election_leds

//// ARDUINO SKETCH ////

// Based on the NeoPixel "strandtest" example: https://github.com/adafruit/Adafruit_NeoPixel

#include <Adafruit_NeoPixel.h>
#define PIN 6

// Parameter 1 = number of pixels in strip
// Parameter 2 = pin number (most are valid)
// Parameter 3 = pixel type flags, add together as needed:
//   NEO_KHZ800  800 KHz bitstream (most NeoPixel products w/WS2812 LEDs)
//   NEO_KHZ400  400 KHz (classic 'v1' (not v2) FLORA pixels, WS2811 drivers)
//   NEO_GRB     Pixels are wired for GRB bitstream (most NeoPixel products)
//   NEO_RGB     Pixels are wired for RGB bitstream (v1 FLORA pixels, not v2)
Adafruit_NeoPixel strip = Adafruit_NeoPixel(60, PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  //LED Strip
  strip.begin();
  strip.show(); // Initialize all pixels to 'off'
  
  // Serial Port
  Serial.begin(9600);
  
}

void loop() {
  
  // if there's any serial data available, read it:
  while (Serial.available() > 0) {
  
    // get the numbers of LEDs to light up from the 
    // PROCESSING sketch
      int deblasio_light_up = Serial.parseInt();
      int lhota_light_up = Serial.parseInt();

    // so we can watch things in the Serial window
    Serial.print(deblasio_light_up);
    Serial.print(lhota_light_up);
      
      Serial.print(22222);
      
      // clear the strip 
      colorNow(strip.Color(0, 0, 0), 0); // black, no wait
      
      // color the deblasio row blue from 0 to 59.
      for(uint16_t i=0; i<deblasio_light_up; i++) {
        strip.setPixelColor(i, strip.Color(0,0,255));
        strip.show(); // light the next LED
        delay(30); // give it a little drama
      } // close for
      
      // color the lhota row blue from 59 to 0.
      for(uint16_t i=0; i<lhota_light_up; i++) {
        strip.setPixelColor(60-i, strip.Color(255,0,0));
        strip.show(); // light the next LED
        delay(30); // give it a little drama
      } // close for
      
      // color the center LED yellow
      strip.setPixelColor(30, strip.Color(120,120,0));
      strip.show(); // light the next LED
     
  
  } // close while
  
} // close loop


// Make a color instantly
void colorNow(uint32_t colr, uint16_t wait) {
  for(uint16_t i=0; i<strip.numPixels(); i++) {
    strip.setPixelColor(i, colr);
  }
  strip.show();
  delay(wait);
  
} 

//// PROCESSING SKETCH ////

// based on example from http://processing.org/reference/loadJSONObject_.html

// import serial library
import processing.serial.*;
Serial port; 

JSONObject json;
JSONObject bodies;
JSONObject mayors;
JSONObject contests;
JSONObject nyc;
JSONObject candidates;
JSONObject deblasio;
JSONObject lhota;

int lastMillis = 0;

void setup() {

// --- ran the following as a separate sketch
// --- be sure to notice that the list is space-separated!
// --- don't rely on line feeds
// // List all the available serial ports in the output pane. 
// // You will need to choose the port that the Arduino board is 
// // connected to from this list. The first port in the list is 
// // port #0 and the third port in the list is port #2. 
// println(Serial.list()); 
 
 
 // Open the port that the Arduino board is connected to (in my case #11) 
 // Make sure to open the port at the same speed Arduino is using (9600bps) 
 port = new Serial(this, Serial.list()[11], 9600); 
  
}

  
void draw() {

  // check to see if 60 seconds have passed
  if(millis()>lastMillis+60000)//been at least 60000 mills aka 60 secs
  {
    lastMillis=millis(); //update the last time we did anything
    
      //  json = loadJSONObject("NY-test.json");
          json = loadJSONObject("http://project.wnyc.org/election2013/data/NY.json");
        
          bodies = json.getJSONObject("bodies");
          mayors = bodies.getJSONObject("Mayor");
          contests = mayors.getJSONObject("contests");
          nyc = contests.getJSONObject("New York City");
          candidates = nyc.getJSONObject("candidates");
          deblasio = candidates.getJSONObject("74536");
          lhota = candidates.getJSONObject("74535");
        
          String deblasio_test = deblasio.getString("ballot_name");
          Float deblasio_pct_float = deblasio.getFloat("vote_percent");
          // note that we take this in as a string because "Serial.write" doesn't do floats
          
          String lhota_test = lhota.getString("ballot_name");
          Float lhota_pct_float = lhota.getFloat("vote_percent");
           
          // set the number of deblasio LEDs to light up
          // as a percentage of 60 LEDs on the whole strip ...
          float d_temp = 60 * (deblasio_pct_float / 100);
          float l_temp = 60 * (lhota_pct_float / 100);
           
          // add .5 because we want to round and the cast function just truncates
          d_temp = d_temp + 0.5;
          l_temp = l_temp + 0.5;
          
          // set the number of LEDs to light up
          // cast d_temp as an integer (so 8.7 will become 8)
          String deblasio_light_up = str((int) d_temp);
          String lhota_light_up = str((int) l_temp);
        
           
          // write data to the screen
          println(deblasio_test + " " + deblasio_pct_float + "% LEDs: " + deblasio_light_up);
          println(lhota_test + " " + lhota_pct_float + "% LEDs: " + lhota_light_up);
         
          // write the comma-separated values to the serial port
          port.write(deblasio_light_up);
          port.write(",");
          port.write(lhota_light_up);
    
  }
  
}