Using a joystick and usbhost shield to control some relays

[fakersyndrome]

Hello, for my project im trying to read the data from my USB joystick (buttonpresses) to power some relays. this is the first time i try something like this, some how i cant seem to use the Hexadecimal data from my structure in my IF statement, any tips?

(if i press a button on the joystick, i can see in the serial monitor on point a, 20 being printed. i want to use this hexadecimal number in an IF statement to power a pin)

#include <usbhid.h>
#include <hiduniversal.h>
#include <usbhub.h>

// Satisfy the IDE, which needs to see the include statment in the ino too.
#ifdef dobogusinclude
#include <spi4teensy3.h>
#endif
#include <SPI.h>


/////////////////////////////////////////////////////////////

struct GamePadEventData
{
  uint8_t	  f;                                                      //  https://playground.arduino.cc/Code/Struct/
  uint8_t		c;                                                      
  uint8_t 	a;
  uint8_t	  b;
  uint8_t		d;
  uint8_t		e;
}

;


////////////////////////////////////////////////////////////////////////////////////////////////////


__attribute__((packed));

class JoystickEvents
{
public:
	virtual void OnGamePadChanged(const GamePadEventData *evt);
};


//////////////////////////////////////////////////////////////////////////////////////////////////////



#define RPT_GAMEPAD_LEN	sizeof(GamePadEventData)

class JoystickReportParser : public HIDReportParser
{
	JoystickEvents		*joyEvents;

  uint8_t oldPad[RPT_GAMEPAD_LEN];

public:
	JoystickReportParser(JoystickEvents *evt);

	virtual void Parse(USBHID *hid, bool is_rpt_id, uint8_t len, uint8_t *buf);
};


JoystickReportParser::JoystickReportParser(JoystickEvents *evt) :
	joyEvents(evt)
{}

void JoystickReportParser::Parse(USBHID *hid, bool is_rpt_id, uint8_t len, uint8_t *buf)
{
	// Checking if there are changes in report since the method was last called
  bool match = (sizeof(oldPad) == len) && (memcmp(oldPad, buf, len) == 0);

   //Calling Game Pad event handler
	if (!match && joyEvents) {
		joyEvents->OnGamePadChanged((const GamePadEventData*)buf);
   memcpy(oldPad, buf, len);
	}
}

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////


void JoystickEvents::OnGamePadChanged(const GamePadEventData *evt)
{
	Serial.print("A: ");
	PrintHex<uint8_t>(evt->a, 0x80);
  ////////////////////////
	Serial.print(" B: ");
	PrintHex<uint8_t>(evt->b, 0x80);
  /////////////////////////////
	Serial.print(" C: ");
	PrintHex<uint8_t>(evt->c, 0x80);
  //////////////////////////
	Serial.print(" D: ");
	PrintHex<uint8_t>(evt->d, 0x80);
  //////////////////////////////
  Serial.print(" E: ");
	PrintHex<uint8_t>(evt->e, 0x80);
  ////////////////////////////////////
  Serial.print(" F: ");
	PrintHex<uint8_t>(evt->f, 0x80);
  //////////////////////////////////////
	Serial.println();                                            
}

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////


USB                                             Usb;
USBHub                                          Hub(&Usb);
HIDUniversal                                    Hid(&Usb);
JoystickEvents                                  JoyEvents;
JoystickReportParser                            Joy(&JoyEvents);



/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

void setup()

{

  
  Serial.begin( 115200 );
  
    #if !defined(__MIPSEL__)
  
    while (!Serial);     // Wait for serial port to connect
    #endif                                
    Serial.println("Start");
 
    if (Usb.Init() == -1)
      Serial.println("OSC did not start.");
    delay( 200 );
    if (!Hid.SetReportParser(0, &Joy))
      ErrorMessage<uint8_t>(PSTR("SetReportParser"), 1  );


  pinMode(43, OUTPUT);                                          
  pinMode(45, OUTPUT);                                                  
  pinMode(49, OUTPUT);                                         
  pinMode(47, OUTPUT);                                          


      
}

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

void loop()

{
  
        Usb.Task();

    // Here is where im trying to use the data from the struct (in the top):
    
            //GamePadEventData
            // uint8_t   f;                                                     
            // uint8_t   c;                                                      
            // uint8_t   a;
            // uint8_t   b;
            // uint8_t   d;
            // uint8_t   e;
            
    // to use in a if function to power some pins, 


    // somehow i cant just do: 
    
    // if (GamePadEventData.a) == 20)
    // {
    //    digitalWrite(43, HIGH);
    //  }
  
    // any ideas? or tips?


}