Very hacky listen to the wireless doorbell

doorbell.ino

int i, good, k, j, incoming;
int inPin = 3;
int led = 13;
int steps = 8;
int on = 0;
byte data_in;

void setup()
{
    //attachInterrupt(1,data_incoming,RISING);
    pinMode(inPin, INPUT);
    pinMode(led, OUTPUT);
    Serial.begin(9600); // Debugging only
    Serial.println("setup");

}
void loop()
{
  int buttonState = digitalRead(inPin);
  if (buttonState == HIGH) {
    // start monitoring the incoming signal
    handle_incoming();
    
  }
   
}

void handle_incoming() {
  int start = 1;
  int count = 0;
  int last = 0;
  
  //digitalWrite(led, HIGH);
  k = 0;
  Serial.println("\t handle_incoming");
  
  // listen for 'steps' bytes of data
  for (j=0; j< steps; i++) {
    
    // store as byte
    for (i=0; i<8; i++) {
      if (start) {
        // just entered the function
        Serial.print(HIGH);
        bitWrite(data_in, i, HIGH);
        start = 0;
        continue;
        
      }
      
      int buttonState = digitalRead(inPin);
      //Serial.print(buttonState);

      bitWrite(data_in, i, buttonState);
      Serial.print(buttonState);
      
      // end of byte
      if (i == 7) {
        if (int(data_in) > 0) {
         //Serial.print(data_in);
         count++; 
         
        } else {
          // empty byte
          k++; 
        }
        
        last = data_in;
        
        
        Serial.print("\tcount: ");
        Serial.print(count);
        
        Serial.println(" ");
         // Empty the byte
         data_in = 0;
         
        // assume lots of data together is the button 
        if (count == 30) {
          if (on) {
            digitalWrite(led, LOW);
            on = 0;
          } else {
            digitalWrite(led, HIGH);
            on = 1;
          }
        }
         
      }
      
      //delay(100);
      // to hear the unknown source use a very quick delay
      delayMicroseconds(20);
    }
    
    
    
    
    if (k < steps) {
      j = 0;
      
    } else {
      // listen no more
      break; 
      
    }
    
  }
  
  Serial.println("\t\t finished_incoming");
  //digitalWrite(led, LOW);
  incoming = 0; 
}