73 lines
1.8 KiB
C
73 lines
1.8 KiB
C
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#ifndef _JOYSTICK_H_
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#define _JOYSTICK_H_
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#include <Arduino.h>
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#include <stdint.h>
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#define BUTTON_STABLETIME 100
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#define JOYSTICK_STABLETIME 3000
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// Button states
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#define BUTTON_STATE_BOUNCING (1 << 0)
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#define BUTTON_STATE_DOWN (1 << 1)
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#define BUTTON_STATE_UP (1 << 2)
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#define BUTTON_STATE_HELD (1 << 3)
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// Joystick states
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#define JOYSTICK_STATE_CALIBRATING (1 << 0)
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#define JOYSTICK_STATE_CALIBRATED (1 << 1)
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#define JOYSTICK_STATE_READING (1 << 2)
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#define JOYSTICK_STATE_READY (1 << 3)
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typedef struct Calibration {
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// When did calibration start
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uint32_t start_time;
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// Low calibration range
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uint32_t low;
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// High calibration range
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uint32_t high;
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// How long we should sample values on this joystick
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uint32_t stable_time;
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} Calibration;
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typedef struct Button {
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// What pin is this button on
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uint8_t pin;
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// What is the state of this button (bitmask of BUTTON_STATE_*)
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uint8_t state;
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// Is this button pressed when it is LOW or HIGH?
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uint32_t pressedvalue;
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// How long do we wait when debouncing this button
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uint32_t debouncetime;
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// When did we start debouncing
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uint32_t debounce_start_time;
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} Button;
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typedef struct JoystickAxis {
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// What ADC pin is this joystick axis connected to
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uint8_t pin;
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// Calibration data
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Calibration calibration;
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// Position as of the last read time.
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uint32_t position;
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} JoystickAxis;
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typedef struct Joystick {
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// X axis data
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JoystickAxis x;
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// Y axis data
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JoystickAxis y;
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// This is the Z axis switch on the joystick control
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Button button;
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// What is the state of this joystick (bitmask of JOYSTICK_STATE_*)
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uint8_t state;
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} Joystick;
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int initJoystick(Joystick *js, uint8_t pin_x, uint8_t pin_y, uint8_t pin_z);
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int initButton(Button *button);
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int calibrateJoystick(Joystick *js);
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int readButton(Button *button);
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int readJoystick(Joystick *js);
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#endif // _JOYSTICK_H_
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