A More Realistic Electric Fireplace

// Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
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// Disclaimer
//
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//
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// No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
//
// Notices:
// You do not have to comply with the license for elements of the material in the public domain or where your use is permitted by an applicable exception or limitation.
// No warranties are given. The license may not give you all of the permissions necessary for your intended use. For example, other rights such as publicity, privacy, or moral rights may limit how you use the material.
//
// github: https://github.com/gusgonnet
// hackster: https://www.hackster.io/gusgonnet
//
// Free for personal use.
//
// https://creativecommons.org/licenses/by-nc-sa/4.0/

#include <blynk.h>

#define BLYNK_BUTTON_ON_OFF V27
#define BLYNK_SLIDER_VOLUME V28
#define BLYNK_BUTTON_VOLUME V29

// DO NOT SHARE YOUR BLYNK TOKEN
char auth[] = "123720194708912734981273408912";

bool soundOn = false;
bool volumeHigh = false;
String volumeLevel = "-1800";

// auto on in the morning
const String timeOn = "09:00AM";
// auto off at midnight
const String timeOff = "11:59PM";


void setup() {

  //set time zone and format
  Time.zone(-5);
  Time.setFormat(TIME_FORMAT_ISO8601_FULL);
    
  Particle.function("playSound", playSound);
  Particle.function("stopSound", stopSound);
  Blynk.begin(auth);
}

void loop() {
  Blynk.run();
  
  // get time. Example: 10:38PM
  String timeNow = Time.format(Time.now(), "%I:%M%p");

  if (timeNow == timeOn)
  {
    soundOn = true;
    playSound("");
  }
  if (timeNow == timeOff)
  {
    stopSound("");
    soundOn = false;
  }  
  
 // this delay will slow down this rasppi particle agent process so the pi keeps its cool ;)
 // without this delay, top (the command line util on the pi) shows 100% CPU use (of the firmware.bin process)
 // with this delay in place, top shows 2% CPU use, which is much better
 delay(1000);
}


int playSound( String dummyParameter ) {
    
  // set the volume to your liking as explained here: 
  // https://stackoverflow.com/questions/33162820/adjust-audio-volume-level-with-cli-omxplayer-raspberry-pi
  Process proc;
  
  proc = Process::run("omxplayer --vol " + volumeLevel + " --loop /home/pi/fire.mp3 &");      
  Particle.publish("Napoleon Sound Fx", "Sound on", PRIVATE);
  
  proc.wait();
 
  return 0;
}

int stopSound( String dummyParameter ) {
    
  Process proc = Process::run("sudo killall omxplayer.bin");
  proc.wait();
  Particle.publish("Napoleon Sound Fx","Sound off", PRIVATE);
  return 0;
}

BLYNK_WRITE(BLYNK_BUTTON_ON_OFF)
{
  // background: in a BLYNK push button, blynk sends 0 then 1 when user taps on it
  // source: http://docs.blynk.cc/#widgets-controllers-button
  if (param.asInt() == 1)
  {
    soundOn = true;
    playSound("");
  } else
  {
    stopSound("");
    soundOn = false;
  }
}

BLYNK_WRITE(BLYNK_BUTTON_VOLUME)
{
  // background: in a BLYNK push button, blynk sends 0 then 1 when user taps on it
  // source: http://docs.blynk.cc/#widgets-controllers-button
  if (param.asInt() == 1)
  {
    volumeHigh = true;
  } else
  {
    volumeHigh = false;
  }

  if ( soundOn )
  {
    stopSound("");
    playSound("");
  }

}

BLYNK_WRITE(BLYNK_SLIDER_VOLUME)
{
  // background: in a BLYNK push button, blynk sends 0 then 1 when user taps on it
  // source: http://docs.blynk.cc/#widgets-controllers-button
  if (param.asInt() == 1)
  {
    volumeLevel = "-1800";
  }
  if (param.asInt() == 2)
  {
    volumeLevel = "-1000";
  }
  if (param.asInt() == 3)
  {
    volumeLevel = "-1";
  }
  
  if ( soundOn )
  {
    stopSound("");
    playSound("");
  }

}