detekcia-nabeznej-hrany

#include <stdio.h> //g++ -o scanner_vstupu vstupy-vystupy.cpp -m32 -std=c++11 -I /usr/include/i386-linux-gnu/ -L . -lico300 -pthread
#include <unistd.h>
#include <cstdint>
#include <thread>
#include <mutex>  // for securing shared variable
#include <iostream>
#include <iomanip>
#include "boost/date_time/posix_time/posix_time.hpp"

extern "C" {
    #include "libico300.h"
}

using namespace std;
using namespace boost::posix_time;

void wait(int milli_seconds) {
    this_thread::sleep_for(chrono::milliseconds(milli_seconds));
}

std::mutex m_mutex;     // var for securing controlling access to endflag var
bool endflag = false;

void threadf(int cas) {
    int a = 0;

    // Var moved outside while due to minimising
    std::uint8_t stav;                //preda referenci stav jednotlivych bitu

    while (true)
    {
        wait(cas);

        //std::uint8_t stav;                //preda referenci stav jednotlivych bitu

        ICO300_get_DI(&stav);                //ziska stav DI pinů

        if (stav != a)
        {
            cout << " PULS " << " " << " hexadecimalni cislo: " << hex << " " << (int) stav << " dekadicke cislo: "
                 << dec << (int) stav << endl;
        }
        else
        {
            cout << " MEZERA " << " " << " hexadecimalni cislo: " << hex << " " << (int) stav << " dekadicke cislo: "
                 << dec << (int) stav << endl;
        }

        a = stav;

/*
    for(int i =0; i < 8; ++i){          //Daviduv optimalizacni algoritmus
      cout << (int)(stav & 1);
      stav >>= 1;
 }

*/

        {
            std::lock_guard<std::mutex> lck(m_mutex);   // entering critical section
            if (endflag)
                break;
        }
    }
}

struct bits {
    unsigned bit0 : 1;
    unsigned bit1 : 1;
    unsigned bit2 : 1;
    unsigned bit3 : 1;
    unsigned bit4 : 1;
    unsigned bit5 : 1;
    unsigned bit6 : 1;
    unsigned bit7 : 1;

};

union u {
    unsigned char status;
    bits b;
};

struct time {
    boost::posix_time::ptime start_time, end_time;
    int posledni_hodnota;

} times[8];

void delka_impulsu(int CAS) {

    u STAV, ps;

    ps.status = 0;

    while (true)
    {
        ptime current_time = microsec_clock::local_time();

        ICO300_get_DI(&STAV.status);

        if (STAV.b.bit0 != ps.b.bit0)
        {
            if (STAV.b.bit0 == 1)
                times[0].start_time = current_time;
            else
                times[0].end_time = current_time;
        }
        wait(CAS);
    }
}


int main() {
    char c;
    ICO300_set_DIO_mode(0xff);                        //Vsechny piny jsou vstupni
    int b;
    cout << "Zadejte cas v [ms]: " << endl;
    cin >> b;

    std::thread t{threadf, b};                            //Inicializace vlakna

    cout << "Pro odpojeni vlakna stisknete lib. klavesu od 'Q'" << endl;
    cin >> c;

    if (c != 'Q')
    {
        std::lock_guard<std::mutex> lck(m_mutex);   // entering critical section
        endflag = true;
    }

    t.join();

    delka_impulsu(b);

    ptime t1 = times[0].start_time;
    ptime t2 = times[0].end_time;
    time_duration diff = t1 - t2;

    cout << "Delka pulsu je: " << diff << endl;

    return 0;
}