"ledOnOff" was not declared in this scope

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1

Hi, guys! I am new in all this arduino stuff. Help me!!!

I've tried upload a sketch to use a pushdown button, but something got wrong and a I got this erro: "ledOnOff" was not declared in this scope. I've used the code below. It was a exercise from this book:"Arduino in Action" by Martin Evans, Joshua Noble and Jordan Hochenbaum.

volatile int state = LOW;
int ledArray[] = {8,9,10,11,12};
int count = 0;
int timer = 75;
int pause = 500;
void setup(){
for (count=0;count<5;count++){
pinMode(ledArray[count], OUTPUT);
}
attachInterrupt(0,ledOnOff,RISING);
}
void loop(){
if(state){
for (count=0;count<5;count=++){
digitalWrite(ledArray[count], HIGH);
delay(timer);
}
delay(pause);
for (count=0;count<5;count=++){
digitalWrite(ledArray[count], LOW);
delay(timer);
}
delay(pause);
}
}
void ledOFF(){
static unsigned long lastMillis = 0;
unsigned long newMillis = millis();
if(newMillis - lastMillis < 50){
}
else{
state = !state;
lastMillis = newMillis;
}
}

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2

use </> code tags helps for readability, some spaces and empty lines too

volatile int state = LOW;

int ledArray[] = {8, 9, 10, 11, 12};

int count = 0;
int timer = 75;
int pause = 500;


void setup()
{
  for (count=0; count<5; count++)
  {
    pinMode(ledArray[count], OUTPUT);
  }
  attachInterrupt(0,ledOnOff,RISING);
}

void loop()
{
  if(state)
  {
    for (count=0; count<5; count=++)
    {
      digitalWrite(ledArray[count], HIGH);
      delay(timer);
    }
    delay(pause);

    for (count=0; count<5; count=++)
    {
      digitalWrite(ledArray[count], LOW);
      delay(timer);
    }
    delay(pause);
  }
}


void ledOnOff()
{
  static unsigned long lastMillis = 0;

  unsigned long newMillis = millis();

  if (newMillis - lastMillis > 50)
  {
    state = !state;
    lastMillis = newMillis;
  }
}

your function is called ledOFF instead of ledOnOff

does that help?