LED.h

/** Simple On-board LED flashing program - written by Derek Molloy
*    simple OOP  struture for the Exploring BeagleBone book
*
*    This program uses all four LEDS and can be executed in three ways:
*         makeLEDs on
*         makeLEDs off
*         makeLEDs flash  (flash at time delay intervals)
*         makeLEDs status (get the trigger status)
*
* Written by Derek Molloy for the book "Exploring BeagleBone: Tools and
* Techniques for Building with Embedded Linux" by John Wiley & Sons, 2014
* ISBN 9781118935125. Please see the file README.md in the repository root
* directory for copyright and GNU GPLv3 license information.            */

#include<iostream>
#include<fstream>
#include<string>
#include<sstream>
using namespace std;

#define LED_PATH "/sys/class/leds/beaglebone:green:usr"

class LED{
   private:
      string path;
      int number;
      virtual void writeLED(string filename, string value);
      virtual void removeTrigger();
   public:
      LED(int number);
      virtual void turnOn();
      virtual void turnOff();
      virtual void flash(string delayms);
      virtual void outputState();
      virtual ~LED();
};