Ejecutando código uinput en la placa DM368

Question

Estoy usando la placa DM368 TI. Quiero enviar pulsaciones de teclas a gstplayer en ubuntu 10.10. Para ello utilicé la función uinput en código C. Mi código funciona correctamente en la consola pero no en el hardware. Incluso generé el archivo uinput.o en el tablero. Por favor da una sugerencia adecuada.

Aquí está mi código:

#include <string.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <linux/input.h>
#include <linux/uinput.h>
#include <stdio.h>
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
#include <errno.h>
/* Globals */
int uinp_fd;
struct uinput_user_dev uinp;       // uInput device structure
struct input_event event; // Input device structure
/* Setup the uinput device */
int setup_uinput_device()
{
    // Temporary variable
    int i=0;
    // Open the input device
    uinp_fd = open("/dev/uinput", O_WRONLY | O_NONBLOCK);
    if (uinp_fd<0)
    {
        printf("Unable to open /dev/uinput\n");
        //die("error: open");   
        return -1;
    }

    // Setup the uinput device
    if(ioctl(uinp_fd, UI_SET_EVBIT, EV_KEY)<0)
        printf("unable to write");
    if(ioctl(uinp_fd, UI_SET_EVBIT, EV_REL)<0)
        printf("unable to write");
    if(ioctl(uinp_fd, UI_SET_RELBIT, REL_X)<0)
        printf("unable to write");
    if(ioctl(uinp_fd, UI_SET_RELBIT, REL_Y)<0)
        printf("unable to write");
    for (i=0; i < 256; i++) {
        ioctl(uinp_fd, UI_SET_KEYBIT, i);
    }
    //ioctl(uinp_fd, UI_SET_KEYBIT, BTN_MOUSE);
    //ioctl(uinp_fd, UI_SET_KEYBIT, BTN_TOUCH);
    //ioctl(uinp_fd, UI_SET_KEYBIT, BTN_MOUSE);
    //ioctl(uinp_fd, UI_SET_KEYBIT, BTN_LEFT);
    //ioctl(uinp_fd, UI_SET_KEYBIT, BTN_MIDDLE);
    //ioctl(uinp_fd, UI_SET_KEYBIT, BTN_RIGHT);
    //ioctl(uinp_fd, UI_SET_KEYBIT, BTN_FORWARD);
    //ioctl(uinp_fd, UI_SET_KEYBIT, BTN_BACK);


    memset(&uinp,0,sizeof(uinp)); // Intialize the uInput device to NULL
    snprintf(uinp.name, UINPUT_MAX_NAME_SIZE, "uinput-sample");
    uinp.id.bustype = BUS_USB;
    uinp.id.vendor  = 0x1;
    uinp.id.product = 0x1;
    uinp.id.version = 1;

    /* Create input device into input sub-system */
    if(write(uinp_fd, &uinp, sizeof(uinp))< 0)
        printf("Unable to write UINPUT device.");


    if (ioctl(uinp_fd, UI_DEV_CREATE)< 0)
    {
        printf("Unable to create UINPUT device.");
        //die("error: ioctl");
        return -1;
    }
    return 1;

}
void send_click_events( )
{
    // Move pointer to (0,0) location
    memset(&event, 0, sizeof(event));
    gettimeofday(&event.time, NULL);
    event.type = EV_REL;
    event.code = REL_X;
    event.value = 100;
    write(uinp_fd, &event, sizeof(event));
    event.type = EV_REL;
    event.code = REL_Y;
    event.value = 100;
    write(uinp_fd, &event, sizeof(event));
    event.type = EV_SYN;
    event.code = SYN_REPORT;
    event.value = 0;
    write(uinp_fd, &event, sizeof(event));
    // Report BUTTON CLICK - PRESS event
    memset(&event, 0, sizeof(event));
    gettimeofday(&event.time, NULL);
    event.type = EV_KEY;
    event.code = BTN_LEFT;
    event.value = 1;
    write(uinp_fd, &event, sizeof(event));
    event.type = EV_SYN;
    event.code = SYN_REPORT;
    event.value = 0;
    write(uinp_fd, &event, sizeof(event));
    // Report BUTTON CLICK - RELEASE event
    memset(&event, 0, sizeof(event));
    gettimeofday(&event.time, NULL);
    event.type = EV_KEY;
    event.code = BTN_LEFT;
    event.value = 0;
    write(uinp_fd, &event, sizeof(event));
    event.type = EV_SYN;
    event.code = SYN_REPORT;
    event.value = 0;
    write(uinp_fd, &event, sizeof(event));
}
void send_a_button()
{
    // Report BUTTON CLICK - PRESS event
    memset(&event, 0, sizeof(event));
    gettimeofday(&event.time, NULL);
    event.type = EV_KEY;
    event.code = KEY_ENTER;
    event.value = 1;
    write(uinp_fd, &event, sizeof(event));
    event.type = EV_SYN;
    event.code = SYN_REPORT;
    event.value = 0;
    write(uinp_fd, &event, sizeof(event));
    // Report BUTTON CLICK - RELEASE event
    memset(&event, 0, sizeof(event));
    gettimeofday(&event.time, NULL);
    event.type = EV_KEY;
    event.code = KEY_ENTER;
    event.value = 0;
    write(uinp_fd, &event, sizeof(event));
    event.type = EV_SYN;
    event.code = SYN_REPORT;
    event.value = 0;
    write(uinp_fd, &event, sizeof(event));
}
/* This function will open the uInput device. Please make
   sure that you have inserted the uinput.ko into kernel. */
int main()
{
    // Return an error if device not found.
    if (setup_uinput_device() < 0)
    {
        printf("Unable to find uinput device\n");
        return -1;
    }
    sleep(1);

    send_a_button();           // Send a "A" key
    // send_click_events();       // Send mouse event
    /* Destroy the input device */
    ioctl(uinp_fd, UI_DEV_DESTROY);
    /* Close the UINPUT device */
    close(uinp_fd);
}