Arduino Leonardo как адаптер SegaMegaDrive Gamepad->USB

#include "SMDjoystick.h"
SMDjoystick::SMDjoystick(int upPin,int downPin,int leftPin,int rightPin,int aPin,int selectPin,int startPin):up(upPin),down(downPin),left(leftPin),right(rightPin),a(aPin),select(selectPin),start(startPin){
        pinMode(up,INPUT);
        pinMode(down,INPUT);
        pinMode(left,INPUT);
        pinMode(right,INPUT);
        pinMode(a,INPUT);
        pinMode(start,INPUT);
        pinMode(select,OUTPUT);
}
uint16_t SMDjoystick::read(){
        uint16_t data=0;
        digitalWrite(select,LOW);
        data+=!digitalRead(a)<<SMD_A;
        data+=!digitalRead(start)<<SMD_START;
        data+=!digitalRead(up)<<SMD_UP;
        data+=!digitalRead(down)<<SMD_DOWN;
        delayMicroseconds(1200);
        digitalWrite(select,HIGH);
        data+=!digitalRead(left)<<SMD_LEFT;
        data+=!digitalRead(right)<<SMD_RIGHT;
        data+=!digitalRead(a)<<SMD_B;
        data+=!digitalRead(start)<<SMD_C;
        digitalWrite(select,LOW);
        delayMicroseconds(1200);
        digitalWrite(select,HIGH);
        digitalWrite(select,LOW);
        digitalWrite(select,HIGH);
        data+=!digitalRead(up)<<SMD_Z;
        data+=!digitalRead(down)<<SMD_Y;
        data+=!digitalRead(left)<<SMD_X;
        data+=!digitalRead(right)<<SMD_MODE;
        digitalWrite(select,LOW);
        digitalWrite(select,HIGH);
        return data;
}
bool SMDjoystick::read(int key){
        bool val=false;
        switch(key){
        case SMD_UP:
                val=!digitalRead(up);
                break;
        case SMD_DOWN:
                val=!digitalRead(down);
                break;
        case SMD_LEFT:
                digitalWrite(select,HIGH);
                val=!digitalRead(left);
                break;
        case SMD_RIGHT:
                digitalWrite(select,HIGH);
                val=!digitalRead(right);
                break;
        case SMD_START:
                digitalWrite(select,LOW);
                val=!digitalRead(start);
                break;
        case SMD_A:
                digitalWrite(select,LOW);
                val=!digitalRead(a);
                break;
        case SMD_B:
                digitalWrite(select,HIGH);
                val=!digitalRead(a);
                break;
        case SMD_C:
                digitalWrite(select,HIGH);
                val=!digitalRead(start);
                break;
        case SMD_X:
                digitalWrite(select,LOW);
                delayMicroseconds(1200);
                digitalWrite(select,HIGH);
                digitalWrite(select,LOW);
                delayMicroseconds(1200);
                digitalWrite(select,HIGH);
                digitalWrite(select,LOW);
                digitalWrite(select,HIGH);
                val=!digitalRead(left);
                digitalWrite(select,LOW);
                digitalWrite(select,HIGH);
                break;
        case SMD_Y:
                digitalWrite(select,LOW);
                delayMicroseconds(1200);
                digitalWrite(select,HIGH);
                digitalWrite(select,LOW);
                delayMicroseconds(1200);
                digitalWrite(select,HIGH);
                digitalWrite(select,LOW);
                digitalWrite(select,HIGH);
                val=!digitalRead(down);
                digitalWrite(select,LOW);
                digitalWrite(select,HIGH);
                break;
        case SMD_Z:
                digitalWrite(select,LOW);
                delayMicroseconds(1200);
                digitalWrite(select,HIGH);
                digitalWrite(select,LOW);
                delayMicroseconds(1200);
                digitalWrite(select,HIGH);
                digitalWrite(select,LOW);
                digitalWrite(select,HIGH);
                val=!digitalRead(up);
                digitalWrite(select,LOW);
                digitalWrite(select,HIGH);
                break;
        case SMD_MODE:
                digitalWrite(select,LOW);
                delayMicroseconds(1200);
                digitalWrite(select,HIGH);
                digitalWrite(select,LOW);
                delayMicroseconds(1200);
                digitalWrite(select,HIGH);
                digitalWrite(select,LOW);
                digitalWrite(select,HIGH);
                val=!digitalRead(right);
                digitalWrite(select,LOW);
                digitalWrite(select,HIGH);
                break;
        }
        return val;
}

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