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Diffstat (limited to 'quantum/joystick.h')
-rw-r--r-- | quantum/joystick.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/quantum/joystick.h b/quantum/joystick.h new file mode 100644 index 000000000..a95472b9f --- /dev/null +++ b/quantum/joystick.h @@ -0,0 +1,54 @@ +#pragma once + +#ifndef JOYSTICK_BUTTON_COUNT +# define JOYSTICK_BUTTON_COUNT 8 +#endif + +#ifndef JOYSTICK_AXES_COUNT +# define JOYSTICK_AXES_COUNT 4 +#endif + +#include "quantum.h" + +#include <stdint.h> + +// 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 / 8 + 1]; + + int16_t axes[JOYSTICK_AXES_COUNT]; + uint8_t status : 2; +} joystick_t; + +extern joystick_t joystick_status; + +// to be implemented in the hid protocol library +void send_joystick_packet(joystick_t *joystick); |