passing a value to a library question

Using Arduino Programming Questions
#1

Good day everyone!

I’m trying to figure out how to pass a boolean value to a library. I started out by using the ‘morse’ library example code found here: Arduino - LibraryTutorial

Which works. I added in some code to print data to the serial console and now I’m seeking a way to control if that data is printed or not. Here’s my arduino skectch:

#include <Morse.h>

Morse morse(A5);    // led pin is A5
Morse Debug(true);  // debug flag

void setup()
{
  while (!Serial);
  
  Serial.begin(115200);
  
}

void loop()
{
  morse.dot(); morse.dot(); morse.dot();
  morse.dash(); morse.dash(); morse.dash();
  morse.dot(); morse.dot(); morse.dot();
  delay(3000);
}

My Morse.h file is:

/*
  Morse.h - Library for flashing Morse code.
  Created by David A. Mellis, November 2, 2007.
  Released into the public domain.
*/
#ifndef Morse_h
#define Morse_h

#include "Arduino.h"

class Morse
{
  public:
    Morse(int pin);
    Debug(boolean debug);
    void dot();
    void dash();
  private:
    int _pin;
    boolean _debug;
};

#endif

and my Morse.cpp file is:

/*
  Morse.cpp - Library for flashing Morse code.
  Created by David A. Mellis, November 2, 2007.
  Released into the public domain.
*/

#include "Arduino.h"
#include "Morse.h"

Morse::Morse(int pin)
{
  pinMode(pin, OUTPUT);
  _pin = pin;
}

Morse::Debug(boolean debug)
{
  _debug = debug;
}

void Morse::dot()
{
  digitalWrite(_pin, HIGH);

  if (_debug)  {
    Serial.println("HIGH");
  }

  delay(250);
  digitalWrite(_pin, LOW);
  Serial.println("LOW");
  delay(250);  
}

void Morse::dash()
{
  digitalWrite(_pin, HIGH);
  delay(1000);
  digitalWrite(_pin, LOW);
  delay(250);
}

As is, right now, no matter what I set the ‘Morse Debug(true); // debug flag’ to, the data won’t print in the void Morse::dot() function.

Basically, I’m looking for a way to control when a library prints data to the serial.

Thanks and have a good day!
Randy

#2

try:

#include <Morse.h>
Morse morse(A5);    // led pin is A5

void setup()
{
  while (!Serial);
  Serial.begin(115200);
  morse.Debug(true);  // debug flag
}

void loop()
{
  morse.dot(); morse.dot(); morse.dot();
  morse.dash(); morse.dash(); morse.dash();
  morse.dot(); morse.dot(); morse.dot();
  delay(3000);
}
#3

If I had the problem, I would copy the entire "library" file into my Arduino code file and make it my own. Then you can change the code any way you desire.

Paul

#4

or add it as an argument in the contructor

    Morse(int pin, boolean debug);

Morse morse(A5, true);
#5

@ aarg - that didn't work, no change in behavior

@ Paul_KD7HB - that idea would work for a simple example like this, but the library I want to use this in is over 2000 lines, not something I want in the 1500 lines I have so far

gcjr:
or add it as an argument in the contructor

    Morse(int pin, boolean debug);

Morse morse(A5, true);

This works! I will have to look up the constructor part, I'm not sure I really understand that part.

If anyone has a good source to read up on the constructor part, please drop a link...

Thanks everyone!
Randy

#6