in most sig bit position
    }
    return(d);
}


void getCurrentTemp(char *temp)
{  
  int HighByte, LowByte, TReading, Tc_100, sign, whole, fract;

  OneWireReset(TEMP_PIN);
  OneWireOutByte(TEMP_PIN, 0xcc);
  OneWireOutByte(TEMP_PIN, 0x44); // perform temperature conversion, strong pullup for one sec

  OneWireReset(TEMP_PIN);
  OneWireOutByte(TEMP_PIN, 0xcc);
  OneWireOutByte(TEMP_PIN, 0xbe);

  LowByte = OneWireInByte(TEMP_PIN);
  HighByte = OneWireInByte(TEMP_PIN);
  TReading = (HighByte << 8) + LowByte;
  sign = TReading & 0x8000;  // test most sig bit
  if (sign) // negative
  {
    TReading = (TReading ^ 0xffff) + 1; // 2's comp
  }
  Tc_100 = (6 * TReading) + TReading / 4;    // multiply by (100 * 0.0625) or 6.25

  whole = Tc_100 / 100;  // separate off the whole and fractional portions
  fract = Tc_100 % 100;


	if(sign) temp[0]='-';
	else 		 temp[0]='+';
	
        if(whole/100==0)
           temp[1] =' ';
        else
	  temp[1]= whole/100+'0';
	temp[2]= (whole-(whole/100)*100)/10 +'0' ;
	temp[3]= whole-(whole/10)*10 +'0';
	
	temp[4]='.';
	temp[5]=fract/10 +'0';
	temp[6]=fract-(fract/10)*10 +'0';
	
	temp[7] = '\0';


	
}

why dont use DallasTemperatureControl library?

Dallas's librairy?

Btguillaume:
Dallas's librairy?

Yes, why don't use Dallas's library?

what's that I juste done a quick google's search, but nothing interrested....

can you explain what's that?

There's an Arduino library for "one wire" devices like the DS18B20.

http://playground.arduino.cc/Learning/OneWire

Btguillaume:
what's that I juste done a quick google's search, but nothing interrested....

can you explain what's that?

I mean this library:
http://milesburton.com/Dallas_Temperature_Control_Library

Hi everybody! I'm newbie and I want to make similar project. But I use Wiznet W5100 Ethernet Shield... So my question is how to change the code for the Arduino Ethernet Shield? ?an anybody help me?

Hi, this code is really nice! I modified it a little bit to be used with LM35DZ.
Now I need to implement the basic authentication (otherwise everybody can enter my home system and switch on my heater!!!) but I am completely lost!!! Could someone help me please?
thanks!

thermostat.ino (11 KB)

The client will make a request to your Arduino, typically with no authorization.

GET /foo HTTP/1.0
Host: foo.bar.com

Your arduino should respond with a request for authorization

403 Forbidden

The client will redo its request with credentials

GET /foo HTTP/1.0
Host: foo.bar.com
Authorization: Basic base_64_encoded_username_password

Your arduino can either decode the base64 encoded string or simply perform a match against a known base64 encoded string. An example of a an encoded Header, using the username "username" and password "password" separated by a colon in the standard format of "username:password" would look like:

Authorization: Basic dXNlcm5hbWU6cGFzc3dvcmQ=

In each instance there will be additional HTTP headers present, such as "User-Agent:" or "Accept:", but what I have above are the only important ones.

Putting that more simply, for any request that you receive you should verify that there is an Authorization: header and that the encoded string contains a proper username/password. Continue processing the request as usual if so. If not, reply with a 403 Forbidden response.

Hi, could you help me to integrate it in my code?
I am really a newbie...
Thanks!