#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <wiringPi.h>

int impulsow;

void Delay();
void int_impuls(void) 
{
   impulsow++;
   if(impulsow%10 == 0)
    {
     printf ("The current state of the counter : %d\r", impulsow);
     fflush(0);
    }
}

/* S T A R T */
void main (argc, argv)
     int argc;
     char *argv[];
{

if (wiringPiSetup() == -1)
  {
        printf("wiringPi-Error\n");
    exit(1);
  }
    pinMode(29, OUTPUT);
    digitalWrite(29,LOW);
    pinMode(28, INPUT);
//    pullUpDnControl (28, PUD_UP) ;
//    wiringPiISR (28, INT_EDGE_BOTH, &int_impuls);
    wiringPiISR (28, INT_EDGE_FALLING, &int_impuls);
   printf("\nStart.\n");
// generate pulses
   int n;
   for(n=0;n<atoi(argv[1]);n++)
    { 
      digitalWrite(29,HIGH);
      Delay(10000);   // 10 ms pulse
      digitalWrite(29,LOW);
      Delay(10000);   // 10 ms space
    }
   printf ("\n\nCounted %d pulses\n\n", impulsow);
}

void Delay(int microsec)
{

 struct timespec tim3;
 tim3.tv_sec = 0;
 tim3.tv_nsec = microsec * 1000;
     while(nanosleep(&tim3,&tim3)==-1)
          continue;
}