RUOFAN LI / Mbed 2 deprecated el17rl1

Li Ruofan 201199450

Dependencies:   mbed Gamepad Joystick

Joystick/Joystick.h@3:cf9fead9c3f4, 2020-05-14 (annotated)

Committer:
DannyLee
Date:
Thu May 14 13:12:28 2020 +0000
Revision:
3:cf9fead9c3f4
aaa

Who changed what in which revision?

UserRevisionLine numberNew contents of line
DannyLee 3:cf9fead9c3f4 1 #ifndef JOYSTICK_H
DannyLee 3:cf9fead9c3f4 2 #define JOYSTICK_H
DannyLee 3:cf9fead9c3f4 3
DannyLee 3:cf9fead9c3f4 4 #include "mbed.h"
DannyLee 3:cf9fead9c3f4 5
DannyLee 3:cf9fead9c3f4 6 // this value can be tuned to alter tolerance of joystick movement
DannyLee 3:cf9fead9c3f4 7 #define TOL 0.1f
DannyLee 3:cf9fead9c3f4 8 #define RAD2DEG 57.2957795131f
DannyLee 3:cf9fead9c3f4 9
DannyLee 3:cf9fead9c3f4 10 enum Direction {
DannyLee 3:cf9fead9c3f4 11 CENTRE, // 0
DannyLee 3:cf9fead9c3f4 12 N, // 1
DannyLee 3:cf9fead9c3f4 13 NE, // 2
DannyLee 3:cf9fead9c3f4 14 E, // 3
DannyLee 3:cf9fead9c3f4 15 SE, // 4
DannyLee 3:cf9fead9c3f4 16 S, // 5
DannyLee 3:cf9fead9c3f4 17 SW, // 6
DannyLee 3:cf9fead9c3f4 18 W, // 7
DannyLee 3:cf9fead9c3f4 19 NW // 8
DannyLee 3:cf9fead9c3f4 20 };
DannyLee 3:cf9fead9c3f4 21
DannyLee 3:cf9fead9c3f4 22 struct Vector2D {
DannyLee 3:cf9fead9c3f4 23 float x;
DannyLee 3:cf9fead9c3f4 24 float y;
DannyLee 3:cf9fead9c3f4 25 };
DannyLee 3:cf9fead9c3f4 26
DannyLee 3:cf9fead9c3f4 27 struct Polar {
DannyLee 3:cf9fead9c3f4 28 float mag;
DannyLee 3:cf9fead9c3f4 29 float angle;
DannyLee 3:cf9fead9c3f4 30 };
DannyLee 3:cf9fead9c3f4 31
DannyLee 3:cf9fead9c3f4 32 /** Joystick Class
DannyLee 3:cf9fead9c3f4 33 @author Dr Craig A. Evans, University of Leeds
DannyLee 3:cf9fead9c3f4 34 @brief Library for interfacing with analogue joystick
DannyLee 3:cf9fead9c3f4 35
DannyLee 3:cf9fead9c3f4 36 Example:
DannyLee 3:cf9fead9c3f4 37
DannyLee 3:cf9fead9c3f4 38 @code
DannyLee 3:cf9fead9c3f4 39
DannyLee 3:cf9fead9c3f4 40 #include "mbed.h"
DannyLee 3:cf9fead9c3f4 41 #include "Joystick.h"
DannyLee 3:cf9fead9c3f4 42
DannyLee 3:cf9fead9c3f4 43 // y x button
DannyLee 3:cf9fead9c3f4 44 Joystick joystick(PTB10,PTB11,PTC16);
DannyLee 3:cf9fead9c3f4 45
DannyLee 3:cf9fead9c3f4 46 int main() {
DannyLee 3:cf9fead9c3f4 47
DannyLee 3:cf9fead9c3f4 48 joystick.init();
DannyLee 3:cf9fead9c3f4 49
DannyLee 3:cf9fead9c3f4 50 while(1) {
DannyLee 3:cf9fead9c3f4 51
DannyLee 3:cf9fead9c3f4 52 Vector2D coord = joystick.get_coord();
DannyLee 3:cf9fead9c3f4 53 printf("Coord = %f,%f\n",coord.x,coord.y);
DannyLee 3:cf9fead9c3f4 54
DannyLee 3:cf9fead9c3f4 55 Vector2D mapped_coord = joystick.get_mapped_coord();
DannyLee 3:cf9fead9c3f4 56 printf("Mapped coord = %f,%f\n",mapped_coord.x,mapped_coord.y);
DannyLee 3:cf9fead9c3f4 57
DannyLee 3:cf9fead9c3f4 58 float mag = joystick.get_mag();
DannyLee 3:cf9fead9c3f4 59 float angle = joystick.get_angle();
DannyLee 3:cf9fead9c3f4 60 printf("Mag = %f Angle = %f\n",mag,angle);
DannyLee 3:cf9fead9c3f4 61
DannyLee 3:cf9fead9c3f4 62 Direction d = joystick.get_direction();
DannyLee 3:cf9fead9c3f4 63 printf("Direction = %i\n",d);
DannyLee 3:cf9fead9c3f4 64
DannyLee 3:cf9fead9c3f4 65 if (joystick.button_pressed() ) {
DannyLee 3:cf9fead9c3f4 66 printf("Button Pressed\n");
DannyLee 3:cf9fead9c3f4 67 }
DannyLee 3:cf9fead9c3f4 68
DannyLee 3:cf9fead9c3f4 69 wait(0.5);
DannyLee 3:cf9fead9c3f4 70 }
DannyLee 3:cf9fead9c3f4 71
DannyLee 3:cf9fead9c3f4 72
DannyLee 3:cf9fead9c3f4 73 }
DannyLee 3:cf9fead9c3f4 74
DannyLee 3:cf9fead9c3f4 75 * @endcode
DannyLee 3:cf9fead9c3f4 76 */
DannyLee 3:cf9fead9c3f4 77 class Joystick
DannyLee 3:cf9fead9c3f4 78 {
DannyLee 3:cf9fead9c3f4 79 public:
DannyLee 3:cf9fead9c3f4 80
DannyLee 3:cf9fead9c3f4 81 // y-pot x-pot button
DannyLee 3:cf9fead9c3f4 82 Joystick(PinName vertPin,PinName horizPin,PinName clickPin);
DannyLee 3:cf9fead9c3f4 83
DannyLee 3:cf9fead9c3f4 84 void init(); // needs to be called at start with joystick centred
DannyLee 3:cf9fead9c3f4 85 float get_mag(); // polar
DannyLee 3:cf9fead9c3f4 86 float get_angle(); // polar
DannyLee 3:cf9fead9c3f4 87 Vector2D get_coord(); // cartesian co-ordinates x,y
DannyLee 3:cf9fead9c3f4 88 Vector2D get_mapped_coord(); // x,y mapped to circle
DannyLee 3:cf9fead9c3f4 89 Direction get_direction(); // N,NE,E,SE etc.
DannyLee 3:cf9fead9c3f4 90 Polar get_polar(); // mag and angle in struct form
DannyLee 3:cf9fead9c3f4 91 bool button_pressed(); // read button flag set in ISR when button pressed
DannyLee 3:cf9fead9c3f4 92
DannyLee 3:cf9fead9c3f4 93 private:
DannyLee 3:cf9fead9c3f4 94
DannyLee 3:cf9fead9c3f4 95 AnalogIn *vert;
DannyLee 3:cf9fead9c3f4 96 AnalogIn *horiz;
DannyLee 3:cf9fead9c3f4 97 InterruptIn *click;
DannyLee 3:cf9fead9c3f4 98
DannyLee 3:cf9fead9c3f4 99 int _click_flag; // flag set in ISR
DannyLee 3:cf9fead9c3f4 100 void click_isr(); // ISR on button press
DannyLee 3:cf9fead9c3f4 101
DannyLee 3:cf9fead9c3f4 102 // centred x,y values
DannyLee 3:cf9fead9c3f4 103 float _x0;
DannyLee 3:cf9fead9c3f4 104 float _y0;
DannyLee 3:cf9fead9c3f4 105
DannyLee 3:cf9fead9c3f4 106 };
DannyLee 3:cf9fead9c3f4 107
DannyLee 3:cf9fead9c3f4 108 #endif