Press and hold a button for 2 seconds and it flashes

Projects Programming
4

@kyonoc
A: The following Circuit (Fig-1) and Flow Chart (Fig-2) describe the hardware and behavior of your project.

sw1led1A
Figure-1:

sw1led1Flow
Figure-2:

B: the following sketch demonstrates how the LED (connected at DPin-13, Fig-1) could be turned on when Button1 (connected at DPin-2, Fig-1) remains closed for 1-sec time. This is a "building block" with which you can add codes to realize other two functions.

#include <Debounce.h>
Debounce Button1(2);
byte LED = LED_BUILTIN;
bool flag = false;

void setup()
{
  Serial.begin(9600);
  pinMode(2, INPUT_PULLUP);
  pinMode(LED, OUTPUT);
  digitalWrite(LED, LOW);
}

void loop()
{
  chkButton1();
  timeDelay(1000);
  if (flag == false)
  {
    digitalWrite(LED, HIGH);
  }
  else
  {
    flag = false;
  }
}

void chkButton1()
{
  while (!Button1.read() != HIGH) {}
  while (!Button1.read() != LOW){}
}

void timeDelay(unsigned long t)
{
  unsigned long prMillis = millis();
  while (millis() - prMillis <= t)
  {
    if (!Button1.read() != LOW)
    {
      flag = true;
      break;
    }
  }
}

C: Please, clarify:
1. If Button1 remains closed for 1-sec, then LED will be turned on. Correct?

2. Now release the Button1 and close it again and if remains closed for 2-sec, then LED blinks for once. Correct? (What is the blinking interval? I mean on-period/off-period.)

3. Now release the Button1 and close it again and if remains closed for 3-sec, then LED will be turend off. Correct?

D: The following sketch performs the tasks of Step-C1 and Step-C2 above.

#include <Debounce.h>
Debounce Button1(2);
byte LED = LED_BUILTIN;
bool flag = false;
bool flag2 = false;
bool flag3 = false;

void setup()
{
  Serial.begin(9600);
  pinMode(2, INPUT_PULLUP);
  pinMode(LED, OUTPUT);
  digitalWrite(LED, LOW);
}

void loop()
{
  if (flag2 == false)
  {
    chkButton1();   //for Button1 close condition
    timeDelay(1000);
    if (flag == false) //button1 remained closed for 1-sec
    {
      digitalWrite(LED, HIGH);
      flag2 = true;  //next step to blink 
    }
    else
    {
      flag = false;
    }
  }
  else
  {
    chkButton1();
    timeDelay(2000);
    if(flag == false) //Button1 remained closed for 2-sec
    {
      digitalWrite(LED, LOW);
      delay(500);
      digitalWrite(LED, HIGH);
      delay(500);
      flag3 = true;  //next move LED is to be turned off
    }
    else
    {
      flag = false;
    }   
  }
}

void chkButton1()
{
  while (!Button1.read() != HIGH) {}
  while (!Button1.read() != LOW) {}
}

void timeDelay(unsigned long t)
{
  unsigned long prMillis = millis();
  while (millis() - prMillis <= t)
  {
    if (!Button1.read() != LOW)
    {
      flag = true;
      break;
    }
  }
}

E: Veteran programmers may guide us to transform the above non-object sketch into object oriented codes.