advanced code snippet search

Posted By

icotoi on 12/02/11


Tagged

webserver arduino


Versions (?)

WebServer

 / Published in: C++
 

Arduino webserver

Expand | Embed | Plain Text 
  1. void doWebServerLoop() {
  2.   // listen for incoming clients
  3.   Client client = server.available();
  4.   unsigned char have_http_get = 0;
  5.   unsigned char i= 0;
  6.   if (client) {
  7.     // an http request ends with a blank line 
  8.     boolean currentLineIsBlank = true;
  9.     while (client.connected()) {
  10.       if (client.available()) {
  11.         char c = client.read();
  12.         if (c == '?') {
  13.           have_http_get = 1;
  14.           char buf[10];
  15.           memset(buf, 0, sizeof(buf));
  16.           char cursor = 0;
  17.           // We have a GET request
  18.  
  19.           // Read R0 value (Relay0)
  20.           memset(buf, 0, sizeof(buf));
  21.           cursor = 0;
  22.           c = client.read();
  23.           while(c!='&') {
  24.             buf[cursor] = c;
  25.             cursor++;
  26.             if(c == 'R')
  27.               cursor=0;
  28.             if(c == '0')
  29.               cursor=0;
  30.             if(c == '=')
  31.               cursor=0;
  32.             c = client.read();
  33.           }
  34.           int bounce_rel = atoi(buf);
  35.           if(bounce_rel == 1)
  36.             bounceRelayState(0);
  37.           // Read R1 value (Relay1)
  38.           memset(buf, 0, sizeof(buf));
  39.           cursor = 0;
  40.           c = client.read();
  41.           while(c!='&') {
  42.             buf[cursor] = c;
  43.             cursor++;
  44.             if(c == 'R')
  45.               cursor=0;
  46.             if(c == '1')
  47.               cursor=0;
  48.             if(c == '=')
  49.               cursor=0;
  50.             c = client.read();
  51.           }
  52.           bounce_rel = atoi(buf);
  53.           if(bounce_rel == 1)
  54.             bounceRelayState(1);
  55.           // Read R2 value (Relay2)
  56.           memset(buf, 0, sizeof(buf));
  57.           cursor = 0;
  58.           c = client.read();
  59.           while(c!='&') {
  60.             buf[cursor] = c;
  61.             cursor++;
  62.             if(c == 'R')
  63.               cursor=0;
  64.             if(c == '2')
  65.               cursor=0;
  66.             if(c == '=')
  67.               cursor=0;
  68.             c = client.read();
  69.           }
  70.           bounce_rel = atoi(buf);
  71.           if(bounce_rel == 1)
  72.             bounceRelayState(2);
  73.           // Read R3 value (Relay3)
  74.           memset(buf, 0, sizeof(buf));
  75.           cursor = 0;
  76.           c = client.read();
  77.           while(c!='&') {
  78.             buf[cursor] = c;
  79.             cursor++;
  80.             if(c == 'R')
  81.               cursor=0;
  82.             if(c == '3')
  83.               cursor=0;
  84.             if(c == '=')
  85.               cursor=0;
  86.             c = client.read();
  87.           }
  88.           bounce_rel = atoi(buf);
  89.           if(bounce_rel == 1)
  90.             bounceRelayState(3);
  91.           // Save data to EEPROM
  92.           saveDataToEEPROM();
  93.  
  94.         }
  95.  
  96.         // if you've gotten to the end of the line (received a newline
  97.         // character) and the line is blank, the http request has ended,
  98.         // so you can send a reply
  99.         if (c == '\n' && currentLineIsBlank) {
  100.          if(have_http_get == 1) {
  101.             // send refresh to shorten URL
  102.             client.println("HTTP/1.1 200 OK");
  103.             client.println("Refresh: 0; url=/");
  104.             break;
  105.           } else {
  106.           // send a standard http response header
  107.           client.println("HTTP/1.1 200 OK");
  108.           client.println("Content-type: text/html
  109. ");
  110.           client.println("<HTML><HEAD>");
  111.           client.println("<TITLE>Relays2Web</TITLE>");
  112.           client.println("</HEAD><BODY>");
  113. 	  client.println("<div id='wrapper'>");
  114.           client.println("<FORM METHOD='GET' ACTION='index.ard'>");
  115.           // output the value of each analog input pin
  116.           client.println("<table cellspacing='0' cellpadding='0'>");
  117.           client.println(" <tr><th colspan='2'>Values</th></tr>");
  118.           for(i = 0; i<6; i++) {
  119.             client.print(" <tr><td>Analog input ");
  120.             client.print(i, DEC);
  121.             client.print(": </td><td class='td_center'>");
  122.             client.print(AnalogValues[i],DEC);
  123.             client.print(" Volts </td>");
  124.             client.print("</tr>");
  125.           }
  126.           client.println("</table>");
  127.           for (i=0; i<4; i++) {
  128.             client.print("<INPUT TYPE='hidden' NAME='R");
  129.             client.print(i, DEC);
  130.             client.print("' VALUE='");
  131.             client.print(0, DEC);
  132.             client.print("' ID='Rel");
  133.             client.print(i, DEC);
  134.             client.println("'>");
  135.           }
  136.           for (int i=0; i<4; i++) {
  137.             client.println("<script type = 'text/javascript'>");
  138.             client.print(" function switchRel");
  139.             client.print(i, DEC);
  140.             client.println(" () {");
  141.             client.print(" document.getElementById('Rel");
  142.             client.print(i, DEC);
  143.             client.println("').value= '1' ;");
  144.             client.println("document.forms[0].submit();");
  145.             client.println("}");
  146.             client.println("</script>");
  147.           }
  148.           client.println("<INPUT TYPE='hidden' NAME='Z' VALUE='0'>");
  149.           client.println("</INPUT>"); 
  150.           client.println("</FORM>");
  151.  
  152.           client.println("<table cellspacing='0' cellpadding='0'>"
  153.                          "<tr>"
  154.                          "<th colspan='3'>"
  155.                          "Relay status"
  156.                          "</th>"
  157.                          "</tr>");
  158.           for(i=0; i<4; i++) {
  159.             client.print("<tr><td>Relay ");
  160.             client.print(i, DEC);
  161.             client.print("</td><td> &nbsp;State:");
  162.             client.println(RelayVals[i], DEC);
  163.             client.println("</td><td width='100px' class='td_center'>");
  164.             client.print("<INPUT TYPE='BUTTON' VALUE='Change this' onClick='switchRel");
  165.             client.print(i, DEC);
  166.             client.print("()'></td></tr>");
  167.           }
  168.           client.print("</table>");
  169.           client.print("<div id='footer'>System uptime:");
  170.           unsigned long upTime = millis()/1000;
  171.           unsigned int upDays = upTime/86400;
  172.           unsigned int upHours = (upTime/3600) - (upDays * 24);
  173.           unsigned int upMinutes = (upTime/60) - (upHours * 60) - (upDays * 1440);
  174.           upTime = upTime - (upMinutes *60);
  175.           upTime = upTime - (upHours * 3600);
  176.           upTime = upTime - (upDays * 86400);
  177.  
  178.           if(upDays > 0) {
  179.             client.print(upDays, DEC);
  180.             client.print(" days & ");
  181.           }
  182.           if(upHours > 0) {
  183.             client.print(upHours, DEC);
  184.             client.print(" hours & ");
  185.           }
  186.           if(upMinutes > 0) {
  187.             client.print(upMinutes, DEC);
  188.             client.print(" minutes & ");
  189.           }
  190.           client.print(upTime, DEC); 
  191.           client.print(" seconds");
  192. 	  client.println("</div>"
  193.                          "</div>"
  194.                          "</body></html>");
  195.           break;
  196.           }
  197.         }
  198.         if (c == '\n') {
  199.           // you're starting a new line
  200.           currentLineIsBlank = true;
  201.         } 
  202.         else if (c != '\r') {
  203.           // you've gotten a character on the current line
  204.           currentLineIsBlank = false;
  205.         }
  206.       }
  207.     }
  208.     // give the web browser time to receive the data
  209.     delay(1);
  210.     // close the connection:
  211.     client.stop();
  212.   }
  213. }

Report this snippet  

You need to login to post a comment.