Library for ELEC2645 Gamepad PCB. University of Leeds
Dependents: Project_MaZe1_copy Labirint Game_Controller_Project 200943373MAZE ... more
Gamepad.h@12:1b0b6355da4f, 2017-03-03 (annotated)
- Committer:
- valavanisalex
- Date:
- Fri Mar 03 12:35:43 2017 +0000
- Revision:
- 12:1b0b6355da4f
- Parent:
- 11:ff86b2ffce01
- Child:
- 13:ef5fc9f58805
Handle event flags using a single _event_state bitset and ID flags
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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eencae | 0:a6288c29b936 | 1 | #ifndef GAMEPAD_H |
eencae | 0:a6288c29b936 | 2 | #define GAMEPAD_H |
eencae | 0:a6288c29b936 | 3 | |
valavanisalex | 12:1b0b6355da4f | 4 | #include <bitset> |
valavanisalex | 12:1b0b6355da4f | 5 | |
eencae | 0:a6288c29b936 | 6 | #include "mbed.h" |
eencae | 3:964a6d95acdd | 7 | |
eencae | 3:964a6d95acdd | 8 | #define TOL 0.1f |
eencae | 3:964a6d95acdd | 9 | #define RAD2DEG 57.2957795131f |
eencae | 3:964a6d95acdd | 10 | |
eencae | 9:893189072e89 | 11 | /** Enum for direction */ |
eencae | 3:964a6d95acdd | 12 | enum Direction { |
eencae | 9:893189072e89 | 13 | CENTRE, /**< joystick centred */ |
eencae | 9:893189072e89 | 14 | N, /**< pushed North (0)*/ |
eencae | 9:893189072e89 | 15 | NE, /**< pushed North-East (45) */ |
eencae | 9:893189072e89 | 16 | E, /**< pushed East (90) */ |
eencae | 9:893189072e89 | 17 | SE, /**< pushed South-East (135) */ |
eencae | 9:893189072e89 | 18 | S, /**< pushed South (180) */ |
eencae | 9:893189072e89 | 19 | SW, /**< pushed South-West (225) */ |
eencae | 9:893189072e89 | 20 | W, /**< pushed West (270) */ |
eencae | 9:893189072e89 | 21 | NW /**< pushed North-West (315) */ |
eencae | 3:964a6d95acdd | 22 | }; |
eencae | 3:964a6d95acdd | 23 | |
eencae | 9:893189072e89 | 24 | /** Vector 2D struct */ |
eencae | 3:964a6d95acdd | 25 | struct Vector2D { |
eencae | 9:893189072e89 | 26 | float x; /**< float for x value */ |
eencae | 9:893189072e89 | 27 | float y; /**< float for y value */ |
eencae | 3:964a6d95acdd | 28 | }; |
eencae | 3:964a6d95acdd | 29 | |
eencae | 9:893189072e89 | 30 | /** Polar coordinate struct */ |
eencae | 3:964a6d95acdd | 31 | struct Polar { |
eencae | 9:893189072e89 | 32 | float mag; /**< float for magnitude */ |
eencae | 9:893189072e89 | 33 | float angle; /**< float for angle (in degrees) */ |
eencae | 3:964a6d95acdd | 34 | }; |
eencae | 0:a6288c29b936 | 35 | |
valavanisalex | 12:1b0b6355da4f | 36 | |
valavanisalex | 12:1b0b6355da4f | 37 | /** |
valavanisalex | 12:1b0b6355da4f | 38 | * List of events that can be registered on the gamepad |
valavanisalex | 12:1b0b6355da4f | 39 | */ |
valavanisalex | 12:1b0b6355da4f | 40 | enum GamepadEvent { |
valavanisalex | 12:1b0b6355da4f | 41 | EVENT_A_PRESSED, ///< Button A has been pressed |
valavanisalex | 12:1b0b6355da4f | 42 | EVENT_B_PRESSED, ///< Button B has been pressed |
valavanisalex | 12:1b0b6355da4f | 43 | EVENT_X_PRESSED, ///< Button X has been pressed |
valavanisalex | 12:1b0b6355da4f | 44 | EVENT_Y_PRESSED, ///< Button Y has been pressed |
valavanisalex | 12:1b0b6355da4f | 45 | EVENT_L_PRESSED, ///< Button L has been pressed |
valavanisalex | 12:1b0b6355da4f | 46 | EVENT_R_PRESSED, ///< Button R has been pressed |
valavanisalex | 12:1b0b6355da4f | 47 | EVENT_BACK_PRESSED, ///< Button "Back" has been pressed |
valavanisalex | 12:1b0b6355da4f | 48 | EVENT_START_PRESSED, ///< Button "Start" has been pressed |
valavanisalex | 12:1b0b6355da4f | 49 | EVENT_JOY_PRESSED, ///< Joystick button has been pressed |
valavanisalex | 12:1b0b6355da4f | 50 | N_EVENTS ///< A dummy flag that marks the end of the list |
valavanisalex | 12:1b0b6355da4f | 51 | }; |
valavanisalex | 12:1b0b6355da4f | 52 | |
eencae | 9:893189072e89 | 53 | /** Gamepad Class |
eencae | 9:893189072e89 | 54 | @brief Library for interfacing with ELEC2645 Gamepad PCB, University of Leeds |
eencae | 9:893189072e89 | 55 | @author Dr Craig A. Evans |
eencae | 9:893189072e89 | 56 | @date Febraury 2017 |
eencae | 9:893189072e89 | 57 | */ |
eencae | 0:a6288c29b936 | 58 | class Gamepad |
eencae | 0:a6288c29b936 | 59 | { |
valavanisalex | 11:ff86b2ffce01 | 60 | private: |
valavanisalex | 11:ff86b2ffce01 | 61 | PwmOut *_led1; |
valavanisalex | 11:ff86b2ffce01 | 62 | PwmOut *_led2; |
valavanisalex | 11:ff86b2ffce01 | 63 | PwmOut *_led3; |
valavanisalex | 11:ff86b2ffce01 | 64 | PwmOut *_led4; |
valavanisalex | 11:ff86b2ffce01 | 65 | PwmOut *_led5; |
valavanisalex | 11:ff86b2ffce01 | 66 | PwmOut *_led6; |
valavanisalex | 11:ff86b2ffce01 | 67 | |
valavanisalex | 11:ff86b2ffce01 | 68 | InterruptIn *_button_A; |
valavanisalex | 11:ff86b2ffce01 | 69 | InterruptIn *_button_B; |
valavanisalex | 11:ff86b2ffce01 | 70 | InterruptIn *_button_X; |
valavanisalex | 11:ff86b2ffce01 | 71 | InterruptIn *_button_Y; |
valavanisalex | 11:ff86b2ffce01 | 72 | InterruptIn *_button_back; |
valavanisalex | 11:ff86b2ffce01 | 73 | InterruptIn *_button_start; |
valavanisalex | 11:ff86b2ffce01 | 74 | InterruptIn *_button_L; |
valavanisalex | 11:ff86b2ffce01 | 75 | InterruptIn *_button_R; |
valavanisalex | 11:ff86b2ffce01 | 76 | InterruptIn *_button_joystick; |
valavanisalex | 11:ff86b2ffce01 | 77 | |
valavanisalex | 11:ff86b2ffce01 | 78 | AnalogIn *_vert; |
valavanisalex | 11:ff86b2ffce01 | 79 | AnalogIn *_horiz; |
valavanisalex | 11:ff86b2ffce01 | 80 | |
valavanisalex | 11:ff86b2ffce01 | 81 | PwmOut *_buzzer; |
valavanisalex | 11:ff86b2ffce01 | 82 | AnalogIn *_pot; |
valavanisalex | 11:ff86b2ffce01 | 83 | |
valavanisalex | 11:ff86b2ffce01 | 84 | Timeout *_timeout; |
valavanisalex | 11:ff86b2ffce01 | 85 | |
valavanisalex | 12:1b0b6355da4f | 86 | std::bitset<N_EVENTS> _event_state; ///< A binary list of buttons that has been pressed |
valavanisalex | 11:ff86b2ffce01 | 87 | |
valavanisalex | 11:ff86b2ffce01 | 88 | // centred x,y values |
valavanisalex | 11:ff86b2ffce01 | 89 | float _x0; |
valavanisalex | 11:ff86b2ffce01 | 90 | float _y0; |
eencae | 0:a6288c29b936 | 91 | |
eencae | 0:a6288c29b936 | 92 | public: |
eencae | 0:a6288c29b936 | 93 | |
eencae | 9:893189072e89 | 94 | /** Constructor */ |
eencae | 0:a6288c29b936 | 95 | Gamepad(); |
eencae | 8:7eaf26f4b5f2 | 96 | |
eencae | 9:893189072e89 | 97 | /** Destructor */ |
eencae | 1:6d25cd49059b | 98 | ~Gamepad(); |
eencae | 0:a6288c29b936 | 99 | |
eencae | 9:893189072e89 | 100 | /** Initialise all peripherals and configure interrupts */ |
eencae | 0:a6288c29b936 | 101 | void init(); |
eencae | 8:7eaf26f4b5f2 | 102 | |
eencae | 9:893189072e89 | 103 | /** Turn all LEDs on */ |
eencae | 0:a6288c29b936 | 104 | void leds_on(); |
eencae | 8:7eaf26f4b5f2 | 105 | |
eencae | 9:893189072e89 | 106 | /** Turn all LEDs off */ |
eencae | 0:a6288c29b936 | 107 | void leds_off(); |
eencae | 8:7eaf26f4b5f2 | 108 | |
eencae | 9:893189072e89 | 109 | /** Set all LEDs to duty-cycle |
eencae | 9:893189072e89 | 110 | *@param value in range 0.0 to 1.0 |
eencae | 9:893189072e89 | 111 | */ |
valavanisalex | 11:ff86b2ffce01 | 112 | void leds(float val) const; |
eencae | 9:893189072e89 | 113 | |
eencae | 9:893189072e89 | 114 | /** Set LED to duty-cycle |
eencae | 9:893189072e89 | 115 | *@param value in range 0.0 to 1.0 |
eencae | 8:7eaf26f4b5f2 | 116 | */ |
eencae | 10:a13d2f9d8a14 | 117 | void led1(float val); |
eencae | 9:893189072e89 | 118 | |
eencae | 9:893189072e89 | 119 | /** Set LED to duty-cycle |
eencae | 9:893189072e89 | 120 | *@param value in range 0.0 to 1.0 |
eencae | 9:893189072e89 | 121 | */ |
eencae | 10:a13d2f9d8a14 | 122 | void led2(float val); |
eencae | 9:893189072e89 | 123 | |
eencae | 9:893189072e89 | 124 | /** Set LED to duty-cycle |
eencae | 9:893189072e89 | 125 | *@param value in range 0.0 to 1.0 |
eencae | 9:893189072e89 | 126 | */ |
eencae | 10:a13d2f9d8a14 | 127 | void led3(float val); |
eencae | 9:893189072e89 | 128 | |
eencae | 9:893189072e89 | 129 | /** Set LED to duty-cycle |
eencae | 9:893189072e89 | 130 | *@param value in range 0.0 to 1.0 |
eencae | 9:893189072e89 | 131 | */ |
eencae | 10:a13d2f9d8a14 | 132 | void led4(float val); |
eencae | 9:893189072e89 | 133 | |
eencae | 9:893189072e89 | 134 | /** Set LED to duty-cycle |
eencae | 9:893189072e89 | 135 | *@param value in range 0.0 to 1.0 |
eencae | 9:893189072e89 | 136 | */ |
eencae | 10:a13d2f9d8a14 | 137 | void led5(float val); |
eencae | 9:893189072e89 | 138 | |
eencae | 9:893189072e89 | 139 | /** Set LED to duty-cycle |
eencae | 9:893189072e89 | 140 | *@param value in range 0.0 to 1.0 |
eencae | 9:893189072e89 | 141 | */ |
eencae | 10:a13d2f9d8a14 | 142 | void led6(float val); |
eencae | 1:6d25cd49059b | 143 | |
eencae | 8:7eaf26f4b5f2 | 144 | /** Read potentiometer |
eencae | 9:893189072e89 | 145 | *@returns potentiometer value in range 0.0 to 1.0 |
eencae | 8:7eaf26f4b5f2 | 146 | */ |
valavanisalex | 11:ff86b2ffce01 | 147 | float read_pot() const; |
eencae | 8:7eaf26f4b5f2 | 148 | |
eencae | 8:7eaf26f4b5f2 | 149 | /** Play tone on piezo |
eencae | 9:893189072e89 | 150 | * @param frequency in Hz |
eencae | 9:893189072e89 | 151 | * @param duration of tone in seconds |
eencae | 8:7eaf26f4b5f2 | 152 | */ |
eencae | 1:6d25cd49059b | 153 | void tone(float frequency, float duration); |
eencae | 1:6d25cd49059b | 154 | |
valavanisalex | 12:1b0b6355da4f | 155 | /** |
valavanisalex | 12:1b0b6355da4f | 156 | * @brief Check whether an event flag has been set and clear it |
valavanisalex | 12:1b0b6355da4f | 157 | * @param id[in] The ID of the event to test |
valavanisalex | 12:1b0b6355da4f | 158 | * @return true if the event occurred |
valavanisalex | 12:1b0b6355da4f | 159 | */ |
valavanisalex | 12:1b0b6355da4f | 160 | bool check_event(GamepadEvent const id); |
valavanisalex | 12:1b0b6355da4f | 161 | |
eencae | 8:7eaf26f4b5f2 | 162 | /** Get magnitude of joystick movement |
eencae | 9:893189072e89 | 163 | * @returns value in range 0.0 to 1.0 |
eencae | 8:7eaf26f4b5f2 | 164 | */ |
eencae | 8:7eaf26f4b5f2 | 165 | |
eencae | 8:7eaf26f4b5f2 | 166 | float get_mag(); |
eencae | 9:893189072e89 | 167 | |
eencae | 8:7eaf26f4b5f2 | 168 | /** Get angle of joystick movement |
eencae | 9:893189072e89 | 169 | * @returns value in range 0.0 to 359.9. 0.0 corresponds to N, 180.0 to S. -1.0 is central |
eencae | 8:7eaf26f4b5f2 | 170 | */ |
eencae | 3:964a6d95acdd | 171 | float get_angle(); |
eencae | 9:893189072e89 | 172 | |
eencae | 8:7eaf26f4b5f2 | 173 | /** Gets joystick direction |
eencae | 9:893189072e89 | 174 | * @returns an enum: CENTRE, N, NE, E, SE, S, SW, W, NW, |
eencae | 8:7eaf26f4b5f2 | 175 | */ |
eencae | 3:964a6d95acdd | 176 | Direction get_direction(); // N,NE,E,SE etc. |
eencae | 9:893189072e89 | 177 | |
eencae | 8:7eaf26f4b5f2 | 178 | /** Gets raw cartesian co-ordinates of joystick |
eencae | 9:893189072e89 | 179 | * @returns a struct with x,y members, each in the range 0.0 to 1.0 |
eencae | 8:7eaf26f4b5f2 | 180 | */ |
eencae | 5:ce5eae9ee934 | 181 | Vector2D get_coord(); // cartesian co-ordinates x,y |
eencae | 9:893189072e89 | 182 | |
eencae | 8:7eaf26f4b5f2 | 183 | /** Gets cartesian coordinates mapped to circular grid |
eencae | 9:893189072e89 | 184 | * @returns a struct with x,y members, each in the range 0.0 to 1.0 |
eencae | 8:7eaf26f4b5f2 | 185 | */ |
eencae | 5:ce5eae9ee934 | 186 | Vector2D get_mapped_coord(); // x,y mapped to circle |
eencae | 9:893189072e89 | 187 | |
eencae | 8:7eaf26f4b5f2 | 188 | /** Gets polar coordinates of the joystick |
eencae | 9:893189072e89 | 189 | * @returns a struct contains mag and angle |
eencae | 8:7eaf26f4b5f2 | 190 | */ |
eencae | 5:ce5eae9ee934 | 191 | Polar get_polar(); // mag and angle in struct form |
eencae | 3:964a6d95acdd | 192 | |
eencae | 0:a6288c29b936 | 193 | private: |
eencae | 1:6d25cd49059b | 194 | void init_buttons(); |
eencae | 1:6d25cd49059b | 195 | void tone_off(); |
eencae | 3:964a6d95acdd | 196 | |
eencae | 1:6d25cd49059b | 197 | void a_isr(); |
eencae | 1:6d25cd49059b | 198 | void b_isr(); |
eencae | 1:6d25cd49059b | 199 | void x_isr(); |
eencae | 1:6d25cd49059b | 200 | void y_isr(); |
eencae | 1:6d25cd49059b | 201 | void l_isr(); |
eencae | 1:6d25cd49059b | 202 | void r_isr(); |
eencae | 1:6d25cd49059b | 203 | void back_isr(); |
eencae | 1:6d25cd49059b | 204 | void start_isr(); |
eencae | 3:964a6d95acdd | 205 | void joy_isr(); |
eencae | 0:a6288c29b936 | 206 | }; |
eencae | 0:a6288c29b936 | 207 | |
eencae | 0:a6288c29b936 | 208 | #endif |