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Dependencies:   mbed

N5110/Gamepad/Gamepad.h@2:725c213b2396, 2019-03-20 (annotated)

Committer:
el17arm
Date:
Wed Mar 20 01:32:31 2019 +0000
Revision:
2:725c213b2396
Collision now detected though sprite does not react to collision yet

Who changed what in which revision?

UserRevisionLine numberNew contents of line
el17arm 2:725c213b2396 1 #ifndef GAMEPAD_H
el17arm 2:725c213b2396 2 #define GAMEPAD_H
el17arm 2:725c213b2396 3
el17arm 2:725c213b2396 4 #include <bitset>
el17arm 2:725c213b2396 5
el17arm 2:725c213b2396 6 // Forward declaration of the classes that we use from the mbed library
el17arm 2:725c213b2396 7 // This avoids the need for us to include the huge mbed.h header inside our
el17arm 2:725c213b2396 8 // own library API
el17arm 2:725c213b2396 9 namespace mbed
el17arm 2:725c213b2396 10 {
el17arm 2:725c213b2396 11 class AnalogIn;
el17arm 2:725c213b2396 12 class InterruptIn;
el17arm 2:725c213b2396 13 class PwmOut;
el17arm 2:725c213b2396 14 class Timeout;
el17arm 2:725c213b2396 15 }
el17arm 2:725c213b2396 16
el17arm 2:725c213b2396 17 #define TOL 0.1f
el17arm 2:725c213b2396 18 #define RAD2DEG 57.2957795131f
el17arm 2:725c213b2396 19
el17arm 2:725c213b2396 20 /** Enum for direction */
el17arm 2:725c213b2396 21 enum Direction {
el17arm 2:725c213b2396 22 CENTRE, /**< joystick centred */
el17arm 2:725c213b2396 23 N, /**< pushed North (0)*/
el17arm 2:725c213b2396 24 NE, /**< pushed North-East (45) */
el17arm 2:725c213b2396 25 E, /**< pushed East (90) */
el17arm 2:725c213b2396 26 SE, /**< pushed South-East (135) */
el17arm 2:725c213b2396 27 S, /**< pushed South (180) */
el17arm 2:725c213b2396 28 SW, /**< pushed South-West (225) */
el17arm 2:725c213b2396 29 W, /**< pushed West (270) */
el17arm 2:725c213b2396 30 NW /**< pushed North-West (315) */
el17arm 2:725c213b2396 31 };
el17arm 2:725c213b2396 32
el17arm 2:725c213b2396 33 /** Vector 2D struct */
el17arm 2:725c213b2396 34 struct Vector2D {
el17arm 2:725c213b2396 35 float x; /**< float for x value */
el17arm 2:725c213b2396 36 float y; /**< float for y value */
el17arm 2:725c213b2396 37 };
el17arm 2:725c213b2396 38
el17arm 2:725c213b2396 39 /** Polar coordinate struct */
el17arm 2:725c213b2396 40 struct Polar {
el17arm 2:725c213b2396 41 float mag; /**< float for magnitude */
el17arm 2:725c213b2396 42 float angle; /**< float for angle (in degrees) */
el17arm 2:725c213b2396 43 };
el17arm 2:725c213b2396 44
el17arm 2:725c213b2396 45 /** Gamepad Class
el17arm 2:725c213b2396 46 * @brief Library for interfacing with ELEC2645 Gamepad PCB, University of Leeds
el17arm 2:725c213b2396 47 * @author Dr Craig A. Evans
el17arm 2:725c213b2396 48 * @author Dr Alex Valavanis
el17arm 2:725c213b2396 49 */
el17arm 2:725c213b2396 50 class Gamepad
el17arm 2:725c213b2396 51 {
el17arm 2:725c213b2396 52 public:
el17arm 2:725c213b2396 53 /** Gamepad events
el17arm 2:725c213b2396 54 * @brief List of events that can be registered on the gamepad
el17arm 2:725c213b2396 55 */
el17arm 2:725c213b2396 56 enum GamepadEvent {
el17arm 2:725c213b2396 57 A_PRESSED, ///< Button A has been pressed
el17arm 2:725c213b2396 58 B_PRESSED, ///< Button B has been pressed
el17arm 2:725c213b2396 59 X_PRESSED, ///< Button X has been pressed
el17arm 2:725c213b2396 60 Y_PRESSED, ///< Button Y has been pressed
el17arm 2:725c213b2396 61 L_PRESSED, ///< Button L has been pressed
el17arm 2:725c213b2396 62 R_PRESSED, ///< Button R has been pressed
el17arm 2:725c213b2396 63 BACK_PRESSED, ///< Button "Back" has been pressed
el17arm 2:725c213b2396 64 START_PRESSED, ///< Button "Start" has been pressed
el17arm 2:725c213b2396 65 JOY_PRESSED, ///< Joystick button has been pressed
el17arm 2:725c213b2396 66 N_EVENTS ///< A dummy flag that marks the end of the list
el17arm 2:725c213b2396 67 };
el17arm 2:725c213b2396 68
el17arm 2:725c213b2396 69 private:
el17arm 2:725c213b2396 70 mbed::PwmOut *_led1;
el17arm 2:725c213b2396 71 mbed::PwmOut *_led2;
el17arm 2:725c213b2396 72 mbed::PwmOut *_led3;
el17arm 2:725c213b2396 73 mbed::PwmOut *_led4;
el17arm 2:725c213b2396 74 mbed::PwmOut *_led5;
el17arm 2:725c213b2396 75 mbed::PwmOut *_led6;
el17arm 2:725c213b2396 76
el17arm 2:725c213b2396 77 mbed::InterruptIn *_button_A;
el17arm 2:725c213b2396 78 mbed::InterruptIn *_button_B;
el17arm 2:725c213b2396 79 mbed::InterruptIn *_button_X;
el17arm 2:725c213b2396 80 mbed::InterruptIn *_button_Y;
el17arm 2:725c213b2396 81 mbed::InterruptIn *_button_L;
el17arm 2:725c213b2396 82 mbed::InterruptIn *_button_R;
el17arm 2:725c213b2396 83 mbed::InterruptIn *_button_back;
el17arm 2:725c213b2396 84 mbed::InterruptIn *_button_start;
el17arm 2:725c213b2396 85 mbed::InterruptIn *_button_joystick;
el17arm 2:725c213b2396 86
el17arm 2:725c213b2396 87 mbed::AnalogIn *_vert;
el17arm 2:725c213b2396 88 mbed::AnalogIn *_horiz;
el17arm 2:725c213b2396 89
el17arm 2:725c213b2396 90 mbed::PwmOut *_buzzer;
el17arm 2:725c213b2396 91 mbed::AnalogIn *_pot;
el17arm 2:725c213b2396 92
el17arm 2:725c213b2396 93 mbed::Timeout *_timeout;
el17arm 2:725c213b2396 94
el17arm 2:725c213b2396 95 std::bitset<N_EVENTS> _event_state; ///< A binary list of buttons that has been pressed
el17arm 2:725c213b2396 96
el17arm 2:725c213b2396 97 // centred x,y values
el17arm 2:725c213b2396 98 float _x0;
el17arm 2:725c213b2396 99 float _y0;
el17arm 2:725c213b2396 100
el17arm 2:725c213b2396 101 public:
el17arm 2:725c213b2396 102 /** Constructor */
el17arm 2:725c213b2396 103 Gamepad();
el17arm 2:725c213b2396 104
el17arm 2:725c213b2396 105 /** Destructor */
el17arm 2:725c213b2396 106 ~Gamepad();
el17arm 2:725c213b2396 107
el17arm 2:725c213b2396 108 /** Initialise all peripherals and configure interrupts */
el17arm 2:725c213b2396 109 void init();
el17arm 2:725c213b2396 110
el17arm 2:725c213b2396 111 /** Turn all LEDs on */
el17arm 2:725c213b2396 112 void leds_on();
el17arm 2:725c213b2396 113
el17arm 2:725c213b2396 114 /** Turn all LEDs off */
el17arm 2:725c213b2396 115 void leds_off();
el17arm 2:725c213b2396 116
el17arm 2:725c213b2396 117 /** Set all LEDs to duty-cycle
el17arm 2:725c213b2396 118 *@param value in range 0.0 to 1.0
el17arm 2:725c213b2396 119 */
el17arm 2:725c213b2396 120 void leds(float val) const;
el17arm 2:725c213b2396 121
el17arm 2:725c213b2396 122 /** Set LED to duty-cycle
el17arm 2:725c213b2396 123 *@param led number (0 to 5)
el17arm 2:725c213b2396 124 *@param value in range 0.0 to 1.0
el17arm 2:725c213b2396 125 */
el17arm 2:725c213b2396 126 void led(int n,float val) const;
el17arm 2:725c213b2396 127
el17arm 2:725c213b2396 128 /** Read potentiometer
el17arm 2:725c213b2396 129 *@returns potentiometer value in range 0.0 to 1.0
el17arm 2:725c213b2396 130 */
el17arm 2:725c213b2396 131 float read_pot() const;
el17arm 2:725c213b2396 132
el17arm 2:725c213b2396 133 /** Play tone on piezo
el17arm 2:725c213b2396 134 * @param frequency in Hz
el17arm 2:725c213b2396 135 * @param duration of tone in seconds
el17arm 2:725c213b2396 136 */
el17arm 2:725c213b2396 137 void tone(float frequency, float duration);
el17arm 2:725c213b2396 138
el17arm 2:725c213b2396 139 /**
el17arm 2:725c213b2396 140 * @brief Check whether an event flag has been set and clear it
el17arm 2:725c213b2396 141 * @param id[in] The ID of the event to test
el17arm 2:725c213b2396 142 * @return true if the event occurred
el17arm 2:725c213b2396 143 */
el17arm 2:725c213b2396 144 bool check_event(GamepadEvent const id);
el17arm 2:725c213b2396 145
el17arm 2:725c213b2396 146 /**
el17arm 2:725c213b2396 147 * @brief Get the raw binary event state
el17arm 2:725c213b2396 148 * @return The event state as a binary code
el17arm 2:725c213b2396 149 * @details The check_event() function is likely to be more useful than
el17arm 2:725c213b2396 150 * this, for testing whether a given event has occurred. It can be
el17arm 2:725c213b2396 151 * useful for debugging via the terminal, however, for example:
el17arm 2:725c213b2396 152 * @code
el17arm 2:725c213b2396 153 * std::cout << gamepad.get_raw_event_state() << std::endl;
el17arm 2:725c213b2396 154 * @endcode
el17arm 2:725c213b2396 155 */
el17arm 2:725c213b2396 156 inline std::bitset<N_EVENTS> get_raw_event_state() const {
el17arm 2:725c213b2396 157 return _event_state;
el17arm 2:725c213b2396 158 }
el17arm 2:725c213b2396 159
el17arm 2:725c213b2396 160 /** Get magnitude of joystick movement
el17arm 2:725c213b2396 161 * @returns value in range 0.0 to 1.0
el17arm 2:725c213b2396 162 */
el17arm 2:725c213b2396 163 float get_mag();
el17arm 2:725c213b2396 164
el17arm 2:725c213b2396 165 /** Get angle of joystick movement
el17arm 2:725c213b2396 166 * @returns value in range 0.0 to 359.9. 0.0 corresponds to N, 180.0 to S. -1.0 is central
el17arm 2:725c213b2396 167 */
el17arm 2:725c213b2396 168 float get_angle();
el17arm 2:725c213b2396 169
el17arm 2:725c213b2396 170 /** Gets joystick direction
el17arm 2:725c213b2396 171 * @returns an enum: CENTRE, N, NE, E, SE, S, SW, W, NW,
el17arm 2:725c213b2396 172 */
el17arm 2:725c213b2396 173 Direction get_direction(); // N,NE,E,SE etc.
el17arm 2:725c213b2396 174
el17arm 2:725c213b2396 175 /** Gets raw cartesian co-ordinates of joystick
el17arm 2:725c213b2396 176 * @returns a struct with x,y members, each in the range 0.0 to 1.0
el17arm 2:725c213b2396 177 */
el17arm 2:725c213b2396 178 Vector2D get_coord(); // cartesian co-ordinates x,y
el17arm 2:725c213b2396 179
el17arm 2:725c213b2396 180 /** Gets cartesian coordinates mapped to circular grid
el17arm 2:725c213b2396 181 * @returns a struct with x,y members, each in the range 0.0 to 1.0
el17arm 2:725c213b2396 182 */
el17arm 2:725c213b2396 183 Vector2D get_mapped_coord(); // x,y mapped to circle
el17arm 2:725c213b2396 184
el17arm 2:725c213b2396 185 /** Gets polar coordinates of the joystick
el17arm 2:725c213b2396 186 * @returns a struct contains mag and angle
el17arm 2:725c213b2396 187 */
el17arm 2:725c213b2396 188 Polar get_polar(); // mag and angle in struct form
el17arm 2:725c213b2396 189
el17arm 2:725c213b2396 190 private:
el17arm 2:725c213b2396 191 void init_buttons();
el17arm 2:725c213b2396 192 void tone_off();
el17arm 2:725c213b2396 193
el17arm 2:725c213b2396 194 void a_isr();
el17arm 2:725c213b2396 195 void b_isr();
el17arm 2:725c213b2396 196 void x_isr();
el17arm 2:725c213b2396 197 void y_isr();
el17arm 2:725c213b2396 198 void l_isr();
el17arm 2:725c213b2396 199 void r_isr();
el17arm 2:725c213b2396 200 void back_isr();
el17arm 2:725c213b2396 201 void start_isr();
el17arm 2:725c213b2396 202 void joy_isr();
el17arm 2:725c213b2396 203 };
el17arm 2:725c213b2396 204
el17arm 2:725c213b2396 205 #endif