Using Timer with a Button

[MickeyGentry]

I've posted some test code where a button press should output messages every second. When I load this and press the button, a bunch of messages come out immediately, and then they come out every second as expected. The longer I wait to press the button the more messages come out, as if they are piling up before the button press. I have tried timer.begin() and timer.beginNextPeriod() in void setup(), didn't make any difference. Thoughts?

Thanks!

#include <Control_Surface.h> // Include the Control Surface library
 
// Instantiate a MIDI over USB interface
USBMIDI_Interface midi;

Button clickerButton {12}; //Object from Control_Surface

// declare int array for 5 items
int ipresetSet[5];
int index;
Timer<millis> timer = 1000; // one second timer

void setup() {
  Control_Surface.begin(); // Initialize Control Surface
timer.beginNextPeriod()
  // Initialize button
  clickerButton.begin();

  // load array with test values
  ipresetSet[0] = 50;
  ipresetSet[1] = 60;
  ipresetSet[2] = 70;
  ipresetSet[3] = 80;
  ipresetSet[4] = 90;
}
 
void loop() {
  Control_Surface.loop(); // Update the Control Surface

  // check if button down
  if (clickerButton.update()){

    // output array value every second
    if (timer){
      // reset array index
      if(index > 4){
        index = 0;
      }
      
      // output array values
      Serial.print("Current preset index: ");
      Serial.print(index);
      Serial.print(" - preset value: ");
      Serial.println(ipresetSet[index]);
      
      // increment index
      ++index;
    }
  }
}

[MickeyGentry]

I rewrote this with non-library timer code and it works as expected. Thoughts?
Thanks.

#include <Control_Surface.h> // Include the Control Surface library
 
// Instantiate a MIDI over USB interface
USBMIDI_Interface midi;

Button clickerButton {12}; //Object from Control_Surface

// declare int array for 5 items
int ipresetSet[5];
int index;

unsigned long previousMillis = 0;  // will store last time
const long interval = 1000;  // interval at which to blink (milliseconds)

void setup() {
  Control_Surface.begin(); // Initialize Control Surface

  // Initialize button
  clickerButton.begin();

  // load array with test values
  ipresetSet[0] = 50;
  ipresetSet[1] = 60;
  ipresetSet[2] = 70;
  ipresetSet[3] = 80;
  ipresetSet[4] = 90;
}
 
void loop() {
  Control_Surface.loop(); // Update the Control Surface

  // get current millisecs
  unsigned long currentMillis = millis();

  // check if button down
  if (clickerButton.update()){

    // output array value every second
    // check time to send again
    if (currentMillis - previousMillis >= interval) {

      // save the last time 
      previousMillis = currentMillis;

      // reset array index
      if(index > 4){
        index = 0;
      }
      
      // output array values
      Serial.print("Current preset index: ");
      Serial.print(index);
      Serial.print(" - preset value: ");
      Serial.println(ipresetSet[index]);
      
      // increment index
      ++index;
    }
  }
  else {
    // restart index for every new button press
    index = 0;
  }
}