 
 //clear error buiffer
 void clean_errorbuffer(){
-  memeset(errorbuffer,0,sizeof(errorbuffer));
+  memset(errorbuffer,0,sizeof(errorbuffer));
 }
 
 //initialization of PinMode
 int init_pinMode(){
   pinMode(buttonPin,INPUT);
   pinMode(buttonPin1,INPUT);
+  pinMode(ledPin,OUTPUT);
   pinMode(ledPin,OUTPUT);
 
   return 0;  

const int buttonPin=2;     //Digital Pin 2. 
const int buttonPin1=3;    //Digital Pin 3. 
const int ledPin=4;        //Digital Pin 4.
const int potPin=A0;       //Analog Pin 0.

//Variables

    Serial.print("error: ");
    Serial.println(errorbuffer);
    clean_buffer(); 
    digitalWrite(ledPin1,LOW);
  }

  if(buttonState==HIGH){
    strcpy(errorbuffer,"error-1");
    digitalWrite(ledPin1,HIGH);
  }

  if(buttonState1==HIGH){
    clean_errorbuffer();
    digitalWrite(ledPin1,LOW);
  }
}

