A simple counter for a tm1637 display.

displayCounter.ino

// .---------------------------------------------------------.
// | Spike Snell - 2024                                      |
// | A simple counter for a tm1637 display.                  |
// |                                                         |
// | - The count is reset after a long press of the button.  |
// `---------------------------------------------------------'

// Import the tm1637Display library from - https://github.com/avishorp/TM1637
#include <TM1637Display.h>

// Define the clock pin
#define CLK 2

// Define the data in-out pin
#define DIO 3

// Define the button pin
#define BTN 4

// Define the long press duration
#define LONG_PRESS 100

// Initialize count to 0
int count = 0 ;

// Initialize firstPress boolean
int firstPress = true;

// Initialize held count to 0
int heldCount = 0;

// Set up the display with the clock and data in-out pin
TM1637Display display( CLK, DIO );

// Set up the display and input pin
void setup() {

    // Set the input pin to be the button pin
    pinMode( BTN, INPUT );

    // Set the display brightness
    display.setBrightness( 0x03 );

}

// Loop through and check for button presses
void loop() {

   // If the button is being pressed down
   if ( digitalRead(4) == 1 ) {

       // Increment the held count
       heldCount++;

       // If this is the first time we are checking to see if the button is pressed down 
       if ( firstPress == true ) {

           // Increment the current count
           count++;

           // Set firstPress flag to false
           firstPress = false;
           
       }    
       
    }


    // Else if the button is not being pressed down
    else {

        // Set firstPress back to true
        firstPress = true;

        // Set held count back to 0
        heldCount = 0;
         
    }

    // If the held count is more than LONG_PRESS then set the count back to 0
    if ( heldCount > LONG_PRESS ) {

        // Set count back to zero
        count = 0;
    
    }

    // Show the current count on the display
    display.showNumberDec( count, false );
    
}