Arduino Uno and de0nano problem

Projects Programming
13

and using now using the Serial and not the SoftwareSerial

#include <stdlib.h>
#include <SoftwareSerial.h>

int speakerPin = 9;
int tones[] = {261, 277, 294, 311, 330, 349, 370, 392, 415, 440};
//            mid C  C#   D    D#   E    F    F#   G    G#   A

int income = 0;


void setup()
{
  Serial.begin(9600);
  while (! Serial); // Wait untilSerial is ready - Leonardo
}

void loop()
{
  recieveInputPassword();
}

void recieveInputPassword()
{
 if (Serial.available() > 8)
  {
    for(int i = 0; i < 8; i++)
    {
      income = Serial.read();
    
    //mySerial.print("I received: ");
      Serial.println(income, DEC);
      
      if(income == 52)
      {
         giveSignal();
      }
    }
    
    Serial.println("SPACE");
  }
}

void giveSignal()
{
  int i;
  for(i = 0; i<3; i++)
  {
    tone(speakerPin, tones[0]);
    delay(1000);
    noTone(speakerPin);
  }
}

output

0
0
0
0
0
0
0
0
SPACE
0
252
0
0
0
0
0
0
SPACE
0
0
0
0
0
0
0
0
SPACE
0
0
0
0
0
0
0
0
SPACE
0
0
0
0
0
0
0
0
SPACE

all 3 times the output can go on forever