File content as of revision 4:bafb7f483e93:

#ifndef GAMEPAD_H
#define GAMEPAD_H

#include "mbed.h"

#define TOL 0.1f
#define RAD2DEG 57.2957795131f

enum Direction {
    CENTRE,  // 0
    N,       // 1
    NE,      // 2
    E,       // 3
    SE,      // 4
    S,       // 5
    SW,      // 6
    W,       // 7
    NW      // 8
};

struct Vector2D {
    float x;
    float y;
};

struct Polar {
    float mag;
    float angle;
};

class Gamepad
{

public:

    Gamepad();
    ~Gamepad();

    void init();
    void leds_on();
    void leds_off();
    void fade_leds(float val);

    float read_pot();
    void tone(float frequency, float duration);

    bool a_pressed();
    bool b_pressed();
    bool x_pressed();
    bool y_pressed();
    bool l_pressed();
    bool r_pressed();
    bool back_pressed();
    bool start_pressed();

    bool joystick_pressed();
    float get_mag();
    float get_angle();
    Direction get_direction();    // N,NE,E,SE etc.


private:

    PwmOut *led_1;
    PwmOut *led_2;
    PwmOut *led_3;
    PwmOut *led_4;
    PwmOut *led_5;
    PwmOut *led_6;

    InterruptIn *button_A;
    InterruptIn *button_B;
    InterruptIn *button_X;
    InterruptIn *button_Y;
    InterruptIn *button_back;
    InterruptIn *button_start;
    InterruptIn *button_L;
    InterruptIn *button_R;
    InterruptIn *button_joystick;

    AnalogIn *vert;
    AnalogIn *horiz;

    PwmOut *buzzer;
    AnalogIn *pot;

    Timeout *timeout;

    void init_buttons();
    void tone_off();

    void a_isr();
    void b_isr();
    void x_isr();
    void y_isr();
    void l_isr();
    void r_isr();
    void back_isr();
    void start_isr();
    void joy_isr();
    
    Vector2D get_coord();         // cartesian co-ordinates x,y
    Vector2D get_mapped_coord();  // x,y mapped to circle
    Polar get_polar();            // mag and angle in struct form

    bool a_flag,b_flag,x_flag,y_flag,l_flag,r_flag,back_flag,start_flag,joy_flag;
    
      // centred x,y values    
    float _x0;
    float _y0;



};

#endif