use IO::Async::Loop;
.....
our $loop = IO::Async::Loop->new;

$loop->add( IO::Async::Timer::Periodic->new(
   # This will call the main operational code of Muda:
   interval => 1,
   notifier_name => 'MAIN',
   on_tick => \&mainMudaTick 
)->start );
.....
$loop->run;