Can anyone be kind enough to help me modify and add my code for me??

Question

hi to all of you mates.. im new to arduino and im working on this project web switch which can control on and off of appliance via web but my problem is i cant get to add another button for another relay channel, please help meeee tnx mates!!! #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] = {0x54,0x55,0x58,0x10,0x00,0x25}; static uint8_t myip[4] = {192,168,1,25}; static char baseurl[]=" http://192.168.1.25/ "; static uint16_t mywwwport =80; // listen port for tcp/www (max range 1-254) #define BUFFER_SIZE 600 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, byte on_off); int8_t analyse_cmd(char *str); // LED cathode connects the Pin4, anode to 5V through 1K resistor #define RELAY_PIN 8 void setup(){ /* Setup Serial */ Serial.begin(9600); pinMode(RELAY_PIN, OUTPUT); digitalWrite(RELAY_PIN, 0); // switch on LED /*initialize ENC28J60/ML ENC28J60/ML */ es.ES_enc28j60Init(mymac); es.ES_enc28j60clkout(2); // change clkout from 6.25MHz to 12.5MHz delay(10); /* Magjack leds configuration, see ENC28J60/ML ENC28J60/ML 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,mywwwport); } void loop(){ uint16_t plen, dat_p; int8_t cmd; byte on_off = 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 Content-Type: text/html

200 OK

")); goto SENDTCP; } if (strncmp("/ ",(char *)&(buf[dat_p+4]),2)==0){ plen=print_webpage(buf, on_off); goto SENDTCP; } cmd=analyse_cmd((char *)&(buf[dat_p+5])); //Debug Serial.print(cmd, DEC); Serial.println(""); if (cmd==2 || cmd==5){ on_off=1; digitalWrite(RELAY_PIN, HIGH); // switch on LED Serial.println("Turning LED ON"); } else if (cmd==3 || cmd==4 ){ on_off=0; digitalWrite(RELAY_PIN, LOW); // switch off LED Serial.println("Turning LED OFF"); } plen=print_webpage(buf, on_off); //plen=print_webpage(buf, on_off); 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 0x2f){ // is a ASCII number, return it r=(*strbuf-0x30); } } return r; } uint16_t print_webpage(uint8_t *buf, byte on_off) { int i=0; uint16_t plen; plen=es.ES_fill_tcp_data_p(buf,0,PSTR("HTTP/1.0 200 OK Content-Type: text/html ")); plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("

project WebSwitch!

")); plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("

Lightbulb is

")); if (on_off){ plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("

")); } else { plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("
")); } if(on_off) plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("OFF")); else plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("ON")); plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("

") ); if(on_off){ plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("")); plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("")); #ifdef SECOND_SWITCH plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("

")); plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("")); plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("
")); #endif } else { plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("")); plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("")); #ifdef SECOND_SWITCH plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("

")); plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("")); plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("
")); #endif } plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("

")); return(plen); }

shabaz · Answer

I think you may need to help yourself a little, otherwise you'll be dependant on others each time you want the code tweaked.

To help you, notice that some of the code has #ifdef SECOND_SWITCH

Also, notice this portion of code:

if (cmd==2 || cmd==5){

on_off=1;

digitalWrite(RELAY_PIN, HIGH); // switch on LED

Serial.println("Turning LED ON");

}

else if (cmd==3 || cmd==4 ){

on_off=0;

digitalWrite(RELAY_PIN, LOW); // switch off LED

Serial.println("Turning LED OFF");

}

You'd have to expand that so that commands 2 and 3 control the first relay, and 4 and 5 control the second relay for example.

The relay is programmed using the digitalWrite(RELAY_PIN,...) command and RELAY_PIN is defined at the top:

#define RELAY_PIN 8

You'd create another definition too, e.g.

#define RELAY_PINB x

(Choose x to be a free pin on your microcontroller - probably by looking at the circuit, and the microcontroller or board documentation). Notice the code also contains pinMode(RELAY_PIN, OUTPUT); so you'd need to do something similar for your new definition too.

That's a lot of help. Good luck.