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Li Ruofan 201199450
Dependencies: mbed Gamepad Joystick
Joystick/Joystick.h
- Committer:
- DannyLee
- Date:
- 2020-05-14
- Revision:
- 3:cf9fead9c3f4
File content as of revision 3:cf9fead9c3f4:
#ifndef JOYSTICK_H #define JOYSTICK_H #include "mbed.h" // this value can be tuned to alter tolerance of joystick movement #define TOL 0.1f #define RAD2DEG 57.2957795131f enum Direction { CENTRE, // 0 N, // 1 NE, // 2 E, // 3 SE, // 4 S, // 5 SW, // 6 W, // 7 NW // 8 }; struct Vector2D { float x; float y; }; struct Polar { float mag; float angle; }; /** Joystick Class @author Dr Craig A. Evans, University of Leeds @brief Library for interfacing with analogue joystick Example: @code #include "mbed.h" #include "Joystick.h" // y x button Joystick joystick(PTB10,PTB11,PTC16); int main() { joystick.init(); while(1) { Vector2D coord = joystick.get_coord(); printf("Coord = %f,%f\n",coord.x,coord.y); Vector2D mapped_coord = joystick.get_mapped_coord(); printf("Mapped coord = %f,%f\n",mapped_coord.x,mapped_coord.y); float mag = joystick.get_mag(); float angle = joystick.get_angle(); printf("Mag = %f Angle = %f\n",mag,angle); Direction d = joystick.get_direction(); printf("Direction = %i\n",d); if (joystick.button_pressed() ) { printf("Button Pressed\n"); } wait(0.5); } } * @endcode */ class Joystick { public: // y-pot x-pot button Joystick(PinName vertPin,PinName horizPin,PinName clickPin); void init(); // needs to be called at start with joystick centred float get_mag(); // polar float get_angle(); // polar Vector2D get_coord(); // cartesian co-ordinates x,y Vector2D get_mapped_coord(); // x,y mapped to circle Direction get_direction(); // N,NE,E,SE etc. Polar get_polar(); // mag and angle in struct form bool button_pressed(); // read button flag set in ISR when button pressed private: AnalogIn *vert; AnalogIn *horiz; InterruptIn *click; int _click_flag; // flag set in ISR void click_isr(); // ISR on button press // centred x,y values float _x0; float _y0; }; #endif