GPS Recorder - track filename ? and potential issue

So to answer your question - what is wait() - it was a hack that I knew would one day need to be discussed. Its the bad bit of code below:

// quick hack
function wait(ms){
  var start = new Date().getTime();
  var end = start;
  while(end < start + ms) {
    end = new Date().getTime();
  }
}

What is really needed is a yield(ms) function that gracefully yields but comes back to the same thread in ms time.

So the question is how to code using timers something like this:

function setupPSMOO() {
  log_debug("setupGPS() PSMOO");
  UBX_CFG_RESET();
  wait(100);
  
  UBX_CFG_PM2(settings.update, settings.search);
  wait(20);
  
  UBX_CFG_RXM();
  wait(20);
  
  UBX_CFG_SAVE();
  wait(20);
}