#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <time.h>
#include <wait.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <wiringPi.h>
#include <lcd.h>



#define WEWY 25

static int lcdHandle ;  
struct timespec tim;
char buf1[50];  

void wyswietl();
void Delay_ms(int microsec);




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

{

// check wiringPi setup
if (wiringPiSetup() == -1)
  {
	printf("wiringPi-Error\n");
    exit(1);
  }

pinMode (WEWY , INPUT) ;
pullUpDnControl(WEWY, PUD_UP);

lcdHandle = lcdInit (4, 20, 4, 10,11, 0,1,2,3,0,0,0,0) ;


int stan;
int licz;


while (TRUE)
  {
   stan=digitalRead(WEWY); 
   if (stan == 0)
    {
     for(licz=30;licz>0;licz--)
      {
       stan=digitalRead(WEWY);
       if(stan == 1) break;
       Delay_ms(200);
      }
     if (stan == 0)
      {
       system("killall pomiar");
       sleep(1);
       lcdClear(lcdHandle);
       wyswietl(1,1,"Zamykanie systemu");   
       system("shutdown -h now");
       exit(0);
      }
    }
   Delay_ms(200);
  }                             //od while(TRUE)  
}                               // od main

//*****************************************
void wyswietl(int x, int y, char* tresc)
{
  lcdPosition (lcdHandle, x, y) ; 
  strncpy(buf1, tresc, 20);
  lcdPuts (lcdHandle, buf1) ;
}

//*****************************************
void Delay_ms(int milisec)
{
 tim.tv_sec = 0;
 tim.tv_nsec = milisec * 1000000;
     while(nanosleep(&tim,&tim)==-1)
          continue;
}