Memorial_Lights.ino

#include <SPI.h>

#include <RTClib.h>

#include <SD.h>

#include <Adafruit_NeoPixel.h>

#ifdef __AVR__
  #include <avr/power.h>
#endif
//Copyright (C) 2016-2017 Rashi Abramson. All Rights Reserved.
long FIRST_63_LEDS = 0;

#define PIN 6
#define WHITE 0xFFFFFF
#define DAY_IN_MILLISECONDS 1000 //* 60 * 60 //* 24
// Parameter 1 = number of pixels in strip
// Parameter 2 = Arduino 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)
//   NEO_RGBW    Pixels are wired for RGBW bitstream (NeoPixel RGBW products)
Adafruit_NeoPixel strip = Adafruit_NeoPixel(60, PIN, NEO_GRB + NEO_KHZ800);

// IMPORTANT: To reduce NeoPixel burnout risk, add 1000 uF capacitor across
// pixel power leads, add 300 - 500 Ohm resistor on first pixel's data input
// and minimize distance between Arduino and first pixel.  Avoid connecting
// on a live circuit...if you must, connect GND first.


///rtc global variable.
RTC_DS1307 rtc;

//CSV file for lights global variable
File currentFile;


void setup() {
  // This is for Trinket 5V 16MHz, you can remove these three lines if you are not using a Trinket
  #if defined (__AVR_ATtiny85__)
    if (F_CPU == 16000000) clock_prescale_set(clock_div_1);
  #endif
  // End of trinket special code
  Serial.begin(9600);

  //initialize color strip with pins DIN -> 6, 5v -> 5v, and GND -> GND
  strip.setBrightness(255);
  strip.begin();
  strip.show(); // Initialize all pixels to 'off'

  while (!Serial) {
    ; // wait for serial port to connect. Needed for native USB port only
  }
  Serial.println(F("ARDUINO STARTED."));

 if (! rtc.begin()) {
    Serial.println(F("Couldn't find RTC"));
    while (1);
  } else {
    Serial.println(F("RTC found."));
  }

 //initialize real time clock with pins SCL -> A4, SDA -> A5, SQW -> Unused, 5V -> 5V, GND -> GND
  if (! rtc.isrunning()) {
    Serial.println(F("RTC is NOT running! Date/Time being set."));
    // following line sets the RTC to the date & time this sketch was compiled
     rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
    // This line sets the RTC with an explicit date & time, for example to set
    // January 21, 2014 at 3am you would call:
    // rtc.adjust(DateTime(2016, 11, 22, 3, 0, 0));
  } else {
    Serial.println(F("RTC IS running."));
    rtc.adjust(DateTime(2016, 11, 22, 3, 0, 0)); //For debugging different dates
    //rtc.adjust(DateTime(F(__DATE__), F(__TIME__))); //For reseting the correct datetime during debug
  }
  
  //initialize sd card Pins: CLK -> 13, MISO -> 12, MOSI -> 11, CS -> 4, 3V3 -> 3V, GND -> GND
  Serial.print(F("Initializing SD card..."));

  if (!SD.begin(4)) {
    Serial.println(F("initialization failed!"));
    return;
  }
  Serial.println(F("initialization done."));
}


bool isTwo = false;

void loop() {
  // Some example procedures showing how to display to the pixels:
  DateTime timeNow = rtc.now();
  int dayOfMonth = timeNow.day(); //0-based day, month ranges from 0-30, inclusive.
  int monthOfYear = timeNow.month();
  int yearOfMillenia = timeNow.year(); //Current year, would have used year, but year conflicts with keyword "year"


  currentFile = SD.open("lights.csv", FILE_READ); //No second parameter for reading, 8.3 filename
  if (!currentFile) {
    Serial.println(F("ERROR: lights.csv could not be read.\n\n"
    " Are multiple files being attempted to be read? \nDoes the file exists and is it properly named?"));
    return;
  }

  //Advance past column headings
    Serial.println(F("lights.csv:"));
    while(currentFile.available() && currentFile.peek() != '\n'){
      Serial.print((char)currentFile.read());
    }

  String nowDate = String( String(monthOfYear) + "/" + String(dayOfMonth) + "/" + String(yearOfMillenia) );
  Serial.println(F("Day:\tMonth:\tYear:\t"));
  Serial.print(dayOfMonth);
  Serial.print("\t");
  Serial.print(monthOfYear);
  Serial.print("\t");
  Serial.println(yearOfMillenia);
  
  String fileDate = String("");

  bool foundDate = false;

  while(!foundDate){
    while( currentFile.available() && (currentFile.peek() == '\r' || currentFile.peek() == '\n') ){
      currentFile.read();
    }
    while(currentFile.available() && currentFile.peek() != ','){
      fileDate.concat ( (char)currentFile.read() );
    }
    foundDate = (fileDate.compareTo(nowDate) == 0); //set terminating condition

    Serial.println(foundDate ? F("File date DID matched today's date.") : F("File date DIDN'T match today's date."));
    Serial.print(F("I think today is \""));
    Serial.print(nowDate.c_str());
    Serial.print(F("\" and the file's date was \""));
    Serial.print(fileDate.c_str());
    Serial.print(F("\". I got a comparison value of "));
    Serial.println(fileDate.compareTo(nowDate));

    if(!foundDate){ //if we haven't foundDate yet, move on to next line.
      while( currentFile.available() && (currentFile.peek() != '\r' && currentFile.peek() != '\n') ){
       currentFile.read();
      }
      fileDate = String("");
    }
  }
  
   while( currentFile.available() && !isDigit( (char)currentFile.peek() ) ){ //read until the next character is a digit
      currentFile.read();
    }

    Serial.println(F("Digit encountered."));
    //reset strip colors by flushing pixel buffer by showing buffer twice. Second buffer will be all zeros.
    strip.show(); strip.show();

  //Read each number and display pixel
  
    uint32_t warm_white = 
    strip.Color(0xFF, 0xFF, 0xFF);  

    while(currentFile.available() && currentFile.peek() != '"'){ //keep going until the quote.
      
      String lightNumber = String("");
  
      while( currentFile.available() && isDigit( (char)currentFile.peek() ) ) //While next character in file is a digit...
      {
        lightNumber.concat( (char)currentFile.read() ); //add it to the digit string!
      }
      
      Serial.print( F("Setting pixel ") );
      Serial.print(lightNumber.c_str());
      Serial.println( F(" to on.") );
      //Set the pixel at the integer-parsed location to the color (warm white was the name) as defined above.
      strip.setPixelColor(lightNumber.toInt(), warm_white);

      //Skip to next number or to quote...
    while( currentFile.available() && !isDigit( (char)currentFile.peek()) && currentFile.peek() != '"' ){ //read until the next character is a digit
      currentFile.read();
    }

    Serial.println(F("Digit encountered."));
    }
    
    // "other white" 
    //strip.Color(0xFF,0x80,0x20);  
    //yellow strip.Color(255,100,0);


  strip.show();

  //close file handle.
  currentFile.close();

  //delay until next update.
  delay(DAY_IN_MILLISECONDS);
}


/*
 * Example of how code works.
 *
 * void rainbow(uint8_t wait) {
  uint16_t i, j;

  for(j=0; j<256; j++) {
    for(i=0; i<strip.numPixels(); i++) {
      strip.setPixelColor(i, Wheel((i+j) & 255));
    }
    strip.show();
    delay(wait);
  }
}*/