// Perform all processing to get an IP address plus other addresses returned, e.g. gw, dns, dhcp server.
// Returns 1 for successful IP address allocation, 0 otherwise
uint8_t EtherShield::allocateIPAddress(uint8_t *buf, uint16_t buffer_size, uint8_t *mymac, uint16_t myport, uint8_t *myip, uint8_t *mynetmask, uint8_t *gwip, uint8_t *dnsip, uint8_t *dhcpsvrip ) {
uint16_t dat_p;
int plen = 0;
long lastDhcpRequest = millis();
uint8_t dhcpState = 0;
boolean gotIp = false;
uint8_t dhcpTries = 10; // After 10 attempts fail gracefully so other action can be carried out
dhcp_start( buf, mymac, myip, mynetmask,gwip, dnsip, dhcpsvrip );
while( !gotIp ) {
// handle ping and wait for a tcp packet
plen = enc28j60PacketReceive(buffer_size, buf);
dat_p=packetloop_icmp_tcp(buf,plen);
if(dat_p==0) {
int retstat = check_for_dhcp_answer( buf, plen);
dhcpState = dhcp_state();
// we are idle here
if( dhcpState != DHCP_STATE_OK ) {
if (millis() > (lastDhcpRequest + 10000L) ){
lastDhcpRequest = millis();
if( --dhcpTries <= 0 )
return 0; // Failed to allocate address
// send dhcp
dhcp_start( buf, mymac, myip, mynetmask,gwip, dnsip, dhcpsvrip );
}
} else {
if( !gotIp ) {
gotIp = true;
//init the ethernet/ip layer:
init_ip_arp_udp_tcp(mymac, myip, myport);
// Set the Router IP
client_set_gwip(gwip); // e.g internal IP of dsl router
// Set the DNS server IP address if required, or use default
dnslkup_set_dnsip( dnsip );
}
}
}
}
return 1;
}
void EtherShield::ES_client_set_gwip(uint8_t *gwipaddr) {
client_set_gwip(gwipaddr);
}
int main(void){
uint16_t dat_p,plen;
int8_t cmd;
// Set the clock speed to "no pre-scaler" (8MHz with internal osc or
// full external speed)
// set the clock prescaler. First write CLKPCE to enable setting
// of clock the next four instructions.
// Note that the CKDIV8 Fuse determines the initial
// value of the CKKPS bits.
CLKPR=(1<<CLKPCE); // change enable
CLKPR=0; // "no pre-scaler"
_delay_loop_1(0); // 60us
/*initialize enc28j60*/
enc28j60Init(mymac);
enc28j60clkout(2); // change clkout from 6.25MHz to 12.5MHz
_delay_loop_1(0); // 60us
/* Magjack leds configuration, see enc28j60 datasheet, page 11 */
// LEDB=yellow LEDA=green
//
// 0x476 is PHLCON LEDA=links status, LEDB=receive/transmit
// enc28j60PhyWrite(PHLCON,0b0000 0100 0111 01 10);
enc28j60PhyWrite(PHLCON,0x476);
DDRB|= (1<<DDB1); // LED, enable PB1, LED as output
LEDOFF;
DDRD&= ~(1<<DDD6); // enable PB6, as input
PORTD|= (1<<PIND6); // internal pullup resistor on
init_cnt2();
sei();
//init the web server ethernet/ip layer:
init_ip_arp_udp_tcp(mymac,myip,MYWWWPORT);
// init the web client:
client_set_gwip(gwip); // e.g internal IP of dsl router
//
while(1){
// handle ping and wait for a tcp packet
plen=enc28j60PacketReceive(BUFFER_SIZE, buf);
dat_p=packetloop_icmp_tcp(buf,plen);
if(plen==0){
// we are idle here
if (client_waiting_gw() ){
continue;
}
if (dns_state==0){
sec=0;
dns_state=1;
dnslkup_request(buf,PSTR(WEBSERVER_VHOST));
continue;
}
if (dns_state==1 && dnslkup_haveanswer()){
dns_state=2;
client_set_wwwip(dnslkup_getip());
}
if (dns_state!=2){
// retry every minute if dns-lookup failed:
if (sec > 60){
dns_state=0;
}
// don't try to use web client before
// we have a result of dns-lookup
continue;
}
//----------
if (start_web_client==1){
LEDON;
start_web_client=2;
sec=0;
web_client_attempts++;
// the identi.ca line is status=Url_encoded_string
strcat(statusstr,"status=");
// the text to send to identi.ca (append after status=):
//urlencode("Meals are ready",&(statusstr[7]));
urlencode("I like tuxgraphics eth boards, ",&(statusstr[7]));
// append a number:
itoa(web_client_attempts,&(statusstr[strlen(statusstr)]),10);
// The BLOGGACCOUNT Authorization code can be generated from
// username and password of your identi.ca account
// by using this encoder: http://tuxgraphics.org/~guido/javascript/base64-javascript.html
client_http_post(PSTR("/api/statuses/update.xml"),PSTR(WEBSERVER_VHOST),PSTR(BLOGGACCOUNT),statusstr,&browserresult_callback);
}
// count how often the switch was triggered at all:
if (contact_debounce==0 && bit_is_clear(PIND,PIND6)){
contact_onoff_cnt++;
contact_debounce=1;
}
// we send only a request if we are in the right state (do
// not flood with request):
if (start_web_client==0 && bit_is_clear(PIND,PIND6)){
resend=1; // resend once if it failed
start_web_client=1;
}
// Reset after a delay of 3 min to prevent email sending.
// We reset only if the contact on PD6 was released.
if (start_web_client<=3 && sec==180 && !bit_is_clear(PIND,PIND6)){
start_web_client=0;
}
// Resend the message if it failed:
if (start_web_client==2 && sec==7 && resend){
start_web_client=1;
resend--;
}
continue;
}
if(dat_p==0){ // plen!=0
// check for incomming messages not processed
// as part of packetloop_icmp_tcp, e.g udp messages
udp_client_check_for_dns_answer(buf,plen);
continue;
}
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
dat_p=http200ok();
dat_p=fill_tcp_data_p(buf,dat_p,PSTR("<h1>200 OK</h1>"));
goto SENDTCP;
}
cmd=analyse_get_url((char *)&(buf[dat_p+4]));
// for possible status codes see:
// http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html
if (cmd==-1){
dat_p=fill_tcp_data_p(buf,0,PSTR("HTTP/1.0 401 Unauthorized\r\nContent-Type: text/html\r\n\r\n<h1>401 Unauthorized</h1>"));
goto SENDTCP;
}
if (cmd==1 && start_web_client==4){
// email was off, switch on
start_web_client=0;
}
if (cmd==0 ){
start_web_client=4; // email off
}
dat_p=http200ok();
dat_p=print_webpage(buf);
//
SENDTCP:
www_server_reply(buf,dat_p); // send data
}
return (0);
}
int main(void){
uint16_t dat_p;
int8_t cmd;
// Set the clock speed to "no pre-scaler" (8MHz with internal osc or
// full external speed)
// set the clock prescaler. First write CLKPCE to enable setting
// of clock the next four instructions.
// Note that the CKDIV8 Fuse determines the initial
// value of the CKKPS bits.
CLKPR=(1<<CLKPCE); // change enable
CLKPR=0; // "no pre-scaler"
_delay_loop_1(0); // 60us
/*initialize enc28j60*/
enc28j60Init(mymac);
enc28j60clkout(2); // change clkout from 6.25MHz to 12.5MHz
_delay_loop_1(0); // 60us
/* Magjack leds configuration, see enc28j60 datasheet, page 11 */
// LEDB=yellow LEDA=green
//
// 0x476 is PHLCON LEDA=links status, LEDB=receive/transmit
// enc28j60PhyWrite(PHLCON,0b0000 0100 0111 01 10);
enc28j60PhyWrite(PHLCON,0x476);
DDRB|= (1<<DDB1); // LED, enable PB1, LED as output
LEDOFF;
DDRD&= ~(1<<DDD6); // enable PB6, as input
PORTD|= (1<<PIND6); // internal pullup resistor on
init_cnt2();
sei();
//init the web server ethernet/ip layer:
init_ip_arp_udp_tcp(mymac,myip,MYWWWPORT);
// init the web client:
client_set_gwip(gwip); // e.g internal IP of dsl router
client_set_wwwip(websrvip);
//
while(1){
// handle ping and wait for a tcp packet
dat_p=packetloop_icmp_tcp(buf,enc28j60PacketReceive(BUFFER_SIZE, buf));
if(dat_p==0){
if (start_web_client==1){
LEDON;
start_web_client=2;
sec=0;
web_client_attempts++;
// the text to send in the body of the mail:
urlencode("The door is open",urlvarstr);
// The string "test+emailnotify" is the subject line
// of the email. A plus sign translates into a space character.
// The MMaccountID is gus123, edit and replace by your own.
client_browse_url(PSTR("/cgi-bin/mm?a=gus123&s=test+emailnotify&d="),urlvarstr,PSTR(WEBSERVER_VHOST),&browserresult_callback);
}
// count how often the switch was triggered at all:
if (contact_debounce==0 && bit_is_clear(PIND,PIND6)){
contact_onoff_cnt++;
contact_debounce=1;
}
// we send only an email if we are in the right state (do
// not flood with email):
if (start_web_client==0 && bit_is_clear(PIND,PIND6)){
resend=1; // resend once if it failed
start_web_client=1;
}
// Reset after a delay of 3 min to prevent email sending.
// We reset only if the contact on PD6 was released.
if (start_web_client<=3 && sec==180 && !bit_is_clear(PIND,PIND6)){
start_web_client=0;
}
// Resend the email if it failed:
if (start_web_client==2 && sec==7 && resend){
start_web_client=1;
resend--;
}
continue;
}
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
dat_p=http200ok();
dat_p=fill_tcp_data_p(buf,dat_p,PSTR("<h1>200 OK</h1>"));
goto SENDTCP;
}
cmd=analyse_get_url((char *)&(buf[dat_p+4]));
// for possible status codes see:
// http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html
if (cmd==-1){
dat_p=fill_tcp_data_p(buf,0,PSTR("HTTP/1.0 401 Unauthorized\r\nContent-Type: text/html\r\n\r\n<h1>401 Unauthorized</h1>"));
goto SENDTCP;
}
if (cmd==1 && start_web_client==4){
// email was off, switch on
start_web_client=0;
}
if (cmd==0 ){
start_web_client=4; // email off
}
dat_p=http200ok();
dat_p=print_webpage(buf);
//
SENDTCP:
www_server_reply(buf,dat_p); // send data
}
return (0);
}
static void _eth_spi_handle_frame() {
u16_t rx_stat;
int plen = enc28j60PacketReceive(ETHSPI_MAX_PKT_SIZE, ethspi.rxbuf, &rx_stat);
if (plen == 0) {
DBG(D_ETH, D_DEBUG, "ethspi no frame, rx_stat:%04x\n", rx_stat);
return;
}
#ifdef ETH_STATS
ethspi.rx_frames++;
ethspi.rx_data += plen;
#endif
DBG(D_ETH, D_DEBUG, "ethspi got frame, len %i, rx_stat:%04x\n", plen, rx_stat);
//printbuf(ethspi.rxbuf, MIN(64, plen));
// doing dhcp, do not allow anything else right now
if (ethspi.dhcp.query && ethspi.dhcp.active) {
int dhcp_res;
dhcp_res = check_for_dhcp_answer(ethspi.rxbuf, plen);
DBG(D_ETH, D_DEBUG, "ethspi DHCP:%i state:%i\n", dhcp_res, dhcp_state());
if (dhcp_state() == DHCP_STATE_OK) {
ethspi.dhcp.query = FALSE;
DBG(D_ETH, D_DEBUG, "ethspi DHCP OK\n");
DBG(D_ETH, D_INFO, "ethspi DHCP ip %i.%i.%i.%i\n", ethspi.dhcp.ipaddr[0], ethspi.dhcp.ipaddr[1], ethspi.dhcp.ipaddr[2], ethspi.dhcp.ipaddr[3]);
DBG(D_ETH, D_DEBUG, "ethspi DHCP gwip %i.%i.%i.%i\n", ethspi.dhcp.gwip[0], ethspi.dhcp.gwip[1], ethspi.dhcp.gwip[2], ethspi.dhcp.gwip[3]);
DBG(D_ETH, D_DEBUG, "ethspi DHCP mask %i.%i.%i.%i\n", ethspi.dhcp.mask[0], ethspi.dhcp.mask[1], ethspi.dhcp.mask[2], ethspi.dhcp.mask[3]);
DBG(D_ETH, D_DEBUG, "ethspi DHCP dhcp %i.%i.%i.%i\n", ethspi.dhcp.dhcp_server[0], ethspi.dhcp.dhcp_server[1], ethspi.dhcp.dhcp_server[2], ethspi.dhcp.dhcp_server[3]);
DBG(D_ETH, D_DEBUG, "ethspi DHCP dns %i.%i.%i.%i\n", ethspi.dhcp.dns_server[0], ethspi.dhcp.dns_server[1], ethspi.dhcp.dns_server[2], ethspi.dhcp.dns_server[3]);
memcpy(ip_address, ethspi.dhcp.ipaddr, 4);
set_ip(ethspi.dhcp.ipaddr);
client_set_gwip(ethspi.dhcp.gwip);
#ifdef CONFIG_ETH_DHCP_SHOW
print("eth ip address %i.%i.%i.%i\n", ethspi.dhcp.ipaddr[0], ethspi.dhcp.ipaddr[1], ethspi.dhcp.ipaddr[2], ethspi.dhcp.ipaddr[3]);
#endif
}
return;
}
// arp is broadcast if unknown but a host may also
// verify the mac address by sending it to
// a unicast address.
if (eth_type_is_arp_and_my_ip(ethspi.rxbuf, plen)) {
make_arp_answer_from_request(ethspi.rxbuf);
return;
}
// check if ip frames (icmp or udp) are for us or broadcast:
if (eth_type_is_ip_and_broadcast(ethspi.rxbuf, plen) == 0) {
if (eth_type_is_ip_and_my_ip(ethspi.rxbuf, plen) == 0) {
return;
}
if (ethspi.rxbuf[IP_PROTO_P]==IP_PROTO_ICMP_V &&
ethspi.rxbuf[ICMP_TYPE_P]==ICMP_TYPE_ECHOREQUEST_V){
// a ping frame, let's send pong
make_echo_reply_from_request(ethspi.rxbuf, plen);
return;
}
}
#if 0
// we listen on port 0xcafe
if (ethspi.rxbuf[IP_PROTO_P] == IP_PROTO_UDP_V
&& ethspi.rxbuf[UDP_DST_PORT_H_P] == 0xca && ethspi.rxbuf[UDP_DST_PORT_L_P] == 0xf) {
int payloadlen = ethspi.rxbuf[UDP_LEN_L_P];//plen - 34 - UDP_HEADER_LEN;
DBG(D_ETH, D_DEBUG, "ethspi UDP len:%i\n", payloadlen);
//char *nisse = "hello wurlde";
//make_udp_reply_from_request(ethbuf, nisse, strlen(nisse), 1200);
DBG(D_ETH, D_DEBUG, "ethspi eth mac dst: %02x.%02x.%02x.%02x.%02x.%02x\n",
ethspi.rxbuf[0], ethspi.rxbuf[1], ethspi.rxbuf[2], ethspi.rxbuf[3], ethspi.rxbuf[4], ethspi.rxbuf[5]); // ETH_DST_MAC
DBG(D_ETH, D_DEBUG, "ethspi eth mac src: %02x.%02x.%02x.%02x.%02x.%02x\n",
ethspi.rxbuf[6], ethspi.rxbuf[7], ethspi.rxbuf[8], ethspi.rxbuf[9], ethspi.rxbuf[10], ethspi.rxbuf[11]); // ETH_SRC_MAC
DBG(D_ETH, D_DEBUG, "ethspi eth type: %02x %02x\n",
ethspi.rxbuf[12], ethspi.rxbuf[13]); // ETH_TYPE_H_P, ETH_TYPE_L_P
DBG(D_ETH, D_DEBUG, "ethspi ip src: %i.%i.%i.%i\n",
ethspi.rxbuf[26], ethspi.rxbuf[27], ethspi.rxbuf[28], ethspi.rxbuf[29]); // IP_SRC_P
DBG(D_ETH, D_DEBUG, "ethspi ip dst: %i.%i.%i.%i\n",
ethspi.rxbuf[30], ethspi.rxbuf[31], ethspi.rxbuf[32], ethspi.rxbuf[33]); // IP_DST_P
DBG(D_ETH, D_DEBUG, "ethspi udp src port: %i\n",
(ethspi.rxbuf[34] << 8) | ethspi.rxbuf[35]); // UDP_SRC_PORT_H_P
DBG(D_ETH, D_DEBUG, "ethspi udp dst port: %i\n",
(ethspi.rxbuf[36] << 8) | ethspi.rxbuf[37]); // UDP_DST_PORT_H_P
DBG(D_ETH, D_DEBUG, "ethspi udp len: %04x\n",
(ethspi.rxbuf[38] << 8) | ethspi.rxbuf[39]); // UDP_LEN_H_P
DBG(D_ETH, D_DEBUG, "ethspi udp checksum: %04x\n",
(ethspi.rxbuf[40] << 8) | ethspi.rxbuf[41]); // UDP_CHECKSUM_H_P
}
IF_DBG(D_ETH, D_DEBUG) {
printbuf(ðspi.rxbuf[0], plen);
}
