int main()
{
int rssi;
char name[248];
if ( 0 == devname( BLUETOOTH_DEVICE, name, 248 ) ) {
printf( "Unit = %s Devicename = %s\n", BLUETOOTH_DEVICE, name );
}
read_rssi( BLUETOOTH_DEVICE, &rssi );
printf( "Unit = %s RSSI = %d\n", BLUETOOTH_DEVICE, rssi );
return 0;
}
BOOL tal_channel_is_clear(void)
{
return (SInt16)read_rssi() < RSSI_CLR_LEVEL;
} // tal_channel_is_clear //
int
main(void)
{
switch(fork()) {
case -1:
die("fork\n");
break;
case 0:
dev_id = hci_devid(DEV_ID);
if (dev_id < 0) {
die("Invalid device\n");
} else {
initsignals();
close(STDIN_FILENO);
close(STDOUT_FILENO);
close(STDERR_FILENO);
Display *dpy = NULL;
int rssi, screen;
Bool help = True;
check_version(dev_id);
add_to_white_list(dev_id);
handle = connect_to_device(dev_id);
/* encryption(dev_id, handle); */
while (running) {
if (help) {
if (!(dpy = XOpenDisplay(0)))
die("ble: cannot open display");
/* Get the number of screens in display "dpy" and blank them all. */
nscreens = ScreenCount(dpy);
locks = malloc(sizeof(Lock *) * nscreens);
if (locks == NULL)
die("ble: malloc: %s", strerror(errno));
}
if (help) {
rssi = read_rssi(dev_id, handle);
if ((calculate_distance(rssi) >= 2.0) && (rssi <= -71 && rssi >= -75)) {
if (locks != NULL && help) {
for (screen = 0; screen < nscreens; screen++)
locks[screen] = lockscreen(dpy, screen);
XSync(dpy, False);
}
help = False;
}
}
sleep(1);
if (!help) {
rssi = read_rssi(dev_id, handle);
if ((calculate_distance(rssi) <= 2.0) && (rssi <= -30 && rssi >= -70)) {
for (screen = 0; screen < nscreens; screen++)
unlockscreen(dpy, locks[screen]);
if (locks != NULL || dpy != NULL) {
free(locks);
XCloseDisplay(dpy);
help = True;
}
}
}
}
disconnect_from_device(dev_id, handle);
}
default:
break;
}
return EXIT_SUCCESS;
}
