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Code: Alles auswählen

#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <linux/joystick.h>
#include <stdlib.h>
#include <iostream>
#include <time.h>

#define JOY_DEV "/dev/input/js0"

int main()
{
        int joy_fd, *axis=NULL, num_of_axis=0, num_of_buttons=0, x;
        char *button=NULL, name_of_joystick[80];
        struct js_event js;

        if( ( joy_fd = open( JOY_DEV , O_RDONLY)) == -1 )
        {
                printf( "Couldn't open joystick\n" );
                return -1;
        }

        ioctl( joy_fd, JSIOCGAXES, &num_of_axis );
        ioctl( joy_fd, JSIOCGBUTTONS, &num_of_buttons );
        ioctl( joy_fd, JSIOCGNAME(80), &name_of_joystick );

        axis = (int *) calloc( num_of_axis, sizeof( int ) );
        button = (char *) calloc( num_of_buttons, sizeof( char ) );

        printf("Joystick detected: %s\n\t%d axis\n\t%d buttons\n\n"
                , name_of_joystick
                , num_of_axis
                , num_of_buttons );

        fcntl( joy_fd, F_SETFL, O_NONBLOCK );	/* use non-blocking mode */
        int before = 0;
        int ts = time(0)+100;
        int i = 0;
        while( ts > time(0) ) 	/* infinite loop */
        {
            i++;
                        /* read the joystick state */
                read(joy_fd, &js, sizeof(struct js_event));

                if(js.type == JS_EVENT_AXIS && js.number == 3 && js.value != before)
                {
                   std::cout << js.value << std::endl;
                   before = js.value;
               }
        }
        std::cout << i/100 << std::endl;
        close( joy_fd );	/* too bad we never get here */
        return 0;
}

Code: Alles auswählen

#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <linux/joystick.h>
#include <stdlib.h>
#include <iostream>
#include <time.h>

#define JOY_DEV "/dev/input/js0"

int main()
{
        int joy_fd, *axis=NULL, num_of_axis=0, num_of_buttons=0, x;
        char *button=NULL, name_of_joystick[80];
        struct js_event js;

        if( ( joy_fd = open( JOY_DEV , O_RDONLY)) == -1 )
        {
                printf( "Couldn't open joystick\n" );
                return -1;
        }

        ioctl( joy_fd, JSIOCGAXES, &num_of_axis );
        ioctl( joy_fd, JSIOCGBUTTONS, &num_of_buttons );
        ioctl( joy_fd, JSIOCGNAME(80), &name_of_joystick );

        axis = (int *) calloc( num_of_axis, sizeof( int ) );
        button = (char *) calloc( num_of_buttons, sizeof( char ) );

        printf("Joystick detected: %s\n\t%d axis\n\t%d buttons\n\n"
                , name_of_joystick
                , num_of_axis
                , num_of_buttons );

        //fcntl( joy_fd, F_SETFL, O_NONBLOCK );	/* use non-blocking mode */
        //int before = 0;
        //int ts = time(0)+100;
        //int i = 0;
        while( 1 ) 	/* infinite loop */
        {
            //i++;
                        /* read the joystick state */
                read(joy_fd, &js, sizeof(struct js_event));

                if(js.type == JS_EVENT_AXIS && js.number == 3)
                {
                   std::cout << js.value << std::endl;
                   //before = js.value;
               }
        }
        //std::cout << i/100 << std::endl;
        close( joy_fd );	/* too bad we never get here */
        return 0;
}

Code: Alles auswählen

#include <stdio.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <linux/joystick.h>
#include "joystick.h"

Joystick::Joystick(char dir[])
{
    if( ( this->fd = open( dir , O_RDONLY)) == -1 )
    {
        printf("ERROR (Joystick Constructor): Joystick was not found!");
    }

    ioctl( this->fd, JSIOCGAXES, &this->axes );
    ioctl( this->fd, JSIOCGBUTTONS, &this->buttons );
    ioctl( this->fd, JSIOCGNAME(80), &this->name );
    this->start();
}

void Joystick::run()
{
    while( 1 )
        {
            read(this->fd, &(this->js), sizeof(struct js_event));
            if(js.type == JS_EVENT_AXIS)
                this->onChangeAxe(js.number, js.value);
            else
                this->onChangeButton(js.number, js.value);
        }
}

void Joystick::getName(char* buffer[], int bufferSize)
{
    if(bufferSize > 80 || bufferSize < 0)
        bufferSize = 80;

    for(int i = 0; i < bufferSize; i++)
        *buffer[i] = this->name[i];
}

int Joystick::getNumAxes()
{
    return this->axes;
}

int Joystick::getNumButtons()
{
    return this->buttons;
}

Code: Alles auswählen

#ifndef JOYSTICK_H
#define JOYSTICK_H

#include <linux/joystick.h>
#include <QThread>

class Joystick : public QThread
{
private:
    virtual void onChangeAxe(int axe, int value);
    virtual void onChangeButton(int btt, int value);
    int axes;
    int buttons;
    char name[80];
    struct js_event js;
    int fd;
public:
    Joystick(char dir[]);
    void run();
    int getNumAxes();
    int getNumButtons();
    void getName(char* buffer[], int bufferSize);
};

#endif // JOYSTICK_H

Code: Alles auswählen

#include <iostream>

#include "joystick.h"

using namespace std;

void Joystick::onChangeAxe(int axe, int value)
{
    cout << "Axe: " << axe << " - " << value << endl;
}

void Joystick::onChangeButton(int button, int value)
{
    cout << "Button: " << button << " - " << value << endl;
}

int main()
{
    Joystick js("/dev/input/js0");
    while(js.isRunning())
        sleep(1000);
}