Including Class with .h and .cpp files

Question

I am trying to use a class in .ino file. The code is:

.ino file

#include <LED.h>
int Pin1 = 13;
int Pin2 = 12;
int Pin3 = 11;
LED led;
void setup() {
 pinMode(Pin1,OUTPUT);
 pinMode(Pin2,OUTPUT);
 pinMode(Pin3,OUTPUT);
 digitalWrite(Pin1,LOW);
 digitalWrite(Pin2,LOW);
 digitalWrite(Pin3,LOW);
}
void loop() {
 led.on(Pin1);
 delay(2);
 led.on(Pin2);
 delay(2);
 led.on(Pin3);
 delay(2);
}

.h file

#ifndef LED_h
#define LED_h
class LED{
public:
 void on(int);
 void off(int);
};
#endif

.cpp file

#include <stdio.h>
#include <Arduino.h>
#include "LED.h" 
void LED::on(int PIN){
 digitalWrite(PIN,HIGH);
}
void LED::off(int PIN){
 digitalWrite(PIN,LOW);
}

Arduino compiler picks the object declaration error:

LEDC:6: error: 'LED' does not name a type
LEDC.ino: In function 'void loop()':
LEDC:17: error: 'led' was not declared in this scope

How should I declare objects in Arduino then?

The way that I am putting the files in folders is like the attached image:

enter image description here

• Majenko: There is nothing syntactically wrong with your program - it compiles perfectly in UECIDE. My guess is it's something to do with the Arduino IDE. Which version of the IDE are you using? I know that recently they have made some changes to how the compilation works (or maybe doesn't work).
• Amin: It is Arduino 1.5.6
• AlwaysLearning: Your LED.cpp and LED.h files are in an LEDD subfolder. In your LEDC.ino file you should use #include "LEDD/LED.h"

Answer 1

That version of the IDE (it seems to change from version to version) differentiates between includes with <...> and includes with "...".

If you use <...> it only looks in the system and library areas. If you use "..." it also looks inside your sketch.

So in your main INO file change the LED include from:

#include <LED.h>

To:

#include "LED.h"

and it should compile.

• Amin: Still does not compile. Maybe the way that I am putting the files in folders is not right? See the image in main question.
• Majenko: I did it by adding two new tabs - LED.cpp and LED.h and pasting your code into them.

Answer 2

All you need to do is this in the (.ino)

#include <LED.h>
int Pin1 = 13;
int Pin2 = 12;
int Pin3 = 11;
LED led1;
LED led2;
LED led3;
void setup() {
 pinMode(Pin1,OUTPUT);
 pinMode(Pin2,OUTPUT);
 pinMode(Pin3,OUTPUT);
 digitalWrite(Pin1,LOW);
 digitalWrite(Pin2,LOW);
 digitalWrite(Pin3,LOW);
}
void loop() {
 led1.on(Pin1);
 delay(2);
 led2.on(Pin2);
 delay(2);
 led3.on(Pin3);
 delay(2);
}