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The file that is currently on an Arduino Uno with a serial number of 74132343530351609150
/*
Red/green LED indicator with pushbutton control
Based on http://www.makeuseof.com/tag/arduino-traffic-light-controller/
USE_GITHUB_USERNAME=mark-wilson
*/
// Setup Ethernet Shield
#include <SPI.h>
#include <Ethernet.h>
boolean reading = false;
// Enter a MAC address and IP address for your controller below.
// The IP details will be dependent on your local network (commented out if DHCP in use):
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
// byte ip[] = { 192, 168, 0, 112 }; //Manual setup only
// byte gateway[] = { 192, 168, 0, 1 }; //Manual setup only
// byte subnet[] = { 255, 255, 255, 0 }; //Manual setup only
// Initialize the Ethernet server library
// with the IP address and port you want to use
// (port 80 is default for HTTP):
EthernetServer server(80);
// Pins for coloured LEDs
int red = 3;
int amber = 4;
int green = 5;
int light = 0;
int button = 2; // Pushbutton on pin 2
int buttonValue = 0; // Button defaults to 0 (LOW)
void setup(){
Serial.begin(9600);
// Set up pins with LEDs as output devices and switch for input
// Pins 10,11,12 & 13 are used by the Ethernet Shield
pinMode(red,OUTPUT);
pinMode(amber,OUTPUT);
pinMode(green,OUTPUT);
pinMode(button,INPUT);
// start the Ethernet connection and the server:
Ethernet.begin(mac);
//Ethernet.begin(mac, ip, gateway, subnet); //for manual setup
server.begin();
Serial.println(Ethernet.localIP());
}
void loop(){
// listen for incoming clients, and process qequest.
checkForClient();
// Read the value of the pushbutton switch
buttonValue = digitalRead(button);
if (buttonValue == HIGH){
changeLights();
delay(1000); // Wait 1 second before reading again
}
}
void changeLights(){
// Change the lights based on current value: 0 is not set; 1 is red; 2 is amber; 3 is green
switch (light) {
case 1:
turnLightAmber();
break;
case 2:
turnLightGreen();
break;
case 3:
turnLightRed();
default:
turnLightRed();
}
}
void turnLightGreen(){
// Turn off the red/amber and turn on the green
digitalWrite(red,LOW);
digitalWrite(amber,LOW);
digitalWrite(green,HIGH);
light = 3;
}
void turnLightAmber(){
// Turn off the green/amber and turn on the red
digitalWrite(green,LOW);
digitalWrite(amber,HIGH);
digitalWrite(red,LOW);
light = 2;
}
void turnLightRed(){
// Turn off the green/amber and turn on the red
digitalWrite(green,LOW);
digitalWrite(amber,LOW);
digitalWrite(red,HIGH);
light = 1;
}
void checkForClient(){
EthernetClient client = server.available();
if (client) {
// An http request ends with a blank line
boolean currentLineIsBlank = true;
boolean sentHeader = false;
while (client.connected()) {
if (client.available()) {
if(!sentHeader){
// Send a standard http response header
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println();
sentHeader = true;
}
char c = client.read();
if(reading && c == ' ') reading = false;
if(c == '?') reading = true; //found the ?, begin reading the info
if(reading){
Serial.print(c);
switch (c) {
case 'a':
turnLightAmber();
break;
case 'g':
turnLightGreen();
break;
case 'r':
turnLightRed();
break;
}
}
if (c == '\n' && currentLineIsBlank) break;
if (c == '\n') {
currentLineIsBlank = true;
}else if (c != '\r') {
currentLineIsBlank = false;
}
}
}
delay(1); // give the web browser time to receive the data
client.stop(); // close the connection:
}
}
/*
Red/green LED indicator with pushbutton control
Based on http://www.makeuseof.com/tag/arduino-traffic-light-controller/
USE_GITHUB_USERNAME=mark-wilson
*/
// Pins for coloured LEDs
int red = 10;
int amber = 11;
int green = 12;
int light = 0;
int button = 2; // Pushbutton on pin 2
int buttonValue = 0; // Button defaults to 0 (LOW)
void setup(){
// Set up pins with LEDs as output devices and switch for input
pinMode(red,OUTPUT);
pinMode(amber,OUTPUT);
pinMode(green,OUTPUT);
pinMode(button,INPUT);
}
void loop(){
// Read the value of the pushbutton switch
buttonValue = digitalRead(button);
if (buttonValue == HIGH){
changeLights();
delay(1000); // Wait 1 second before reading again
}
}
void changeLights(){
// Change the lights based on current value: 0 is not set; 1 is red; 2 is amber; 3 is green
switch (light) {
case 1:
turnLightAmber();
break;
case 2:
turnLightGreen();
break;
case 3:
turnLightRed();
default:
turnLightRed();
}
}
void turnLightGreen(){
// Turn off the red/amber and turn on the green
digitalWrite(red,LOW);
digitalWrite(amber,LOW);
digitalWrite(green,HIGH);
light = 3;
}
void turnLightAmber(){
// Turn off the green/amber and turn on the red
digitalWrite(green,LOW);
digitalWrite(amber,HIGH);
digitalWrite(red,LOW);
light = 2;
}
void turnLightRed(){
// Turn off the green/amber and turn on the red
digitalWrite(green,LOW);
digitalWrite(amber,LOW);
digitalWrite(red,HIGH);
light = 1;
}
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