/* SevSegShift Counter Example
 
 Copyright 2020 Dean Reading,
 Copyright 2020 Jens Breidenstein
 
 This example demonstrates a very simple use of the SevSegShift library with a 4
 digit display. It displays a counter that counts up, showing deci-seconds.
 https://github.com/bridystone/SevSegShift/tree/ShiftRegister/examples/SevSegShiftOne_Counter
 */

#include "SevSegShift.h"

#define SHIFT_PIN_SHCP 15
#define SHIFT_PIN_STCP 18
#define SHIFT_PIN_DS   23
//unsigned long startTime = millis();
//unsigned long stopTime = millis();
//unsigned long millisElapsed;
//unsigned long stoppedTime = 0;
unsigned long runningTime = 0;
unsigned long pressTime = 0;
unsigned long timeNow = 0;
unsigned long timeLast;
bool running = false;
bool stateChange = false;
int debounceTime = -100; // in milliseconds


/* Instantiate a seven segment controller object with:
  - segment pins controlled via 1 shift register and 
  - digit pins connected to the Arduino directly
  */
SevSegShift sevsegshift(
                  SHIFT_PIN_DS, 
                  SHIFT_PIN_SHCP, 
                  SHIFT_PIN_STCP, 
                  1, /* number of shift registers there is only 1 Shiftregister 
                        used for all Segments (digits are on Controller)
                        default value = 2 (see SevSegShift example)
                        */
                  true /* Digits are connected to Arduino directly 
                          default value = false (see SevSegShift example)
                        */
                );

void setup() {
  byte numDigits = 4;
  byte digitPins[] = {4, 19, 21, 22}; // These are the PINS of the ** Arduino **
  byte segmentPins[] = {0, 2, 4, 6, 7, 1, 3, 5}; // these are the PINs of the ** Shift register **
  bool resistorsOnSegments = false; // 'false' means resistors are on digit pins
  byte hardwareConfig = COMMON_CATHODE; // See README.md for options
  bool updateWithDelays = false; // Default 'false' is Recommended
  bool leadingZeros = false; // Use 'true' if you'd like to keep the leading zeros
  bool disableDecPoint = false; // Use 'true' if your decimal point doesn't exist or isn't connected
  
  sevsegshift.begin(hardwareConfig, numDigits, digitPins, segmentPins, resistorsOnSegments,
  updateWithDelays, leadingZeros, disableDecPoint);
  sevsegshift.setBrightness(90);
  pinMode(2, INPUT_PULLUP);
  //Serial.begin(115200);
}

void loop() {
  timeLast = timeNow;
  timeNow = millis();
  if ( ( pressTime - timeNow ) < debounceTime) {
    if ( digitalRead(13) == LOW ) // ( pressTime - timeNow ) < debounceTime ) {
    {
      stateChange = true;
      //Serial.println("stateChange");
      if ( running == true ) {
        running = false ;
      } else {
        running = true ; 
      }
      pressTime = timeNow;
    } else {
      stateChange = false;
    }
  }
  if ( running == true )
  {
    runningTime += ( timeNow - timeLast );
  } 
  
  if ( runningTime >= 100000 ) {
    runningTime = 0;
  }
  
  sevsegshift.setNumber((runningTime / 10), 2);
  sevsegshift.refreshDisplay(); // Must run repeatedly
  //Serial.println(pressTime);
  delay(1);
}

/// END ///