How to carry out functions in a sequential manner

Hi Gerry,

Yes - no problem! It's probably most efficient to think of it like:

• Send command 1
  
• When ack received, send command 2
  
• When ack received ....
  
  

So you might want something like this:

var ser = Serial1;
var commands = [];
var allSent = true;

function sendCommand(cmd) {
 if (allSent) { 
   // if everything was sent, start again
   Serial.write(cmd);
   allSent = false;
 } else {
  // otherwise we're sending - just push the new command onto the end
  commands.push(cmd);
 } 
}

ser.on('data', function(d) {
  for (var i in d)
    if (d[i]=="\x06") {
      if (commands.length) { 
        // send command off the start of the list
        Serial.write(commands.shift());
      } else {
        // signal we're done
        allSent = true;
      }
    }
});

Then you just call sendCommand with each command, and they get queued up.

I guess you might want some kind of timeout in there as well though?