cat event事件

struct input_event {
    struct timeval time;
    __u16 type;
    __u16 code;
    __s32 value;
};

struct input_event buff;
int fd;
int read_nu;

fd = open("/dev/input/event0", O_RDWR);
if (fd < 0){
perror("can not open device led");
exit(1);
}


while(1){

while(read(fd,&buff,sizeof(struct input_event))==0);
printf("type:%d\n code:%d\n,value:%d\n",buff.type,buff.code,buff.value);

}

close(fd);