Toggle on off help

Using Arduino Project Guidance
1 
byte digitOne[10]= {0x80, 0xF2, 0x48, 0x60, 0x32, 0x24, 0x04, 0xF0, 0x00, 0x30};
// a=1 b=2 c=3 d=4 e=5 f=6 g=7

int tensdigit;  
int unitdigit;
int counter=0;

void setup(){
  DDRD |= B11111110;
  DDRB |= B00000110;
  PORTD = 0x00;
  PORTB = 0x00;
}

void loop(){
  if(digitalRead(11) == 1){
  counter++;
    if(counter==100) 
     counter=0;
    delay(500);
  }

  tensdigit = counter / 10;  

  unitdigit = counter % 10;

  PORTB |= B00000100;
  PORTB &= B11111101;
  number(tensdigit);
  delay(50);

  PORTB |= B00000010;
  PORTB &= B11111011;
  number(unitdigit);
  delay(50);
}

void number(int number){
  PORTD = digitOne[number];
}

asdasfawgfa
asdasfawgfa831×622 85.3 KB

How can i add a toggle on off button to this? i tried a lot but it didn't work. I just want to counter go up only 1 times after i press it. And it wont keep going up while im holding it down

2

See the StateChangeDetection example in the IDE

3

It looks like you are using your button on Arduino Pin 12 which is PB4 on PORT B. You must configure PB4 pin mode (DDRB) as INPUT (or INPUT_PULLUP) using a "mask" on PINB. You are using PORTx and masking bits in your code... here is a chart showing PINx also...

DDRxn  PORTxn  state
  0       0    INPUT
  0       1    INPUT_PULLUP
  1       0    OUTPUT LOW
  1       1    OUTPUT HIGH

1920×1080 313 KB

1 Like
4

Why not just use the pinMode() function ?

5

Original sketch is using bit masking.

6

I know, but I don't see the point of doing that instead of pinMode() in setup()

7

See if this little sketch helps with toggling and debouncing button input.

void setup()
{
  Serial.begin(9600);
  pinMode(LED_BUILTIN,OUTPUT);
  pinMode(11,INPUT);
}

void loop()
{
  static byte counter = 0;
  static bool this11 = false,
              last11 = false;
              
  this11 = digitalRead(11);
  if(this11 != last11)
  {
    last11 = this11;
    delay(50); // debounce time, 50ms
    if(digitalRead(11) == this11 && this11) //pin 11 is HIGH
      {
        digitalWrite(LED_BUILTIN,!digitalRead(LED_BUILTIN));
        if(++counter >= 100) // counter rollover
        {
          counter = 0; 
        }
        Serial.println(counter);
      }
  }
}
8

Practice binary mathmagic. I understand your meaning, knowing the IDE will do better bitmath than I will. It is akin to ham with cw... why? other than enjoying "Hello, World!" in ham.

9

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