| 1 | /* |
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| 2 | sample by Eric Weiss eric@eric-weiss.de |
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| 3 | */ |
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| 4 | #include <stdio.h> |
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| 5 | #include <sys/time.h> |
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| 6 | #include <sys/types.h> |
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| 7 | #include <unistd.h> |
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| 8 | #include <sys/stat.h> |
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| 9 | #include <fcntl.h> |
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| 10 | #include <linux/input.h> |
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| 11 | int |
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| 12 | main(void) { |
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| 13 | fd_set rfds; |
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| 14 | struct timeval tv; |
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| 15 | int retval; |
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| 16 | struct input_event evt; |
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| 17 | struct input_event evt1; |
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| 18 | int file,file1; |
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| 19 | int a; |
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| 20 | int rep[2]; /* Repeat rate array (milliseconds) */ |
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| 21 | rep[0] = 1000; /* Delay before first repeat */ |
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| 22 | rep[1] = 250; /* Repeating delay */ |
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| 23 | int x,y; |
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| 24 | |
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| 25 | /* Watch stdin (fd 0) to see when it has input. */ |
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| 26 | file=open("/dev/input/event0",O_NONBLOCK +O_ASYNC+O_RDONLY); |
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| 27 | file1=open("/dev/input/touchscreen0",O_NONBLOCK +O_ASYNC+O_RDONLY); |
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| 28 | printf( "fds %i , %i \n",file,file1); |
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| 29 | |
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| 30 | /* Wait up to five seconds. */ |
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| 31 | while(1) |
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| 32 | { |
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| 33 | tv.tv_sec = 1; |
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| 34 | tv.tv_usec = 0; |
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| 35 | FD_ZERO(&rfds); |
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| 36 | FD_SET(file, &rfds); |
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| 37 | FD_SET(file1, &rfds); |
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| 38 | // if(ioctl(file1, EVIOCSREP, rep)) |
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| 39 | //{ |
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| 40 | //perror("evdev ioctl"); |
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| 41 | //} |
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| 42 | retval = select(5, &rfds, NULL, NULL, &tv); |
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| 43 | // printf("retval %i\n",retval); |
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| 44 | if( FD_ISSET(file, &rfds)) |
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| 45 | { |
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| 46 | read(file,&evt, sizeof(struct input_event)); |
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| 47 | printf("event: code %i val %i type %i ret %i\n",evt.code,evt.value,evt.type,retval); |
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| 48 | } |
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| 49 | if( FD_ISSET(file1, &rfds)) |
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| 50 | { |
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| 51 | read(file1,&evt1, sizeof(struct input_event)); |
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| 52 | if (( evt1.code==0 ) & (evt1.type==3 )) |
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| 53 | { |
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| 54 | x=(evt1.value-200)/300; |
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| 55 | } |
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| 56 | if (( evt1.code==1 ) & (evt1.type==3 )) |
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| 57 | { |
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| 58 | y=(evt1.value-200)/300; |
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| 59 | } |
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| 60 | // printf("event1: code %i value %i val %i ret%i\n", evt1.code,evt1.value,evt1.type,retval); |
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| 61 | printf ("X %i Y %i \n",x,y); |
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| 62 | } |
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| 63 | if ( evt.type == EV_KEY) |
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| 64 | { |
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| 65 | // printf ("%i %i %i\n",evt.type,evt.value,evt.code); |
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| 66 | } |
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| 67 | } |
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| 68 | |
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| 69 | /* Don't rely on the value of tv now! */ |
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| 70 | |
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| 71 | if (retval == -1) |
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| 72 | perror("select()"); |
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| 73 | else if (retval) |
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| 74 | printf("Data is available now.\n"); |
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| 75 | /* FD_ISSET(0, &rfds) will be true. */ |
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| 76 | else |
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| 77 | printf("No data within five seconds.\n"); |
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| 78 | return 0; |
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| 79 | } |
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