ibit with arduino

#include <Adafruit_Microbit.h>
#include <Wire.h>
#define Addr 0x48
const int sw_A=5;
const int sw_B=11;
Adafruit_Microbit_Matrix microbit;
#ifndef _ibit_h
#define _ibit_h

#define DIR1 13
#define PWM1 14
#define DIR2 15
#define PWM2 16

void fd2(int speed1,int speed2){
  pinMode(DIR1,OUTPUT);pinMode(DIR2,OUTPUT);
  pinMode(PWM1,OUTPUT);pinMode(PWM2,OUTPUT);
  digitalWrite(DIR1,1);analogWrite(PWM1,speed1);
  digitalWrite(DIR2,0);analogWrite(PWM2,speed2);
}
void bk2(int speed1,int speed2){
  pinMode(DIR1,OUTPUT);pinMode(DIR2,OUTPUT);
  pinMode(PWM1,OUTPUT);pinMode(PWM2,OUTPUT);
  digitalWrite(DIR1,0);analogWrite(PWM1,speed1);
  digitalWrite(DIR2,1);analogWrite(PWM2,speed2);
}
void sl(int speeds){
  pinMode(DIR1,OUTPUT);pinMode(DIR2,OUTPUT);
  pinMode(PWM1,OUTPUT);pinMode(PWM2,OUTPUT);
  digitalWrite(DIR1,0);analogWrite(PWM1,speeds);
  digitalWrite(DIR2,0);analogWrite(PWM2,speeds);
}
void sr(int speeds){
  pinMode(DIR1,OUTPUT);pinMode(DIR2,OUTPUT);
  pinMode(PWM1,OUTPUT);pinMode(PWM2,OUTPUT);
  digitalWrite(DIR1,1);analogWrite(PWM1,speeds);
  digitalWrite(DIR2,1);analogWrite(PWM2,speeds);
}

void ao(){
  pinMode(PWM1,OUTPUT);pinMode(PWM2,OUTPUT);
  analogWrite(PWM1,0);
  analogWrite(PWM2,0);
}
int ADC(int ch){
  int AD[8]={132,196,148,212,164,228,180,244};
  byte dat[2];
  Wire.beginTransmission(Addr);
  Wire.write(AD[ch]);
  Wire.endTransmission();delayMicroseconds(500);
  Wire.requestFrom(Addr,2);
  if(2 <= Wire.available()){
    dat[0]=Wire.read();
    dat[1]=Wire.read();
  }
  return ((dat[0]&0x0F)<<8)|dat[1];
}
int ADC4b(int ch){
  int AD[8]={132,196,148,212,164,228,180,244};
  byte dat[2];
  Wire.beginTransmission(Addr);
  Wire.write(AD[ch]);
  Wire.endTransmission(); delayMicroseconds(500);
  Wire.requestFrom(Addr,1);
  if(Wire.available()){
    dat[0]=Wire.read();
  }
  delay(1);
  return (dat[0]&0x0F);
}
#endif

 void setup() {
  pinMode(sw_A,INPUT);
  Serial.begin(115200);
  Wire.setClock(400000);
  Wire.begin();
  microbit.begin();
  delay(300);
}
void loop(){
  Serial.print(ADC(0));
  Serial.print(" ");
  Serial.print(ADC(1));
  Serial.print(" ");
  Serial.print(ADC(2));
  Serial.print(" ");
  Serial.print(ADC(3));
  Serial.print(" ");
  Serial.print(ADC(4));
  Serial.print(" ");
  Serial.print(ADC(5));
  Serial.print(" ");
  Serial.print(ADC(6));
  Serial.print(" ");
  Serial.print(ADC(7));
  Serial.print(" ");
  Serial.print(ADC4b(0));
  Serial.print(" ");
  Serial.print(ADC4b(1));
  Serial.print(" ");
  Serial.print(ADC4b(2));
  Serial.print(" ");
  Serial.print(ADC4b(3));
  Serial.print(" ");
  Serial.print(ADC4b(4));
  Serial.print(" ");
  Serial.print(ADC4b(5));
  Serial.print(" ");
  Serial.print(ADC4b(6));
  Serial.print(" ");
  Serial.println(ADC4b(7));
}