forked from forks/qmk_firmware
72 lines
2.1 KiB
C
72 lines
2.1 KiB
C
#pragma once
|
|
|
|
#include <stdint.h>
|
|
#include "gpio.h"
|
|
|
|
#ifndef JOYSTICK_BUTTON_COUNT
|
|
# define JOYSTICK_BUTTON_COUNT 8
|
|
#elif JOYSTICK_BUTTON_COUNT > 32
|
|
# error Joystick feature only supports up to 32 buttons
|
|
#endif
|
|
|
|
#ifndef JOYSTICK_AXES_COUNT
|
|
# define JOYSTICK_AXES_COUNT 4
|
|
#elif JOYSTICK_AXES_COUNT > 6
|
|
# error Joystick feature only supports up to 6 axes
|
|
#endif
|
|
|
|
#if JOYSTICK_AXES_COUNT == 0 && JOYSTICK_BUTTON_COUNT == 0
|
|
# error Joystick feature requires at least one axis or button
|
|
#endif
|
|
|
|
#ifndef JOYSTICK_AXES_RESOLUTION
|
|
# define JOYSTICK_AXES_RESOLUTION 8
|
|
#elif JOYSTICK_AXES_RESOLUTION < 8 || JOYSTICK_AXES_RESOLUTION > 16
|
|
# error JOYSTICK_AXES_RESOLUTION must be between 8 and 16
|
|
#endif
|
|
|
|
#define JOYSTICK_RESOLUTION ((1L << (JOYSTICK_AXES_RESOLUTION - 1)) - 1)
|
|
|
|
// configure on input_pin of the joystick_axes array entry to JS_VIRTUAL_AXIS
|
|
// to prevent it from being read from the ADC. This allows outputing forged axis value.
|
|
//
|
|
#define JS_VIRTUAL_AXIS 0xFF
|
|
|
|
#define JOYSTICK_AXIS_VIRTUAL \
|
|
{ JS_VIRTUAL_AXIS, JS_VIRTUAL_AXIS, JS_VIRTUAL_AXIS, 0, 1023 }
|
|
#define JOYSTICK_AXIS_IN(INPUT_PIN, LOW, REST, HIGH) \
|
|
{ JS_VIRTUAL_AXIS, INPUT_PIN, JS_VIRTUAL_AXIS, LOW, REST, HIGH }
|
|
#define JOYSTICK_AXIS_IN_OUT(INPUT_PIN, OUTPUT_PIN, LOW, REST, HIGH) \
|
|
{ OUTPUT_PIN, INPUT_PIN, JS_VIRTUAL_AXIS, LOW, REST, HIGH }
|
|
#define JOYSTICK_AXIS_IN_OUT_GROUND(INPUT_PIN, OUTPUT_PIN, GROUND_PIN, LOW, REST, HIGH) \
|
|
{ OUTPUT_PIN, INPUT_PIN, GROUND_PIN, LOW, REST, HIGH }
|
|
|
|
typedef struct {
|
|
pin_t output_pin;
|
|
pin_t input_pin;
|
|
pin_t ground_pin;
|
|
|
|
// the AVR ADC offers 10 bit precision, with significant bits on the higher part
|
|
uint16_t min_digit;
|
|
uint16_t mid_digit;
|
|
uint16_t max_digit;
|
|
} joystick_config_t;
|
|
|
|
extern joystick_config_t joystick_axes[JOYSTICK_AXES_COUNT];
|
|
|
|
enum joystick_status { JS_INITIALIZED = 1, JS_UPDATED = 2 };
|
|
|
|
typedef struct {
|
|
uint8_t buttons[(JOYSTICK_BUTTON_COUNT - 1) / 8 + 1];
|
|
|
|
int16_t axes[JOYSTICK_AXES_COUNT];
|
|
uint8_t status : 2;
|
|
} joystick_t;
|
|
|
|
extern joystick_t joystick_status;
|
|
|
|
void joystick_flush(void);
|
|
|
|
void register_joystick_button(uint8_t button);
|
|
void unregister_joystick_button(uint8_t button);
|