#include <stdio.h>
#include <stdlib.h>

#include <linux/input.h>
#include <asm/fcntl.h>

int main(void)
{
    int ret;
    int fp    = 0;

    struct input_event    key_event;

    fp=open("/dev/input/event0", O_RDONLY);
    if(fp<0){
        printf("Error: cannot open ir keypad device.\n");
        return -1;
    }

    while(1){
        ret = read(fp, &key_event, sizeof(struct input_event));
        if(ret != sizeof(struct input_event)) {
            printf("read is error. \n");
            return -1;
        }

        switch(key_event.value) {
        case 0:
            printf("release %d.\n", key_event.code);
            break;

        case 1:
            printf("press %d.\n", key_event.code);
            break;

        default:
            printf("value is error.\n");
            break;
        }
    }

    close(fp);
    return 0;    
}