RNG90 serial output - Arduino Nano code

// Arduino nano ATmega328P (old bootloader)
//  I2C  A4 and A5
//  switches on pins 10 and 9
#include <Wire.h>

unsigned char randomBytes[32];
boolean status =false;
char flip=0; 

void printBytes(char sw) {    
   if (sw == 1) {
      for (int i=0; i <32; i++) {
          randomBytes[i] = randomBytes[i] / 43 + 1;
          Serial.print(randomBytes[i]);
          Serial.print(",");
     }
   } else if (sw == 2) {
     for (int i=0; i <32; i++) {
          Serial.print(randomBytes[i], HEX);
          Serial.print(",");
     }
   } else if (sw == 3) {
     for (int i=0; i <32; i++) {
         Serial.print(randomBytes[i],BIN);
         Serial.print(",");
     }
   } else {
     for (int i=0; i <32; i++) {
          Serial.print(randomBytes[i]);
          Serial.print(",");
     }
  }
  Serial.println();
}

void setup() {

  String text="decimal...";
  
  pinMode(10, INPUT_PULLUP);
  pinMode(9, INPUT_PULLUP);

  // flip == 0 32rnd 0-255
  if (digitalRead(10) == 0) flip += 1; // 1 1-6    
  if (digitalRead(9) == 0)  flip +=2; //  2 hex 3 binary 
  
   
  Wire.begin(0x40);             // Initialize I2C communication
  
  for (int i=0; i< 32; i++) {
    randomBytes[i] = 0;
  }
  Wire.setClock(400000);

  Serial.begin(9600);       // Start serial communication for debugging
  Serial.println();
  if (flip == 3) text = "binary...";
  else if (flip == 2) text = "hexadecimal...";
  else if (flip == 1) text = "dice...";
  Serial.print("Reading ");
  Serial.println(text);
  delay(2000);
}

void loop() {

  Wire.beginTransmission(0x40); // Start communication with RNG90
  if (status) {
    Wire.write(0x40); // i2c address
  }
  Wire.write(0x03); // word address value
  Wire.write(0x1b);  // count (N+1) = 27
  Wire.write(0x16);  // Request the random number register
  Wire.write(0x00);  // 1st parameter
  Wire.write(0x00);  // 2nd parameter
  Wire.write(0x00);  
  for (int k = 0; k < 20; k++) {
   Wire.write(0x00);  // 20 data bytes
  }
  Wire.write(0x7d); // crc
  Wire.write(0xe0);
  Wire.endTransmission();
 
  Wire.requestFrom(0x40, 1);    // Request 32 bytes (32-bites random number)
  int i = 0;
  while (Wire.available()) {
      randomBytes[i] = Wire.read();
      i++;
  } 
  Wire.requestFrom(0x40, 32);    // Request 32 bytes (32-bites random number)
  i = 0;
  while (Wire.available()) {
      randomBytes[i] = Wire.read();
      i++;
  }   
  if (status) {
     printBytes(flip); 
     status = false;
  } else {
    status = true;
  }
  delay(500);  // Wait 1/2 second before reading the next number
}