Library for ELEC2645 Gamepad PCB. University of Leeds Version 2 January 2020
Dependents: ELEC2645_Ticker_WAV ELEC2645_Project_username ELEC2645_Project_el18vgt ELEC2645_Project_el17oc11 ... more
Gamepad.h
- Committer:
- eencae
- Date:
- 2020-01-27
- Revision:
- 21:da0b4e14c867
- Parent:
- 20:c0959710291b
- Child:
- 22:72357412608d
File content as of revision 21:da0b4e14c867:
#ifndef GAMEPAD_H #define GAMEPAD_H #include <bitset> // Forward declaration of the classes that we use from the mbed library // This avoids the need for us to include the huge mbed.h header inside our // own library API namespace mbed { class AnalogIn; class InterruptIn; class PwmOut; class AnalogOut; class Ticker; class Timeout; } #define TOL 0.1f #define RAD2DEG 57.2957795131f #define PI 3.14159265359 /** Enum for direction */ enum Direction { CENTRE, /**< joystick centred */ N, /**< pushed North (0)*/ NE, /**< pushed North-East (45) */ E, /**< pushed East (90) */ SE, /**< pushed South-East (135) */ S, /**< pushed South (180) */ SW, /**< pushed South-West (225) */ W, /**< pushed West (270) */ NW /**< pushed North-West (315) */ }; /** Vector 2D struct */ struct Vector2D { float x; /**< float for x value */ float y; /**< float for y value */ }; /** Polar coordinate struct */ struct Polar { float mag; /**< float for magnitude */ float angle; /**< float for angle (in degrees) */ }; /** Gamepad Class * @brief Library for interfacing with ELEC2645 Gamepad PCB, University of Leeds * @author Dr Craig A. Evans * @author Dr Alex Valavanis */ class Gamepad { private: mbed::PwmOut *_led1; mbed::PwmOut *_led2; mbed::PwmOut *_led3; mbed::PwmOut *_led4; mbed::PwmOut *_led5; mbed::PwmOut *_led6; mbed::InterruptIn *_button_A; mbed::InterruptIn *_button_B; mbed::InterruptIn *_button_X; mbed::InterruptIn *_button_Y; mbed::InterruptIn *_button_start; mbed::AnalogIn *_vert; mbed::AnalogIn *_horiz; mbed::AnalogIn *_pot1; mbed::AnalogIn *_pot2; mbed::AnalogOut *dac; mbed::Ticker *ticker; mbed::Timeout *timeout; mbed::Timeout *note_timeout; // centred x,y values float _x0; float _y0; float *_sample_array; const int *_notes; const int *_durations; int _n; int _melody_length; volatile unsigned int _sample; volatile unsigned int _note; float _bpm; bool _repeat; public: /** Constructor */ Gamepad(); /** Initialise all peripherals and configure interrupts */ void init(); /** Turn all LEDs on */ void leds_on(); /** Turn all LEDs off */ void leds_off(); /** Set all LEDs to duty-cycle *@param value in range 0.0 to 1.0 */ void leds(float val) const; /** Set LED to duty-cycle *@param led number (0 to 5) *@param value in range 0.0 to 1.0 */ void led(int n,float val) const; /** Read potentiometer 1 value *@returns potentiometer value in range 0.0 to 1.0 */ float read_pot1() const; /** Read potentiometer 2 value *@returns potentiometer value in range 0.0 to 1.0 */ float read_pot2() const; /** Get magnitude of joystick movement * @returns value in range 0.0 to 1.0 */ float get_mag(); /** Get angle of joystick movement * @returns value in range 0.0 to 359.9. 0.0 corresponds to N, 180.0 to S. -1.0 is central */ float get_angle(); /** Gets joystick direction * @returns an enum: CENTRE, N, NE, E, SE, S, SW, W, NW, */ Direction get_direction(); // N,NE,E,SE etc. /** Gets raw cartesian co-ordinates of joystick * @returns a struct with x,y members, each in the range 0.0 to 1.0 */ Vector2D get_coord(); // cartesian co-ordinates x,y /** Gets cartesian coordinates mapped to circular grid * @returns a struct with x,y members, each in the range 0.0 to 1.0 */ Vector2D get_mapped_coord(); // x,y mapped to circle /** Gets polar coordinates of the joystick * @returns a struct contains mag and angle */ Polar get_polar(); // mag and angle in struct form /** Resets all button states. Useful for calling inbetween scenes * where you do not want button presses from the previous scene effecting * the current scene */ void reset_buttons(); /** Returns true if A has been pressed * @returns a bool corresponding to A being pressed */ bool A_pressed(); /** Returns true if A is held * @returns a bool corresponding to A being held * */ bool A_held(); /** Returns true if B has been pressed * @returns a bool corresponding to B being pressed */ bool B_pressed(); /** Returns true if B is held * @returns a bool corresponding to B being held * */ bool B_held(); /** Returns true if B has been pressed * @returns a bool corresponding to B being pressed */ bool X_pressed(); /** Returns true if X is held * @returns a bool corresponding to X being held * */ bool X_held(); /** Returns true if Y has been pressed * @returns a bool corresponding to Y being pressed */ bool Y_pressed(); /** Returns true if Y is held * @returns a bool corresponding to Y being held * */ bool Y_held(); /** Returns true if start has been pressed * @returns a bool corresponding to start being pressed */ bool start_pressed(); /** Returns true if start is held * @returns a bool corresponding to start being held * */ bool start_held(); // play single note of specific duration void tone(const float frequency,const float duration); // play array of notes and duration, must send length and beats per minute void play_melody(int length,const int *notes,const int *durations,float bpm,bool repeat); // change the BPM void set_bpm(float bpm); private: volatile bool A_fall; void A_fall_interrupt(); volatile bool B_fall; void B_fall_interrupt(); volatile bool X_fall; void X_fall_interrupt(); volatile bool Y_fall; void Y_fall_interrupt(); volatile bool start_fall; void start_fall_interrupt(); // Tone functions void ticker_isr(); void timeout_isr(); void note_timeout_isr(); void play_next_note(); }; // Note definitions from Arduino.cc #define NOTE_B0 31 #define NOTE_C1 33 #define NOTE_CS1 35 #define NOTE_D1 37 #define NOTE_DS1 39 #define NOTE_E1 41 #define NOTE_F1 44 #define NOTE_FS1 46 #define NOTE_G1 49 #define NOTE_GS1 52 #define NOTE_A1 55 #define NOTE_AS1 58 #define NOTE_B1 62 #define NOTE_C2 65 #define NOTE_CS2 69 #define NOTE_D2 73 #define NOTE_DS2 78 #define NOTE_E2 82 #define NOTE_F2 87 #define NOTE_FS2 93 #define NOTE_G2 98 #define NOTE_GS2 104 #define NOTE_A2 110 #define NOTE_AS2 117 #define NOTE_B2 123 #define NOTE_C3 131 #define NOTE_CS3 139 #define NOTE_D3 147 #define NOTE_DS3 156 #define NOTE_E3 165 #define NOTE_F3 175 #define NOTE_FS3 185 #define NOTE_G3 196 #define NOTE_GS3 208 #define NOTE_A3 220 #define NOTE_AS3 233 #define NOTE_B3 247 #define NOTE_C4 262 #define NOTE_CS4 277 #define NOTE_D4 294 #define NOTE_DS4 311 #define NOTE_E4 330 #define NOTE_F4 349 #define NOTE_FS4 370 #define NOTE_G4 392 #define NOTE_GS4 415 #define NOTE_A4 440 #define NOTE_AS4 466 #define NOTE_B4 494 #define NOTE_C5 523 #define NOTE_CS5 554 #define NOTE_D5 587 #define NOTE_DS5 622 #define NOTE_E5 659 #define NOTE_F5 698 #define NOTE_FS5 740 #define NOTE_G5 784 #define NOTE_GS5 831 #define NOTE_A5 880 #define NOTE_AS5 932 #define NOTE_B5 988 #define NOTE_C6 1047 #define NOTE_CS6 1109 #define NOTE_D6 1175 #define NOTE_DS6 1245 #define NOTE_E6 1319 #define NOTE_F6 1397 #define NOTE_FS6 1480 #define NOTE_G6 1568 #define NOTE_GS6 1661 #define NOTE_A6 1760 #define NOTE_AS6 1865 #define NOTE_B6 1976 #define NOTE_C7 2093 #define NOTE_CS7 2217 #define NOTE_D7 2349 #define NOTE_DS7 2489 #define NOTE_E7 2637 #define NOTE_F7 2794 #define NOTE_FS7 2960 #define NOTE_G7 3136 #define NOTE_GS7 3322 #define NOTE_A7 3520 #define NOTE_AS7 3729 #define NOTE_B7 3951 #define NOTE_C8 4186 #define NOTE_CS8 4435 #define NOTE_D8 4699 #define NOTE_DS8 4978 #endif