Cloud and Lightning Code for Dimming Expansion

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PostPosted: Sun Jun 21, 2015 12:16 pm
Here it is. See this thread for general instructions.

Up in the globals section (somewhere before void setup()) add this line:

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int DaylightPWMValue=0;        // For cloud code


In your loop, you need to find whatever function is controlling your white lights and set it to the DaylightPWMValue variable. For example, I use something like this:

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DaylightPWMValue=PWMSlopeHighRes(10,30,22,0,0,85,60,0);
 CheckCloud();
 ReefAngel.PWM.SetChannelRaw(1,DaylightPWMValue);


Which is a high res (12 bit) slope that starts at 1030, runs until 2200, starts at 0%, ends at 85%, and takes 60 minutes to ramp up and down. If this part confuses you, post your lighting control code and I can help you with it.

Essentially what this section does is set the baseline lighting for when there is no cloud going on. This is your everyday lighting routine.

At the very end of your code, after the final }, paste in all this stuff.

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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_X_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 100

  // 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 7

  // Minimum number of clouds that can happen per day
#define Min_Clouds_per_Day 1

  // Maximum number of clouds that can happen per day
#define Max_Clouds_per_Day 2

  // Only start the cloud effect after this setting
  // In this example, start cloud after noon
#define Start_Cloud_After NumMins(12,00)

  // Always end the cloud effect before this setting
  // In this example, end cloud before 9:00pm
#define End_Cloud_Before NumMins(21,00)

  // 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 100

  // 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.

  // Add Random Lightning modes
#define Calm 0    // No lightning
#define Slow 1    // 5 seconds of slow lightning in the middle of a cloud for ELN style (slow response) drivers
#define Fast 2    // 5 seconds of fast lightning in the middle of a cloud for LDD style (fast response) drivers
#define Mega 3    // Lightning throughout the cloud, higher chance as it gets darker
#define Mega2 4   // Like Mega, but with more lightning
  // Set which modes you want to use
  // Example:  { Calm, Fast, Mega, Mega2 } to randomize all four modes. 
  // { Mega2 } for just Mega2.  { Mega, Mega, Fast} for Mega and Fast, with twice the chance of Mega.
  byte LightningModes[] = {Mega2,Mega,Mega};

  // 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;
  static byte lightningMode=0;
  static boolean chooseLightning=true;

  static time_t DelayCounter=millis();    // Variable for lightning timing. 
  static int DelayTime=random(1000);      // Variable for lightning timimg.

  // 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
    {
      randomSeed(millis());    // Seed the random number generator
      //Pick a random number between 0 and 99
      cloudchance=random(100);
      // 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_X_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(100);
        // 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/40.95,0,180)*40.95;
      if (chooseLightning)
      {
        lightningMode=LightningModes[random(100)%sizeof(LightningModes)];
        chooseLightning=false;
      }
      switch (lightningMode)
      {
      case Calm:
        break;
      case Mega:
        // Lightning chance from beginning of cloud through the end.  Chance increases with darkness of cloud.
        if (lightningchance && random(ReversePWMSlope(cloudstart,cloudstart+cloudduration,100,0,180))<1 && (millis()-DelayCounter)>DelayTime)
        {
          // Send the trigger
          Strike();
          DelayCounter=millis();    // If we just had a round of flashes, then lets put in a longer delay
          DelayTime=random(1000);   // of up to a second for dramatic effect before we do another round.
        }
        break;
      case Mega2:
        // Higher lightning chance from beginning of cloud through the end.  Chance increases with darkness of cloud.
        if (lightningchance && random(ReversePWMSlope(cloudstart,cloudstart+cloudduration,100,0,180))<2)
        {
          Strike();
        }
        break;
      case Fast:
        // 5 seconds of lightning in the middle of the cloud
        if (lightningchance && (NumMins(hour(),minute())==(cloudstart+(cloudduration/2))) && second()<5 && (millis()-DelayCounter)>DelayTime)
        {
          Strike();

          DelayCounter=millis();    // If we just had a round of flashes, then lets put in a longer delay
          DelayTime=random(1000);   // of up to a second for dramatic effect before we do another round.
        }
        break;
      case Slow:
        // Slow lightning for 5 seconds in the middle of the cloud.  Suitable for slower ELN style drivers
        if (lightningchance && (NumMins(hour(),minute())==(cloudstart+(cloudduration/2))) && second()<5)
        {
          if (random(100)<20) lightningstatus=1;
          else lightningstatus=0;
          if (lightningstatus)
          {
            DaylightPWMValue=4095;
          }
          else
          {
            DaylightPWMValue=0;
          }
          delay(1);
        }
        break;
      default:
        break;
      }
    }
    else
    {
      chooseLightning=true; // Reset the flag to choose a new lightning type
    }

    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(100);
        // if picked number is greater than Lightning_Change_per_Cloud, we will not have lightning today
        if (lightningchance>Lightning_Change_per_Cloud) lightningchance=0;
      }
    }
  }

  // Write the times of the next cloud, next lightning, and cloud duration to the screen and into some customvars for the Portal.
  if (LastNumMins!=NumMins(hour(),minute()))
  {
    LastNumMins=NumMins(hour(),minute());
    /*ReefAngel.LCD.Clear(255,0,120,132,132);
     ReefAngel.LCD.DrawText(0,255,5,120,"C");
     ReefAngel.LCD.DrawText(0,255,11,120,"00:00");
     ReefAngel.LCD.DrawText(0,255,45,120,"L");
     ReefAngel.LCD.DrawText(0,255,51,120,"00:00"); */
    if (cloudchance && (NumMins(hour(),minute())<cloudstart))
    {
      int x=0;
      if ((cloudstart/60)>=10) x=11;
      else x=17;
      //ReefAngel.LCD.DrawText(0,255,x,120,(cloudstart/60));
      ReefAngel.CustomVar[3]=cloudstart/60; // Write the hour of the next cloud to custom variable for Portal reporting
      if ((cloudstart%60)>=10) x=29;
      else x=35;
      //ReefAngel.LCD.DrawText(0,255,x,120,(cloudstart%60));
      ReefAngel.CustomVar[4]=cloudstart%60; // Write the minute of the next cloud to custom variable for Portal reporting

    }
    //ReefAngel.LCD.DrawText(0,255,90,120,cloudduration);
    ReefAngel.CustomVar[7]=(cloudduration);    // Put the duration of the next cloud in a custom var for the portal
    if (lightningchance)
    {
      int x=0;
      if (((cloudstart+(cloudduration/2))/60)>=10) x=51;
      else x=57;
      //ReefAngel.LCD.DrawText(0,255,x,120,((cloudstart+(cloudduration/2))/60));
      ReefAngel.CustomVar[5]=(cloudstart+(cloudduration/2))/60;    // Write the hour of the next lightning to a custom variable for the Portal
      if (((cloudstart+(cloudduration/2))%60)>=10) x=69;
      else x=75;
      //ReefAngel.LCD.DrawText(0,255,x,120,((cloudstart+(cloudduration/2))%60)); // Write the minute of the next lightning to a custom variable for the Portal
        ReefAngel.CustomVar[6]=(cloudstart+(cloudduration/2))%60;
    }
  }   
}

void Strike()
{
  int a=random(1,5);    // Pick a number of consecutive flashes from 1 to 4. 
  for (int i=0; i<a; i++)
  {
    // Flash on
    int newdata=4095;
    Wire.beginTransmission(0x40);      // Address of the dimming expansion module
    Wire.write(0x8+(4*1));             // 0x8 is channel 0, 0x12 is channel 1, etc.  I'm using channel 1.
    Wire.write(newdata&0xff);          // Send the data 8 bits at a time.  This sends the LSB
    Wire.write(newdata>>8);            // This sends the MSB
    Wire.endTransmission();
   
    int randy=random(20,80);    // Random number for a delay
    if (randy>71) randy=((randy-70)/2)*100;    // Small chance of a longer delay
    delay(randy);                // Wait from 20 to 69 ms, or 100-400 ms
   
    // Flash off.  Return to baseline.
    newdata=ReefAngel.PWM.GetChannelValueRaw(1);   // Use the channel number you're flashing here
    Wire.beginTransmission(0x40);    // Same as above
    Wire.write(0x8+(4*1));
    Wire.write(newdata&0xff);
    Wire.write(newdata>>8);
    Wire.endTransmission();
   
    delay(random(30,50));                // Wait from 30 to 49 ms
    wdt_reset();    // Reset watchdog timer to avoid re-boots
  }
}

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 (int) PWMStart;
}



As written, this flashes channel 1 on the standard 6 channel Dimming Expansion Module.

This version does not write times to the screen. That option does not work well with the new screen functions. It will write the times into the custom variables so you can see them on the portal.

What's new:

Lightning generator broken out into its own function strike() since it's somewhat longer and more complicated now for the dimming module.

Everything is in 12 bit hi-res now. This pretty much breaks "Slow" mode. I should probably just depreciate it.

As always, ask away with any questions or comments.

--Colin
Last edited by cosmith71 on Tue Jun 23, 2015 2:48 am, edited 2 times in total.
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PostPosted: Sun Jun 21, 2015 12:17 pm
Reserved for future use.

--Colin
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Location: Davie, FL
PostPosted: Sun Jun 21, 2015 12:31 pm
Awesome Colin.
I just need to get some time to mod my lights for the control.
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PostPosted: Mon Jun 22, 2015 8:49 am
I still want slow mode :)

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Location: An Oklahoman in Ohio
PostPosted: Mon Jun 22, 2015 9:37 pm
Are you able to use this along with the sunlocation code?
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PostPosted: Tue Jun 23, 2015 2:44 am
Probably not without modification.

--Colin
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PostPosted: Tue Jun 23, 2015 2:49 am
lnevo wrote:I still want slow mode :)


Fixed, just for you. :D
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PostPosted: Tue Jun 23, 2015 7:53 am
I think Steve would have needed it too, he just doesn't know it yet.
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PostPosted: Tue Jun 23, 2015 8:02 am
OK. Thanks????
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PostPosted: Tue Jun 23, 2015 3:22 pm
Your hacking blacboxes yes?
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