1 struct input_event {
2     struct timeval time;
3     __u16 type;
4     __u16 code;
5     __s32 value;
6 };

 1 /*
 2  * Event types
 3  */
 4
 5 #define EV_SYN            0x00
 6 #define EV_KEY            0x01
 7 #define EV_REL            0x02
 8 #define EV_ABS            0x03
 9 #define EV_MSC            0x04
10 #define EV_SW            0x05
11 #define EV_LED            0x11
12 #define EV_SND            0x12
13 #define EV_REP            0x14
14 #define EV_FF            0x15
15 #define EV_PWR            0x16
16 #define EV_FF_STATUS        0x17
17 #define EV_MAX            0x1f
18 #define EV_CNT            (EV_MAX+1)

 1 /*************************************************************************
 2     > File Name: testInput.c
 3     > Author: winfu
 4     > Mail: wenfuandyou@163.com
 5     > Created Time: Mon 30 May 2016 04:40:40 PM CST
 6  ************************************************************************/
 7
 8 #include<stdio.h>
 9 #include <time.h>
10 #include <stdlib.h>
11 #include <unistd.h>
12 #include <sys/types.h>
13 #include <sys/stat.h>
14 #include <fcntl.h>
15 #include <linux/input.h> //input_event,标准键值等
16 #include <stdbool.h>
17
18 #define DOWN 1
19 #define UP 0
20
21 int main(int argc, char *argv[])
22 {
23     int fd;
24     long int num = 0;
25     bool flagTime = false;
26     struct timeval tv_start,tv_end; // 记录实际触摸按下和抬起的时间
27
28     struct input_event inputV;
29     fd = open(argv[1], O_RDWR); //./testInput /dev/input/event4
30     if (fd < 0) {
31         printf("open event failed.\n");
32         return -1;
33     }
34
35     while(1) {
36
37         read(fd, &inputV, sizeof(inputV));
38
39
40    //     printf("\033[31m  type = %#x, code = %#x, value = %#x \033[0m \n",
41    //                        inputV.type, inputV.code, inputV.value);
42
43         //if (EV_ABS == inputV.type)  //读取按键内容
44         //{
45         //    printf("\033[1;32;40m  event=%s,value=%d \033[0m \r\n",
46         //                                 inputV.code == ABS_X ? "ABS_X":
47         //                                 inputV.code == ABS_Y ? "ABS_Y":
48         //                                 inputV.code == ABS_PRESSURE ? "ABS_PRESSURE" : "ABS_DISTANCE",inputV.value);
49         //}
50
51         if(inputV.type == EV_KEY && inputV.code == BTN_TOUCH && inputV.value == DOWN) //按下
52         {
53             flagTime = true;
54             tv_start =  inputV.time;
55         }
56         if(flagTime && inputV.type == EV_KEY && inputV.code == BTN_TOUCH && inputV.value == UP) //抬起
57         {
58             tv_end =  inputV.time;
59
60             printf("-------------------------> \e[0;31m %d times ,run time : %lf ms \033[0m <-------------------\n",num++
61                  ,    (tv_end.tv_sec - tv_start.tv_sec)*1000.0 /*将秒转换为毫秒*/
62                  +  (tv_end.tv_usec - tv_start.tv_usec)/1000.0 );/*将微妙转换为毫秒*/
63             flagTime = false;
64         }
65         num=num%50000;
66     }
67     close(fd);
68     return 0;
69 }