sd_map.ino

// NeoPixel Ring simple sketch (c) 2013 Shae Erisson
// released under the GPLv3 license to match the rest of the AdaFruit NeoPixel library

#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
  #include <avr/power.h>
#endif

// Which pin on the Arduino is connected to the NeoPixels?
// On a Trinket or Gemma we suggest changing this to 1
#define PIN            6

// How many NeoPixels are attached to the Arduino?
#define NUMPIXELS      10



// When we setup the NeoPixel library, we tell it how many pixels, and which pin to use to send signals.
// Note that for older NeoPixel strips you might need to change the third parameter--see the strandtest
// example for more information on possible values.
Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);

int delayval = 500; // delay for half a second

String inputString = ""; // a string to hold incoming data
boolean stringComplete = false; // for serial message complete
String update = "";

void setup() {
  Serial.begin(9600);  
  pixels.begin(); // This initializes the NeoPixel library.
}

boolean firstRun = true;

void loop() {
  
  if (firstRun){
    pixels.setPixelColor(0, pixels.Color(0,150,0));
    pixels.setPixelColor(1, pixels.Color(0,150,0));
    pixels.setPixelColor(2, pixels.Color(0,150,0));
    pixels.setPixelColor(3, pixels.Color(0,150,0));
    pixels.setPixelColor(4, pixels.Color(0,150,0));
    pixels.setPixelColor(5, pixels.Color(0,150,0));
    pixels.setPixelColor(6, pixels.Color(0,150,0));
    pixels.setPixelColor(7, pixels.Color(0,150,0));
    pixels.setPixelColor(8, pixels.Color(0,150,0));
    pixels.setPixelColor(9, pixels.Color(0,150,0));
    pixels.show();
    firstRun = false;
  }

  if (stringComplete) {
    inputString.replace("\n","");
    update = inputString;
    
    int lengthOfUpdate = update.length();
    int space = update.indexOf(' ');
    String location = update.substring(0, space);
    String locationStatus = update.substring(space + 1, lengthOfUpdate);

    changeLEDState(location, locationStatus);
    // clear the string:
    inputString = "";
    stringComplete = false;
  }
  
  delay(delayval); // Delay for a period of time (in milliseconds).
}

void changeLEDState(String location, String locationStatus){
  int pixel = 0;
  if (location == "northcalifornia") {
    pixel = 0; 
  }
  else if (location == "vinadelmar") {
    pixel = 1;  
  }
  else if (location == "johannesburg") {
    pixel = 2;
  }
  else if (location == "milan") {
    pixel = 3;
  }
  else if (location == "frankfurt") {
    pixel = 4;
  }
  else if (location == "london") {
    pixel = 5;
  }
  else if (location == "stockholm") {
    pixel = 6;
  }
  else if (location == "moscow") {
    pixel = 7;
  }
  else if (location == "toyko") {
    pixel = 8;
  }
  else if (location == "sydney") {
    pixel = 9;
  }
  
  if (locationStatus == "down") {
    Serial.print("updating ");
    Serial.print(location); 
    Serial.println(" to down");
    pixels.setPixelColor(pixel, pixels.Color(150,0,0));
   } else if (locationStatus == "up") {
    Serial.print("updating ");
    Serial.print(location); 
    Serial.println(" to up");
    pixels.setPixelColor(pixel, pixels.Color(0,150,0));
   } else if (locationStatus == "slow") {
    Serial.print("updating ");
    Serial.print(location); 
    Serial.println(" to slow");
    pixels.setPixelColor(pixel, pixels.Color(255,140,0));
   }
  pixels.show();
}

void serialEvent() {
  while (Serial.available()) {
    // get the new byte:  
    char inChar = (char)Serial.read();
    // add it to the inputString:
    inputString += inChar;
    // if the incoming character is a newline, set a flag
    // so the main loop can do something about it:
    if (inChar == '\n') {
      stringComplete = true;
    }
  }
}