(DA) Internet of Things and Smart Electronics- ELE3006M2122 / Mbed OS ObjectDetection_LiamCox

First Draft, serial print change based on distance

Joystick/Joystick.h@17:02676e9bbc73, 2022-02-04 (annotated)

Committer:
liam94
Date:
Fri Feb 04 18:30:13 2022 +0000
Revision:
17:02676e9bbc73
Parent:
1:a1795335ef8c 
final update to all comments

Who changed what in which revision?

UserRevisionLine numberNew contents of line
liam94 1:a1795335ef8c 1 #ifndef JOYSTICK_H
liam94 1:a1795335ef8c 2 #define JOYSTICK_H
liam94 1:a1795335ef8c 3
liam94 1:a1795335ef8c 4 #include "mbed.h"
liam94 1:a1795335ef8c 5
liam94 1:a1795335ef8c 6 // this value can be tuned to alter tolerance of joystick movement
liam94 1:a1795335ef8c 7 #define TOL 0.1f
liam94 1:a1795335ef8c 8 #define RAD2DEG 57.2957795131f
liam94 1:a1795335ef8c 9
liam94 1:a1795335ef8c 10 enum Direction {
liam94 1:a1795335ef8c 11 CENTRE, // 0
liam94 1:a1795335ef8c 12 N, // 1
liam94 1:a1795335ef8c 13 NE, // 2
liam94 1:a1795335ef8c 14 E, // 3
liam94 1:a1795335ef8c 15 SE, // 4
liam94 1:a1795335ef8c 16 S, // 5
liam94 1:a1795335ef8c 17 SW, // 6
liam94 1:a1795335ef8c 18 W, // 7
liam94 1:a1795335ef8c 19 NW // 8
liam94 1:a1795335ef8c 20 };
liam94 1:a1795335ef8c 21
liam94 1:a1795335ef8c 22 struct Vector2D {
liam94 1:a1795335ef8c 23 float x;
liam94 1:a1795335ef8c 24 float y;
liam94 1:a1795335ef8c 25 };
liam94 1:a1795335ef8c 26
liam94 1:a1795335ef8c 27 struct Polar {
liam94 1:a1795335ef8c 28 float mag;
liam94 1:a1795335ef8c 29 float angle;
liam94 1:a1795335ef8c 30 };
liam94 1:a1795335ef8c 31
liam94 1:a1795335ef8c 32 /** Joystick Class
liam94 1:a1795335ef8c 33 @brief Acknowledgements to Dr Craig A. Evans, University of Leeds
liam94 1:a1795335ef8c 34 @brief Library for interfacing with analogue joystick
liam94 1:a1795335ef8c 35 @upgraded Dr Edmond Nurellari, University of Lincoln
liam94 1:a1795335ef8c 36
liam94 1:a1795335ef8c 37 Example:
liam94 1:a1795335ef8c 38
liam94 1:a1795335ef8c 39 @code
liam94 1:a1795335ef8c 40
liam94 1:a1795335ef8c 41 #include "mbed.h"
liam94 1:a1795335ef8c 42 #include "Joystick.h"
liam94 1:a1795335ef8c 43
liam94 1:a1795335ef8c 44 // y x button
liam94 1:a1795335ef8c 45 Joystick joystick(PTB10,PTB11,PTC16);
liam94 1:a1795335ef8c 46
liam94 1:a1795335ef8c 47 int main() {
liam94 1:a1795335ef8c 48
liam94 1:a1795335ef8c 49 joystick.init();
liam94 1:a1795335ef8c 50
liam94 1:a1795335ef8c 51 while(1) {
liam94 1:a1795335ef8c 52
liam94 1:a1795335ef8c 53 Vector2D coord = joystick.get_coord();
liam94 1:a1795335ef8c 54 printf("Coord = %f,%f\n",coord.x,coord.y);
liam94 1:a1795335ef8c 55
liam94 1:a1795335ef8c 56 Vector2D mapped_coord = joystick.get_mapped_coord();
liam94 1:a1795335ef8c 57 printf("Mapped coord = %f,%f\n",mapped_coord.x,mapped_coord.y);
liam94 1:a1795335ef8c 58
liam94 1:a1795335ef8c 59 float mag = joystick.get_mag();
liam94 1:a1795335ef8c 60 float angle = joystick.get_angle();
liam94 1:a1795335ef8c 61 printf("Mag = %f Angle = %f\n",mag,angle);
liam94 1:a1795335ef8c 62
liam94 1:a1795335ef8c 63 Direction d = joystick.get_direction();
liam94 1:a1795335ef8c 64 printf("Direction = %i\n",d);
liam94 1:a1795335ef8c 65
liam94 1:a1795335ef8c 66 if (joystick.button_pressed() ) {
liam94 1:a1795335ef8c 67 printf("Button Pressed\n");
liam94 1:a1795335ef8c 68 }
liam94 1:a1795335ef8c 69
liam94 1:a1795335ef8c 70 wait(0.5);
liam94 1:a1795335ef8c 71 }
liam94 1:a1795335ef8c 72
liam94 1:a1795335ef8c 73
liam94 1:a1795335ef8c 74 }
liam94 1:a1795335ef8c 75
liam94 1:a1795335ef8c 76 * @endcode
liam94 1:a1795335ef8c 77 */
liam94 1:a1795335ef8c 78 class Joystick
liam94 1:a1795335ef8c 79 {
liam94 1:a1795335ef8c 80 public:
liam94 1:a1795335ef8c 81
liam94 1:a1795335ef8c 82 // y-pot x-pot button
liam94 1:a1795335ef8c 83 Joystick(PinName vertPin,PinName horizPin,PinName clickPin);
liam94 1:a1795335ef8c 84
liam94 1:a1795335ef8c 85 void init(); // needs to be called at start with joystick centred
liam94 1:a1795335ef8c 86 float get_mag(); // polar
liam94 1:a1795335ef8c 87 float get_angle(); // polar
liam94 1:a1795335ef8c 88 Vector2D get_coord(); // cartesian co-ordinates x,y
liam94 1:a1795335ef8c 89 Vector2D get_mapped_coord(); // x,y mapped to circle
liam94 1:a1795335ef8c 90 Direction get_direction(); // N,NE,E,SE etc.
liam94 1:a1795335ef8c 91 Polar get_polar(); // mag and angle in struct form
liam94 1:a1795335ef8c 92 bool button_pressed(); // read button flag set in ISR when button pressed
liam94 1:a1795335ef8c 93
liam94 1:a1795335ef8c 94 private:
liam94 1:a1795335ef8c 95
liam94 1:a1795335ef8c 96 AnalogIn *vert;
liam94 1:a1795335ef8c 97 AnalogIn *horiz;
liam94 1:a1795335ef8c 98 InterruptIn *click;
liam94 1:a1795335ef8c 99
liam94 1:a1795335ef8c 100 int _click_flag; // flag set in ISR
liam94 1:a1795335ef8c 101 void click_isr(); // ISR on button press
liam94 1:a1795335ef8c 102
liam94 1:a1795335ef8c 103 // centred x,y values
liam94 1:a1795335ef8c 104 float _x0;
liam94 1:a1795335ef8c 105 float _y0;
liam94 1:a1795335ef8c 106
liam94 1:a1795335ef8c 107 };
liam94 1:a1795335ef8c 108
liam94 1:a1795335ef8c 109 #endif