Controls:

Diff: Gamepad2/Gamepad.h

Revision:

1:35dba0833c7d

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Gamepad2/Gamepad.h	Fri May 22 10:36:01 2020 +0000
@@ -0,0 +1,374 @@
+#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
+ * @author Joshua Davy
+ */
+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 a single tone for the specifed duration
+    *@param note frequency (in Hz)
+    *@param duration (in s)
+    */
+    void tone(const float frequency,const float duration);
+    
+    /** Play a melody
+    *@param length of note array
+    *@param array of note frequencies (in Hz) - 0 treated as a rest
+    *@param array of note durations (4 corresponds to 1/4, 8 is 1/8 etc.)
+    *@param beats per minute
+    *@param whether to repeat or play just once
+    */
+    void play_melody(int length,const int *notes,const int *durations,float bpm,bool repeat);
+    
+    /** Set the BPM of the melody
+    *@param beats per minute
+    */
+    void set_bpm(float bpm);
+    
+    /** Write an analog voltage to the speaker
+    *@param voltage in range 0.0 to 1.0 (corresponds 0.0 to 3.3 V)
+    */
+    void write_dac(float val);
+
+
+
+
+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
\ No newline at end of file