mirror of https://github.com/aredn/aredn.git
158 lines
3.3 KiB
Perl
Executable File
158 lines
3.3 KiB
Perl
Executable File
#!/usr/bin/perl
|
|
# GPL V2 or greater
|
|
# Used to control the 4 led's on Ubiquti for device aiming.
|
|
# Written by Conrad Lara KG6JEI
|
|
|
|
|
|
|
|
sub aimmode_printusage{
|
|
print "USAGE:\n";
|
|
print "$0 SSID\n";
|
|
die;
|
|
}
|
|
|
|
|
|
# SSID NAME
|
|
if ( $ARGV[0] ) {
|
|
$SSIDName= lc $ARGV[0];
|
|
}
|
|
else
|
|
{
|
|
$SSIDName= lc "AREDN-20-v3";
|
|
}
|
|
|
|
#dbm values for each RSSI trigger level
|
|
$RSSI_4=-65;
|
|
$RSSI_3=-73;
|
|
$RSSI_2=-80;
|
|
$RSSI_1=-94;
|
|
|
|
# LED Set Wrapper
|
|
sub SetLED {
|
|
($fh, $state ) = @_ ;
|
|
print $fh $state ;
|
|
binmode($fh);
|
|
}
|
|
|
|
|
|
# Reset LED's to baseline
|
|
sub init_led_triggers {
|
|
|
|
open ( LINK4_trigger,'>/sys/class/leds/ubnt:green:link4/trigger');
|
|
open ( LINK3_trigger,'>/sys/class/leds/ubnt:green:link3/trigger');
|
|
open ( LINK2_trigger,'>/sys/class/leds/ubnt:orange:link2/tigger');
|
|
open ( LINK1_trigger,'>/sys/class/leds/ubnt:red:link1/trigger');
|
|
|
|
print LINK4_trigger "none";
|
|
print LINK3_trigger "none";
|
|
print LINK2_trigger "none";
|
|
print LINK1_trigger "none";
|
|
|
|
close ( LINK4_trigger);
|
|
close ( LINK3_trigger);
|
|
close ( LINK2_trigger);
|
|
close ( LINK1_trigger);
|
|
|
|
}
|
|
|
|
sub aimmode_start {
|
|
|
|
# Prep the system
|
|
system('/etc/init.d/linkled stop');
|
|
system('/etc/init.d/olsrd stop');
|
|
system('/sbin/ifdown wifi');
|
|
system('/sbin/ifdown wifi_mon');
|
|
system('/usr/sbin/iw phy phy0 interface add mon0 type monitor');
|
|
system('/usr/sbin/iw dev mon0 set channel 1');
|
|
system('/sbin/ifconfig mon0 up');
|
|
#Open up the files we will need to run with
|
|
# Run tcpdump in buffered (-l) mode so each line returns with a newline
|
|
open ( $TCPDUMP,"/usr/sbin/tcpdump -l -i mon0 \"link[0] == 0x80\" |");
|
|
open ( $LINK4_led,'>/sys/class/leds/ubnt:green:link4/brightness');
|
|
open ( $LINK3_led,'>/sys/class/leds/ubnt:green:link3/brightness');
|
|
open ( $LINK2_led,'>/sys/class/leds/ubnt:orange:link2/brightness');
|
|
open ( $LINK1_led,'>/sys/class/leds/ubnt:red:link1/brightness');
|
|
|
|
|
|
}
|
|
sub aimmode_shutdown {
|
|
|
|
#Turn off all LED's except LINk4
|
|
|
|
SetLED ($LINK4_led, 1);
|
|
SetLED ($LINK3_led, 0);
|
|
SetLED ($LINK2_led, 0);
|
|
SetLED ($LINK1_led, 0);
|
|
|
|
close ($TCPDUMP);
|
|
close ($LINK4_led);
|
|
close ($LINK3_led);
|
|
close ($LINK2_led);
|
|
close ($LINK1_led);
|
|
# Brining up wifi is a bit more complicated than just ifconfig up so we let `ifup` handle it ... takes a bit to finish so sleep 10s
|
|
system('ifup wifi');
|
|
system('ifup wifi_mon');
|
|
print "Please wait while we restart the services";
|
|
sleep 10;
|
|
system('/etc/init.d/olsrd start');
|
|
system('/etc/init.d/linkled start');
|
|
}
|
|
|
|
init_led_triggers();
|
|
|
|
$SIG{INT} = sub { aimmode_shutdown(); exit; };
|
|
|
|
|
|
aimmode_start();
|
|
|
|
# Main while loop
|
|
while ( <$TCPDUMP> )
|
|
{
|
|
next unless /.* ([\d\-]+)dB.*Beacon \((.*)\)/;
|
|
next unless lc $2 eq $SSIDName ;
|
|
|
|
#Average the last value and this values in order to tame sudden spikes
|
|
$s=int(($1+$lastvalue)/2);
|
|
print "$s \n";
|
|
|
|
if ($s >= $RSSI_4 ) {
|
|
SetLED ($LINK4_led, 1);
|
|
}
|
|
else
|
|
{
|
|
SetLED ($LINK4_led, 0);
|
|
}
|
|
|
|
if ($s >= $RSSI_3 ) {
|
|
SetLED ($LINK3_led, 1);
|
|
}
|
|
else
|
|
{
|
|
SetLED ($LINK3_led, 0);
|
|
}
|
|
|
|
if ($s >= $RSSI_2 ) {
|
|
SetLED ($LINK2_led, 1);
|
|
}
|
|
else
|
|
{
|
|
SetLED ($LINK2_led, 0);
|
|
}
|
|
|
|
if ($s >= $RSSI_1 ) {
|
|
SetLED ($LINK1_led, 1);
|
|
}
|
|
else
|
|
{
|
|
SetLED ($LINK1_led, 0);
|
|
}
|
|
|
|
|
|
$lastvalue=$s;
|
|
|
|
}
|
|
|
|
# Normally the SIG{INT} handler will be done before here
|
|
# But in case the TCPDUMP dies out we want to reset the system
|
|
aimmode_shutdown();
|