input_test.c

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/select.h>
#include <sys/time.h>
#include <errno.h>
#include <linux/input.h>
int main(void)
{
int buttons_fd;
int key_value,i=0,count;
struct input_event ev_key;
buttons_fd = open("/dev/input/event1", O_RDWR);
if (buttons_fd < 0)
{
perror("open device buttons");
exit(1);
}
for (;;)
{
count = read(buttons_fd,&ev_key,sizeof(struct input_event));
for(i=0; i<(int)count/sizeof(struct input_event); i++)
if(EV_KEY==ev_key.type)
printf("type:%d,code:%d,value:%d\n", ev_key.type,ev_key.code-1,ev_key.value);
if(EV_SYN==ev_key.type)
printf("syn event\n\n");
}
close(buttons_fd);
return 0;
}