//This example code shows how to switch a LED on/off in Visual C++.
//We use two variables N and L explained below.

//I am assuming you have some knowledge in C++. Instruction to connect the LED is given in the Tutorial.







#include <iostream.h>  //The most important include to display data on screen.
#include <conio.h>     //Include for outp and inp functions for the printer port.
#include <windows.h>   //For _sleep functions for our time delay.

#define addr 0x3BC     //IMPORTANT: Normaly 378 is the most common address, 
                       //if not then insert your address instead of 378

int main()
{
    int freq; //Variable for time delay.
    int L; //Variable for counts of Blinking LED.
    
    
    cout<<"\t\t XheavenlyX WELCOMES YOU!!! \n\n";         //How can I forget this ^_^
    
    cout<<"How many times to blink?? Enter 0 to exit: ";  //Ask user how many times to blink the LED
    cin>>L;                                               //And exit if zero is entered.  
    
    
    if (L==0)
    {
        cout<<endl<<"Exiting application..."<<endl;             //Code to exit if L = 0. 
        for (int i=0;i<=5;i++) {_sleep(500);}                   //A lame pause before exit!
        exit(0);
    }

    cout<<"Frequency (in mS): ";                          //Ask user to enter the frequency at which the LED will blink.
    cin>>freq;                                              //Store that value in freq.
    
//Bottom code is the Juice! This will blink your LED the number of times you put in L.
//The speed of blinks will depend on freq. As an example if you entered 500milliseconds. The LED
//will blink twice every second since 500ms is half of 1000ms (1000millisecondss = 1sec)

    for (int i=1;i<=L;i++)        //The loop. L times to blink.
    {
    _outp(addr,1);             //Output is high in the first 'Data bit' of port(*), i.e Pin number 2 where you have connected the LED.
    _sleep(freq);               //freq mS delay between the high and low of LED.
    _outp(addr,0);             //Output is low now
    _sleep(freq);               //Pause again between the high,
    }
    return 0;                   //main returns nothing to you. ^_^
}                               // For an indepth look at 


//(*)NOTE: There are some simple calculations to turn on/off the other PINs on the printer port.

//links
// http://msdn2.microsoft.com/en-us/library/733szwah.aspx _outp, _inp etc.

//This example code shows how to switch a LED on/off in Visual C++.
//We use two variables N and L explained below.


#include <iostream.h>  //The most important include to display data on screen.
#include <conio.h>     //Include for outp and inp functions for the printer port.
#include <windows.h>   //For _sleep functions for our time delay.

#define addr 0x3BC     //IMPORTANT: Normaly 378 is the most common address, 
                       //if not then insert your address instead of 378

int main()
{
    int freq;   //Variable for time delay.
    int L;      //Variable for counts of Blinking LED.
    int wait;   //variable for time to wait before starting blinking.
    int length; //Variable for time the LED should remain lit


    
    L=30;         //Blink 30 times 
    wait=1200000; //Wait 20 minutes before starting to blink
    freq=20000;   //Time to wait between blinks, (in ms)
    length=500;   //Time to leave the LED on
    
//Bottom code is the Juice! This will blink your LED the number of times you put in L.
//The speed of blinks will depend on freq. As an example if you entered 500 milliseconds. The LED
//will blink twice every second since 500ms is half of 1000ms (1000millisecondss = 1sec)

_sleep(wait);

    for (int i=1;i<=L;i++)        //The loop. L times to blink.
    {
    _outp(addr,1);             //Output is high in the first 'Data bit' of port(*), i.e Pin number 2 where you have connected the LED.
    _sleep(length);            //Length mS delay between the high and low of LED.
    _outp(addr,0);             //Output is low now
    _sleep(freq);              //Pause again between the high,
    }
    return 0;                  //main returns nothing to you. ^_^
}


//(*)NOTE: There are some simple calculations to turn on/off the other PINs on the printer port.

//links
// http://msdn2.microsoft.com/en-us/library/733szwah.aspx _outp, _inp etc.