Reef Angel Forum

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  // Cloud & Lightning effects - Calculate your regular sunrise/sunset PWM value
  // From Roberto - THANKS ROBERTO!
  // byte PWMSlope(byte startHour, byte startMinute, byte endHour, byte endMinute, byte startPWM, byte endPWM, byte Duration, byte oldValue)
  if (hour()>=22 || hour()<8)
    {
      ReefAngel.PWM.SetActinic(MoonPhase());  //Moon phase schedule between 7:00pm - 7:00am
    }
  else
    {
      ActinicPWMValue=PWMSlope(12,00,19,0,0,90,150,ActinicPWMValue); //Actinic turn on at 7am, off at 10am, and ramp up 0% to 50% PWM in 60 minutes
      //ActinicPWMValue=PWMSlope(16,00,19,0,0,50,60,ActinicPWMValue); //Actinic turn on at 4pm, off at 7pm, and ramp up 0% to 50% PWM in 60 minutes
      ReefAngel.PWM.SetActinic(ActinicPWMValue);
    }
  DaylightPWMValue=PWMSlope(8,00,22,0,0,90,240,DaylightPWMValue); //Daylight turn on at 9am, off at 5pm, and ramp up 0% to 50% PWM in 60 minutes
  CheckCloud(); 
  ReefAngel.PWM.SetDaylight(DaylightPWMValue);
}

//*********************************************************************************************************************************
// Random Cloud/Thunderstorm effects function
// From Roberto - THANKS ROBERTO!
void CheckCloud()
{

  // ------------------------------------------------------------
  // Change the values below to customize your cloud/storm effect

  // Frequency in days based on the day of the month - number 2 means every 2 days, for example (day 2,4,6 etc)
  // For testing purposes, you can use 1 and cause the cloud to occur everyday
#define Clouds_Every_5_Days 1 

  // Percentage chance of a cloud happening today
  // For testing purposes, you can use 100 and cause the cloud to have 100% chance of happening
#define Cloud_Chance_per_Day 25

  // Minimum number of minutes for cloud duration.  Don't use max duration of less than 6
#define Min_Cloud_Duration 7

  // Maximum number of minutes for the cloud duration. Don't use max duration of more than 255
#define Max_Cloud_Duration 15

  // Minimum number of clouds that can happen per day
#define Min_Clouds_per_Day 3

  // Maximum number of clouds that can happen per day
#define Max_Clouds_per_Day 6

  // Only start the cloud effect after this setting
  // In this example, start could after 11:30am
#define Start_Cloud_After NumMins(11,30)

  // Always end the cloud effect before this setting
  // In this example, end could before 4:30pm
#define End_Cloud_Before NumMins(20,0)

  // Percentage chance of a lightning happen for every cloud
  // For testing purposes, you can use 100 and cause the lightning to have 100% chance of happening
#define Lightning_Change_per_Cloud 25

  // Note: Make sure to choose correct values that will work within your PWMSLope settings.
  // For example, in our case, we could have a max of 5 clouds per day and they could last for 50 minutes.
  // Which could mean 250 minutes of clouds. We need to make sure the PWMSlope can accomodate 250 minutes of effects or unforseen result could happen.
  // Also, make sure that you can fit double those minutes between Start_Cloud_After and End_Cloud_Before.
  // In our example, we have 510 minutes between Start_Cloud_After and End_Cloud_Before, so double the 250 minutes (or 500 minutes) can fit in that 510 minutes window.
  // It's a tight fit, but it did.

    //#define printdebug // Uncomment this for debug print on Serial Monitor window
#define forcecloudcalculation // Uncomment this to force the cloud calculation to happen in the boot process. 


    // Change the values above to customize your cloud/storm effect
  // ------------------------------------------------------------
  // Do not change anything below here

  static byte cloudchance=255;
  static byte cloudduration=0;
  static int cloudstart=0;
  static byte numclouds=0;
  static byte lightningchance=0;
  static byte cloudindex=0;
  static byte lightningstatus=0;
  static int LastNumMins=0;
  // Every day at midnight, we check for chance of cloud happening today
  if (hour()==0 && minute()==0 && second()==0) cloudchance=255;

#ifdef forcecloudcalculation
  if (cloudchance==255)
#else
    if (hour()==0 && minute()==0 && second()==1 && cloudchance==255) 
#endif
    {
      //Pick a random number between 0 and 99
      cloudchance=random(26); 
      // if picked number is greater than Cloud_Chance_per_Day, we will not have clouds today
      if (cloudchance>Cloud_Chance_per_Day) cloudchance=0;
      // Check if today is day for clouds. 
      if ((day()%Clouds_Every_5_Days)!=0) cloudchance=0; 
      // If we have cloud today
      if (cloudchance)
      {
        // pick a random number for number of clouds between Min_Clouds_per_Day and Max_Clouds_per_Day
        numclouds=random(Min_Clouds_per_Day,Max_Clouds_per_Day);
        // pick the time that the first cloud will start
        // the range is calculated between Start_Cloud_After and the even distribuition of clouds on this day. 
        cloudstart=random(Start_Cloud_After,Start_Cloud_After+((End_Cloud_Before-Start_Cloud_After)/(numclouds*2)));
        // pick a random number for the cloud duration of first cloud.
        cloudduration=random(Min_Cloud_Duration,Max_Cloud_Duration);
        //Pick a random number between 0 and 99
        lightningchance=random(36);
        // if picked number is greater than Lightning_Change_per_Cloud, we will not have lightning today
        if (lightningchance>Lightning_Change_per_Cloud) lightningchance=0;
      }
    }
  

  // Now that we have all the parameters for the cloud, let's create the effect
  if (cloudchance)
  {
    //is it time for cloud yet?
    if (NumMins(hour(),minute())>=cloudstart && NumMins(hour(),minute())<(cloudstart+cloudduration))
    {
      DaylightPWMValue=ReversePWMSlope(cloudstart,cloudstart+cloudduration,DaylightPWMValue,0,180);
      if (lightningchance && (NumMins(hour(),minute())==(cloudstart+(cloudduration/2))) && second()<5) 
      {
        if (random(100)<20) lightningstatus=1; 
        else lightningstatus=0;
        if (lightningstatus)
        {
          DaylightPWMValue=100; 
          ActinicPWMValue=100;
        }
        else 
        {
          DaylightPWMValue=0;
          ActinicPWMValue=0;
        }
        delay(1);
      }
    }
    if (NumMins(hour(),minute())>(cloudstart+cloudduration))
    {
      cloudindex++;
      if (cloudindex < numclouds)
      {
        cloudstart=random(Start_Cloud_After+(((End_Cloud_Before-Start_Cloud_After)/(numclouds*2))*cloudindex*2),(Start_Cloud_After+(((End_Cloud_Before-Start_Cloud_After)/(numclouds*2))*cloudindex*2))+((End_Cloud_Before-Start_Cloud_After)/(numclouds*2)));
        // pick a random number for the cloud duration of first cloud.
        cloudduration=random(Min_Cloud_Duration,Max_Cloud_Duration);
        //Pick a random number between 0 and 99
        lightningchance=random(54);
        // if picked number is greater than Lightning_Change_per_Cloud, we will not have lightning today
        if (lightningchance>Lightning_Change_per_Cloud) lightningchance=0;
      }
    }
    
}

byte ReversePWMSlope(long cstart,long cend,byte PWMStart,byte PWMEnd, byte clength)
{
  long n=elapsedSecsToday(now());
  cstart*=60;
  cend*=60;
  if (n<cstart) return PWMStart;
  if (n>=cstart && n<=(cstart+clength)) return map(n,cstart,cstart+clength,PWMStart,PWMEnd);
  if (n>(cstart+clength) && n<(cend-clength)) return PWMEnd;
  if (n>=(cend-clength) && n<=cend) return map(n,cend-clength,cend,PWMEnd,PWMStart);
  if (n>cend) return PWMStart;
  //End Cloud & Lighting 
}

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[color=#FF0000]byte ReversePWMSlope(long cstart,long cend,byte PWMStart,byte PWMEnd, byte clength)[/color]

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byte ReversePWMSlope(long cstart,long cend,byte PWMStart,byte PWMEnd, byte clength)