55 lines
1.4 KiB
C++
55 lines
1.4 KiB
C++
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
#include <linux/input.h>
|
|
|
|
int read_tristate() {
|
|
int fd = open("/proc/tristatekey/tri_state", O_RDONLY);
|
|
char p[16];
|
|
int ret = read(fd, p, sizeof(p) - 1);
|
|
p[ret] = 0;
|
|
return atoi(p);
|
|
}
|
|
|
|
int main() {
|
|
int fd = -1;
|
|
for(int i=0; i<255; i++) {
|
|
char path[256];
|
|
snprintf(path, 256, "/dev/input/event%d", i);
|
|
fd = open(path, O_RDWR);
|
|
if(fd == -1) continue;
|
|
char name[256];
|
|
ioctl(fd, EVIOCGNAME(256), name);
|
|
printf("Got input name %s\n", name);
|
|
if(strcmp(name, "oplus,hall_tri_state_key") == 0) {
|
|
break;
|
|
}
|
|
close(fd);
|
|
fd = -1;
|
|
}
|
|
if(fd == -1) return 0;
|
|
|
|
ioctl(fd, EVIOCGRAB, 1);
|
|
|
|
struct input_event ev;
|
|
while(read(fd, &ev, sizeof(ev)) != 0) {
|
|
if(!(ev.code == 61 && ev.value == 0)) continue;
|
|
int state = read_tristate();
|
|
if(state == 1) {
|
|
}
|
|
printf("State %d\n", read_tristate());
|
|
if(state == 1) {
|
|
system("service call audio 32 i32 0 s16 android");
|
|
} else if(state == 2) {
|
|
system("service call audio 32 i32 1 s16 android");
|
|
} else if(state == 3) {
|
|
system("service call audio 32 i32 2 s16 android");
|
|
}
|
|
}
|
|
}
|