use constant powerOn => 0;
use constant lightOn => 1;
{ my $status;
sub setStatus
{
  my $bit = shift;
  vec($status, $bit, 1) = 1;
}
sub resetStatus
{
  my $bit = shift;
  vec($status, $bit, 1) = 0;
}
sub getStatus
{
  my $bit = shift;
  vec($status, $bit, 1);
}

}