php - Moving a web server hosted on an Arduino to a local server -
i have code reads switch state , displays on webpage. webpage stored on sd card of ethernet shield.
but moved area. want use same principle, instead of web page stored on sd card want on xampp server of local computer. changes need do? please suggest.
arduino code:
#include <spi.h> #include <ethernet.h> #include <sd.h> // size of buffer used capture http requests #define req_buf_sz 50 // mac address ethernet shield sticker under board byte mac[] = { 0xde, 0xad, 0xbe, 0xef, 0xfe, 0xed }; ipaddress ip(192, 168, 0, 20); // ip address, may need change depending on network ethernetserver server(80); // create server @ port 80 file webfile; // web page file on sd card char http_req[req_buf_sz] = { 0}; // buffered http request stored null terminated string char req_index = 0; // index http_req buffer void setup() { // disable ethernet chip pinmode(10, output); digitalwrite(10, high); serial.begin(9600); // debugging // initialize sd card serial.println("initializing sd card..."); if (!sd.begin(4)) { serial.println("error - sd card initialization failed!"); return; // init failed } serial.println("success - sd card initialized."); // check index.htm file if (!sd.exists("index.htm")) { serial.println("error - can't find index.htm file!"); return; // can't find index file } serial.println("success - found index.htm file."); pinmode(7, input); // switch attached arduino pin 7 pinmode(8, input); // switch attached arduino pin 8 ethernet.begin(mac, ip); // initialize ethernet device server.begin(); // start listen clients } void loop() { ethernetclient client = server.available(); // try client if (client) { // got client? boolean currentlineisblank = true; while (client.connected()) { if (client.available()) { // client data available read char c = client.read(); // read 1 byte (character) client // buffer first part of http request in http_req array (string) // leave last element in array 0 null terminate string (req_buf_sz - 1) if (req_index < (req_buf_sz - 1)) { http_req[req_index] = c; // save http request character req_index++; } // last line of client request blank , ends \n // respond client after last line received if (c == '\n' && currentlineisblank) { // send standard http response header client.println("http/1.1 200 ok"); // remainder of header follows below, depending on if // web page or xml page requested // ajax request - send xml file if (strcontains(http_req, "ajax_inputs")) { // send rest of http header client.println("content-type: text/xml"); client.println("connection: keep-alive"); client.println(); // send xml file containing input states xml_response(client); } else { // web page request // send rest of http header client.println("content-type: text/html"); client.println("connection: keep-alive"); client.println(); // send web page webfile = sd.open("index.htm"); // open web page file if (webfile) { while(webfile.available()) { client.write(webfile.read()); // send web page client } webfile.close(); } } // display received http request on serial port serial.print(http_req); // reset buffer index , buffer elements 0 req_index = 0; strclear(http_req, req_buf_sz); break; } // every line of text received client ends \r\n if (c == '\n') { // last character on line of received text // starting new line next character read currentlineisblank = true; } else if (c != '\r') { // text character received client currentlineisblank = false; } } // end if (client.available()) } // end while (client.connected()) delay(1); // give web browser time receive data client.stop(); // close connection } // end if (client) } // send xml file switch statuses , analog value void xml_response(ethernetclient cl) { int analog_val; cl.print("<?xml version = \"1.0\" ?>"); cl.print("<inputs>"); cl.print("<button1>"); if (digitalread(7)) { cl.print("on"); } else { cl.print("off"); } cl.print("</button1>"); cl.print("<button2>"); if (digitalread(8)) { cl.print("on"); } else { cl.print("off"); } cl.print("</button2>"); // read analog pin a2 analog_val = analogread(2); cl.print("<analog1>"); cl.print(analog_val); cl.print("</analog1>"); cl.print("</inputs>"); } // sets every element of str 0 (clears array) void strclear(char *str, char length) { (int = 0; < length; i++) { str[i] = 0; } } // searches string sfind in string str // returns 1 if string found // returns 0 if string not found char strcontains(char *str, char *sfind) { char found = 0; char index = 0; char len; len = strlen(str); if (strlen(sfind) > len) { return 0; } while (index < len) { if (str[index] == sfind[found]) { found++; if (strlen(sfind) == found) { return 1; } } else { found = 0; } index++; } return 0; } sd card webpage:
<!doctype html> <html> <head> <title>arduino sd card web page using ajax xml</title> <script> function getarduinoinputs() { nocache = "&nocache=" + math.random() * 1000000; var request = new xmlhttprequest(); request.onreadystatechange = function() { if (this.readystate == 4) { if (this.status == 200) { if (this.responsexml != null) { // extract xml data xml file (containing switch states , analog value) document.getelementbyid("input1").innerhtml = this.responsexml.getelementsbytagname('button1')[0].childnodes[0].nodevalue; document.getelementbyid("input2").innerhtml = this.responsexml.getelementsbytagname('button2')[0].childnodes[0].nodevalue; document.getelementbyid("input3").innerhtml = this.responsexml.getelementsbytagname('analog1')[0].childnodes[0].nodevalue; } } } } request.open("get", "ajax_inputs" + nocache, true); request.send(null); settimeout('getarduinoinputs()', 1000); } </script> </head> <body onload="getarduinoinputs()"> <h1>arduino inputs sd card web page using ajax xml</h1> <p>button 1 (pin 7): <span id="input1">...</span></p> <p>button 2 (pin 8): <span id="input2">...</span></p> <p>analog (a2): <span id="input3">...</span></p> </body> </html>
your program big, understanding logic tough. question need clear. can guide in right direction.
you can make use of this.
here should :
you first need host website on local host, use php serve backend. create php code , link website, in such way when request php page arduino should in turn load webpage. basic structure :
<?php // connection information $servername = "localhost"; $username = "root"; $password = ""; $dbname = "arduinotest"; // create connection $conn = new mysqli($servername, $username, $password, $dbname); // sql query $sql = "insert testdata (mytime) values ('".$_get["value"]."')"; // execute query $conn->query($sql); // close connection $conn->close(); ?>then modify arduino code in such way can request php page on local machine. basic structure of :
#include <spi.h> #include <ethernet.h> byte mac[] = { 0xde, 0xad, 0xbe, 0xef, 0xfe, 0xed }; ipaddress ip(192,168,0,10); ipaddress server(192,168,0,4); ethernetclient client; int data = 10; void setup() { serial.begin(9600); ethernet.begin(mac, ip); } void loop() { if (client.connect(server, 80)) { serial.println("connected successfully\n"); // print debugging serial.print("get /dbtest.php?"); serial.print("value="); serial.print(data); serial.println(" http/1.1"); serial.print("host: "); serial.println(server); serial.println("connection: close"); client.print("get /dbtest.php?"); client.print("value="); client.print(data); client.println(" http/1.1"); client.print("host: "); client.println(server); client.println("connection: close"); client.println(); client.println(); client.stop(); } else { serial.println("connection failed\n"); } delay(30000); }
this video link helpful.
Comments
Post a Comment