Why is this not tranfering? one int to another int?

Projects Programming
1

Hi all,
I'm sure ive done this before but cant work out why its not working.

The result it get is :

...
TOTAL: 83
LAST TOTAL :0
TOTAL: 86
LAST TOTAL :0
TOTAL: 89
LAST TOTAL :0
TOTAL: 90
LAST TOTAL :0
...

ie the total isnt getting moved to the last total variable..

// Arduino VW buggy controller v1.1

void setup(){
 pinMode(2,INPUT);
 pinMode(3,INPUT);
 pinMode(4,INPUT);
 pinMode(5,INPUT);
 pinMode(6,INPUT);
 pinMode(7,INPUT);
 pinMode(8,INPUT);
  
  Serial.begin(9600);       


}

void loop(){
 int total;
 int lasttotal;
 lasttotal=total; <<<<<<<<<<<<<<<<<<<<<<<<<<<<<< is this where my problem lies?
 total = totalcounter();

Serial.print("TOTAL: ");
Serial.println(total);
Serial.print("LAST TOTAL :");
Serial.println(lasttotal);
delay(1000);

}

int totalcounter(){
  int pins = 7;
  int i;
  int temptotal;
  int total;
  int currentpin;
  int currentval;
  total=0;
  for(i=0;i<pins;i++){
    currentpin = i+2;
    currentval = pow(2,i)+0.5;
    temptotal = countercheck(currentpin,currentval);
    total = temptotal + total;
  }
  return(total);
}

int countercheck(int cnt, int value){
  
  if(digitalRead(cnt)==0){
    return (0);
  }
  else if(digitalRead(cnt)==1){
    return (value);
  }
 
}

Thanks in advance :slight_smile:

2

You shouldn't use a local variable for that. Make it static or global.

3

you legend, im an idiot! lol
Too many hours sorting out the cuircuity last night lol

4 
void loop(){
 int total;
 int lasttotal;
 lasttotal=total; <<<<<<<<<<<<<<<<<<<<<<<<<<<<<< is this where my problem lies?

total is not initialized either ... // you might use setup() for that :wink: