50 lines
1.4 KiB
C
50 lines
1.4 KiB
C
#ifndef _INTERNALS_KEYBOARD_H
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#define _INTERNALS_KEYBOARD_H
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#include <keyboard.h>
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#include <timer.h>
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#include <clock.h>
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// Current keyboard state and keyboard interrupt flag.
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extern volatile uint8_t keyboard_state[10];
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extern volatile int interrupt_flag;
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// Delays (milliseconds) before repetitions, last key pressed, how many times
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// it has been repeated already, time elapsed since last repetition (ms).
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extern int repeat_first, repeat_next;
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extern int last_key, last_repeats, last_time;
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// Virtual timer object.
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extern timer_t *vtimer;
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/*
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getPressedKey()
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Finds a pressed key in the keyboard state and returns it.
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*/
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int getPressedKey(volatile uint8_t *keyboard_state);
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/*
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getPressedKeys()
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Find 'count' pressed keys in the keyboard state and fills the 'keys'
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array. Returns the number of keys found.
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WARNING: keyboard artifacts make this function read as pressed keys
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that aren't (typically, LEFT + DOWN + SHIFT => ALPHA).
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*/
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int getPressedKeys(volatile uint8_t *keyboard_state, int *keys, int count);
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/*
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keyboard_updateState()
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Updates the keyboard state.
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*/
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void keyboard_updateState_7705(volatile uint8_t *state);
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void keyboard_updateState_7305(volatile uint8_t *state);
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/*
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keyboard_interrupt()
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Answers an interrupt event by updating the keyboard state and
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generating the associated keyboard events.
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*/
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void keyboard_interrupt(void);
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#endif // _INTERNALS_KEYBOARD_H
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