Reef Angel Forum

Where are the sunrise/sunset times coming from? I see GPS mentioned but don't understand where the information is being pulled from in the code.

When you run the Init function you set the coordinates. If you don't specify it will use GBR coordinates by default

I think you have to set the GPS through the Init function.

There is a "Constructor" function for the SunLocation class, but I think the way we use it, it's never called.

Typically in C++ you use pointers and a constructor to do the following:
Notice the * that means we're pointing to a location in memory and the new function returns the memory address of a newly created SunLocation class. Since we're a bit more basic, we never actually run a constructor when you do this:
So with that you'd have to run the Init in order to set the coordinates. I may modify the class to have an Init() with no args so you can use the defaults.

For the record the code is in Libraries/SunLocation and you can see in SunLocation.cpp the first two functions, the first being the constructor I mentioned and the second being the Init function.

lnevo wrote:When you run the Init function you set the coordinates. If you don't specify it will use GBR coordinates by default

I see reference to Great Barrier Reef in there but nothing else; is that just a reference? I dont have any issues using that lat/long, I was just curious. I'm not even going to try and make sense out of the moon library yet; that one left me googly eyed.

Yeah I'd say for now it only works as a reference but yes feel free to use those with the Init function with those values.

lnevo wrote:Here is the excerpt from my code that references SunLocation. I think it's pretty self explanatory. One thing to keep in mind is that if sun.UseMemory==true, which is the default, then it will write the Daylight on/off times each day.

$ egrep -i 'SunLocation|sun\.' Wizard65.ino

Code: Select all

#include <SunLocation.h>
SunLocation sun;
  sun.Init(InternalMemory.read_int(Mem_I_Latitude), InternalMemory.read_int(Mem_I_Longitude));
  sun.SetOffset(riseOffset,(acclDay*acclRiseOffset),setOffset,(-acclDay*acclSetOffset)); // Bahamas
  sun.CheckAndUpdate(); // Calculate today's Sunrise / Sunset
  tide.SetSpeed(PWMSlope(sun.GetRiseHour()-1,sun.GetRiseMinute(),
    sun.GetSetHour(),sun.GetSetMinute(),nightSpeed+tideMin,vtSpeed,120,nightSpeed+tideMin));
  } else if (!sun.IsDaytime() && nightRF) {
    if (sun.IsDaytime() && (now()+offset)%repeat==0) {
  sprintf(buf, "%02d:%02d", sun.GetRiseHour(), sun.GetRiseMinute());
  sprintf(buf, "%02d:%02d", sun.GetSetHour(), sun.GetSetMinute()); x+=36;

I'd like to get this going but my lights dont dim to 0 (SBReef basic black boxes) so I use relays 5 and 6 for on/off functionality. Is there a way to tie that in so the relay and rise/set functions work together?

Yes, what I do is if my dim % is >= the percent they go off, the. i turn the relay on. Otherwise they are off.

The other thing you can do is set the start and end percentage to be when your lights go off. This way you get the full photoperiod.