counting the seconds i press one button

Using Arduino Programming Questions
#1

Is it possible to use the

’
else if(keypad_value < 800)
return ‘S’;
’ button in two different ways,
if i hold the button for 5 seconds it returns an ‘Q’
in this way.

char ReadKeypad()
{

keypad_value = analogRead(keypad_pin);

if(keypad_value < 100)
return ‘R’;
else if(keypad_value < 200)
return ‘U’;
else if(keypad_value < 400)
return ‘D’;
else if(keypad_value < 600)
return ‘L’;
else if(keypad_value < 800)
return ‘S’;
else
return ‘N’;

}

#2

Yes; record the time the switch becomes pressed.
If five seconds has eleapsed, and the button is still pressed, send the alternate letter.

#3

char resetbutton=3000;
char count=0;

{

keypad_value = analogRead(keypad_pin);

if(keypad_value < 100)
return ‘R’;
else if(keypad_value < 200)
return ‘U’;
else if(keypad_value < 400)
return ‘D’;
else if(keypad_value < 600)
return ‘L’;
else if(keypad_value < 800)
return ‘S’;
while (keypad_value < 800) count+=1;
if (count>=resetbutton)
return ‘Q’;
else
return ‘N’;
Serial.println(count);

}

this what i have now, what can i do to make it work?

#4

you could try like this, though most would opt for non-blocking methods:

char resetbutton=3000;
char count=0;

{
  keypad_value = analogRead(keypad_pin);
 
  if(keypad_value < 100)
    return 'R';
  else if(keypad_value < 200)
    return 'U';
  else if(keypad_value < 400)
    return 'D';
  else if(keypad_value < 600)
    return 'L';
  else if(keypad_value < 800)
    uint32_t startPress = millis();
    while(keypad_value < 800 && keypad_value > 600)
    {
      keypad_value = analogRead(keypad_pin);
    }
    if(millis() - startPress < 1000UL)
    {
      return 'S';
    }
    else
    {
      return 'Q';
    }
  else 
    return 'N';
    Serial.println(count);
}
#5