| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <stdint.h> |
| #include <fcntl.h> |
| #include <sys/ioctl.h> |
| //#include <linux/input.h> // this does not compile |
| #include <errno.h> |
| #include <unistd.h> |
| |
| |
| // from <linux/input.h> |
| |
| struct input_event { |
| struct timeval time; |
| uint16_t type; |
| uint16_t code; |
| int32_t value; |
| }; |
| |
| #define EVIOCGVERSION _IOR('E', 0x01, int) /* get driver version */ |
| #define EVIOCGID _IOR('E', 0x02, struct input_id) /* get device ID */ |
| #define EVIOCGKEYCODE _IOR('E', 0x04, int[2]) /* get keycode */ |
| #define EVIOCSKEYCODE _IOW('E', 0x04, int[2]) /* set keycode */ |
| |
| #define EVIOCGNAME(len) _IOC(_IOC_READ, 'E', 0x06, len) /* get device name */ |
| #define EVIOCGPHYS(len) _IOC(_IOC_READ, 'E', 0x07, len) /* get physical location */ |
| #define EVIOCGUNIQ(len) _IOC(_IOC_READ, 'E', 0x08, len) /* get unique identifier */ |
| |
| #define EVIOCGKEY(len) _IOC(_IOC_READ, 'E', 0x18, len) /* get global keystate */ |
| #define EVIOCGLED(len) _IOC(_IOC_READ, 'E', 0x19, len) /* get all LEDs */ |
| #define EVIOCGSND(len) _IOC(_IOC_READ, 'E', 0x1a, len) /* get all sounds status */ |
| #define EVIOCGSW(len) _IOC(_IOC_READ, 'E', 0x1b, len) /* get all switch states */ |
| |
| #define EVIOCGBIT(ev,len) _IOC(_IOC_READ, 'E', 0x20 + ev, len) /* get event bits */ |
| #define EVIOCGABS(abs) _IOR('E', 0x40 + abs, struct input_absinfo) /* get abs value/limits */ |
| #define EVIOCSABS(abs) _IOW('E', 0xc0 + abs, struct input_absinfo) /* set abs value/limits */ |
| |
| #define EVIOCSFF _IOC(_IOC_WRITE, 'E', 0x80, sizeof(struct ff_effect)) /* send a force effect to a force feedback device */ |
| #define EVIOCRMFF _IOW('E', 0x81, int) /* Erase a force effect */ |
| #define EVIOCGEFFECTS _IOR('E', 0x84, int) /* Report number of effects playable at the same time */ |
| |
| #define EVIOCGRAB _IOW('E', 0x90, int) /* Grab/Release device */ |
| |
| // end <linux/input.h> |
| |
| |
| |
| int sendevent_main(int argc, char *argv[]) |
| { |
| int i; |
| int fd; |
| int ret; |
| int version; |
| struct input_event event; |
| |
| if(argc != 5) { |
| fprintf(stderr, "use: %s device type code value\n", argv[0]); |
| return 1; |
| } |
| |
| fd = open(argv[1], O_RDWR); |
| if(fd < 0) { |
| fprintf(stderr, "could not open %s, %s\n", argv[optind], strerror(errno)); |
| return 1; |
| } |
| if (ioctl(fd, EVIOCGVERSION, &version)) { |
| fprintf(stderr, "could not get driver version for %s, %s\n", argv[optind], strerror(errno)); |
| return 1; |
| } |
| memset(&event, 0, sizeof(event)); |
| event.type = atoi(argv[2]); |
| event.code = atoi(argv[3]); |
| event.value = atoi(argv[4]); |
| ret = write(fd, &event, sizeof(event)); |
| if(ret < sizeof(event)) { |
| fprintf(stderr, "write event failed, %s\n", strerror(errno)); |
| return -1; |
| } |
| return 0; |
| } |