Stoplight.ino

#include "SPI.h"
#include "WiFly.h"

#define RED 5
#define YELLOW 6
#define GREEN 7

#include "Credentials.h"

WiFlyClient client("example.com", 80);

String readString = "";
String responseString = "";

void setup() {
  pinMode(RED, OUTPUT);
  pinMode(YELLOW, OUTPUT);
  pinMode(GREEN, OUTPUT);

  digitalWrite(RED, LOW);
  digitalWrite(YELLOW, LOW);
  digitalWrite(GREEN, LOW);
  Serial.begin(9600);

  WiFly.begin();
  
  if (!WiFly.join(ssid, passphrase)) {
    Serial.println("Association failed.");
    while (1) {
      digitalWrite(RED, HIGH);
      digitalWrite(YELLOW, HIGH);
      digitalWrite(GREEN, HIGH);
    }
  }  

}

void loop() {
  Serial.println("connecting...");

  if (client.connect()) {
    Serial.println("connected");
    client.println("GET /status HTTP/1.1");
    client.println("HOST: example.com");
    client.println();
    digitalWrite(YELLOW, HIGH);
    digitalWrite(RED, LOW);
    digitalWrite(GREEN, LOW);
  } else {
    Serial.println("connection failed");
  }
  delay(1000);  
  

  while(1) {
    char c;
    if(client.available()) {
      c = client.read();
      readString += c;
      if(c == '\n') {
        Serial.print(readString);
        readString = "";
      }
    }
    if(c == ']') {
      Serial.println(readString);
      responseString = readString;
      readString = "";
      break;
    }
    
  }
  
  if(responseString == "[200]") {
    digitalWrite(YELLOW, LOW);
    digitalWrite(GREEN, HIGH);
  } else {
    digitalWrite(YELLOW, LOW);
    digitalWrite(RED, HIGH);    
  }
  responseString = "";
  
  // Examine response, check for good/bad status
  
  
  Serial.println("Disconnecting...");
  client.stop();
  delay(600000);  
}