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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?
User | Revision | Line number | New 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 |