Error msg on my edited BlinkWithoutDelay program

Projects Programming
1

Hi there

I'm trying to teach myself the use of the state machine. I've been following a useful video on youtube. Seems like a key subject

I've tried to replicate his code at the end of the video with a some tweaks - the names of the LED's. But I'm running into trouble with an error code:

exit status 1
expected unqualified-id before numeric constant

Here's the code:

// constants
const int 12ledPin =  12;                           // the number of the LED pin
const int 13ledPin =  13;
const long 12interval = 2000;                              // interval at which to blink (milliseconds)
const long 13interval = 4000;



// Variables
int 12ledState = LOW;                               // ledState used to set the LED
int 13ledState = LOW;
unsigned long previous12Millis = 0;
unsigned long previous13Millis = 0;



void setup() {
  // set the digital pin as output:
  pinMode(12ledPin, OUTPUT);
  pinMode(13ledPin, OUTPUT);
  currentMillis = millis();
}



void loop() {

  currentMillis = millis();
  manage12led();
  manage13led();
}




void manage12led() {

  if (currentMillis - previous12Millis > 12interval) {
    previous12Millis = currentMillis;
    13ledState = (12ledState == HIGH) ? LOW : HIGH;
    digitalWrite(12ledPin, 12ledState);
  }
}

void manage13led() {

  if (currentMillis - previous13Millis > 13interval) {                    // compares current time with previous, references interval.  If interval is reached then ....
    previous13Millis = currentMillis;                                     // records time
    13ledState = (13ledState == HIGH) ? LOW : HIGH;                       // If state = HIGH, change to LOW. If not change to HIGH
    digitalWrite(13ledPin, 13ledState);                                   // tell 13LedPin to be the new state
  }
}

Hope you can help

2

Variable names cannot begin with numbers. http://www.c4learn.com/c-programming/c-variable-nameing-rules/

3

Ah brilliant, I'm one step closer to creating my first state machine:)