Serial issues and self-written library

Projects Programming
1

Hi all, first post here, and relatively new to Arduino in general, but versed in c++ and to a lesser extent EE.

I'm working on a project for DMX control of a RGB + Amber LED lighting fixture, and am using an Uno + the tinker kit DMX master shield. I've also built an analog sound sensor with a lowpass filter to detect the beat of music, run thru an op-amp (plug in your music instead of using a microphone). The sound sensor works fine, the serial works fine, I can output DMX signals to the lighting fixture UNTIL...

I wrote a library for the purpose of having a number of preset colors that could be selected at random / at will within the given logic for the programming. One example is on a sound trigger, pick another random color from the library and send to the fixture through DMX. When I include this library and create an object from the class the serial monitor has no output and the program does not run. I have absolutely no clue as to why this is but I have isolated that the serial monitor does not output when I include the line that initializes the class (line 4). Code is below.

Any insight is much appreciated!

Client code

#include <DmxSimple.h>
#include <RGBA_LIB.h>

RGBA_LIB colorgen;
color fixture;
int analogPin = 5;
int val;
int threshold = 100;

void setup() {
  Serial.begin(9600);
}

void loop(){
     val = analogRead(analogPin);
     if(val > threshold){
       fixture = colorgen.random();
       DmxSimple.write(1, fixture.R);
       DmxSimple.write(2, fixture.G);
       DmxSimple.write(3, fixture.B);
       DmxSimple.write(4, fixture.A);
       DmxSimple.write(5, 255);
       DmxSimple.write(6, 0);
       DmxSimple.write(7, 0);
       DmxSimple.write(8, 0);
       delay(100);
     }else{ 
       DmxSimple.write(5, 0);    
       delay(25);
  }
}

Header file

#ifndef RGBA_LIB_H
#define RGBA_LIB_H

#include <Arduino.h>

struct color{
	int R, G, B, A;
};

class RGBA_LIB{
    color list[48];
    int i;
public:
	RGBA_LIB();
	~RGBA_LIB();
	color random();
	
};

#endif

Implementation file

#include <RGBA_LIB.h>
#include <Arduino.h>

RGBA_LIB::RGBA_LIB(){
		
	color AA = {255, 0, 0, 0};
	list[0] = AA;
	
	color AB = {0, 255, 0, 0};
	list[1] = AB;
		
	color AC = {0, 0, 255, 0};
	list[2] = AC;	
	
	color AD = {0, 0, 0, 255};
	list[3] = AD;

	// many more colors after this
}	
	
		
RGBA_LIB::~RGBA_LIB(){
}


color RGBA_LIB::random(){
	//choose i
	int i = rand() % 67;
	return list[i];

}
2 
    color list[48];

...

color RGBA_LIB::random(){
	//choose i
	int i = rand() % 67;
	return list[i];

}

Uh oh.

3

It has the same issues with the correct # of indices for list[]. Unless the "Uh oh" was referring to something else I missed :p.

4

I'm not sure what you mean by that but if this:

// many more colors after this

initializes more than 48 elements you have a problem.