I’m having real trouble creating and integrating this project.
I’ve started with this code which is a ethernet web based switch for a relay on pin 4 (int led=4)
/*
Created by Rui Santos
Visit: http://randomnerdtutorials.com for more arduino projects
Arduino with Ethernet Shield
*/
#include <SPI.h>
#include <Ethernet.h>
int led = 4;
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED }; //physical mac address
byte ip[] = { 192, 168, 1, 178 }; // ip in lan (that's what you need to use in your browser. ("192.168.1.178")
byte gateway[] = { 192, 168, 1, 1 }; // internet access via router
byte subnet[] = { 255, 255, 255, 0 }; //subnet mask
EthernetServer server(80); //server port
String readString;
void setup() {
// Open serial communications and wait for port to open:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo only
}
pinMode(led, OUTPUT);
// start the Ethernet connection and the server:
Ethernet.begin(mac, ip, gateway, subnet);
server.begin();
Serial.print("server is at ");
Serial.println(Ethernet.localIP());
}
void loop() {
// Create a client connection
EthernetClient client = server.available();
if (client) {
while (client.connected()) {
if (client.available()) {
char c = client.read();
//read char by char HTTP request
if (readString.length() < 100) {
//store characters to string
readString += c;
//Serial.print(c);
}
//if HTTP request has ended
if (c == '\n') {
Serial.println(readString); //print to serial monitor for debuging
client.println("HTTP/1.1 200 OK"); //send new page
client.println("Content-Type: text/html");
client.println();
client.println("<HTML>");
client.println("<HEAD>");
client.println("<meta name='apple-mobile-web-app-capable' content='yes' />");
client.println("<meta name='apple-mobile-web-app-status-bar-style' content='black-translucent' />");
client.println("<link rel='stylesheet' type='text/css' href='http://randomnerdtutorials.com/ethernetcss.css' />");
client.println("<TITLE>Random Nerd Tutorials Project</TITLE>");
client.println("</HEAD>");
client.println("<BODY>");
client.println("<H1>Instructions in sketch near bottom</H1>");
client.println("<hr />");
client.println("
");
client.println("<H2>Arduino with Ethernet Shield</H2>");
client.println("
");
client.println("<a href=\"/?button1on\"\">Turn On</a>");
client.println("<a href=\"/?button1off\"\">Turn Off</a>
");
client.println("<p>Created by Rui Santos. Visit http://randomnerdtutorials.com for more projects!</p>");
client.println("
");
client.println("</BODY>");
client.println("</HTML>");
delay(1);
//stopping client
client.stop();
//controls the Arduino if you press the buttons
//I want this button1on button to turn on led T=0 (or C=10), then turn off after T=10 seconds (or C=0)
//(I will change to 1 hour later) and
//if pressed again, will 'reset' but max time is T=10. Example if press at t=0 and t=1 then turn of at t=11 NOT T=20
if (readString.indexOf("?button1on") >0){
digitalWrite(led, HIGH);
}
//I want this button1off button to turn off led in all conditions.
if (readString.indexOf("?button1off") >0){
digitalWrite(led, LOW);
}
//clearing string for next read
readString="";
}
}
}
}
}
It works great.