71 lines
1.2 KiB
C
71 lines
1.2 KiB
C
#include <keyboard.h>
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#include <timer.h>
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#include <mpu.h>
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#include <clock.h>
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#include <internals/keyboard.h>
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//---
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// Keyboard variables.
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//---
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// These ones get modified by interrupts.
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volatile unsigned char keyboard_state[10] = { 0 };
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volatile int interrupt_flag = 0;
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// Key statistics.
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int repeat_first = 10, repeat_next = 2;
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int last_key = KEY_NONE, last_repeats = 0, last_events = 0;
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// RTC callback id.
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unsigned cb_id;
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//---
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// Interrupt management.
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//---
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/*
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keyboard_interrupt()
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Callback for keyboard update. Allows keyboard analysis functions to
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wake only when keyboard interrupts happen.
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*/
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void keyboard_interrupt(void)
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{
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if(isSH3())
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keyboard_updateState_7705(keyboard_state);
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else
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keyboard_updateState_7305(keyboard_state);
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interrupt_flag = 1;
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}
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/*
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keyboard_init()
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Starts the keyboard timer.
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*/
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void keyboard_init(void)
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{
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cb_id = rtc_cb_add(RTCFreq_16Hz, keyboard_interrupt, 0);
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}
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/*
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keyboard_setFrequency()
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Sets the keyboard frequency.
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*/
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void keyboard_setFrequency(enum KeyboardFrequency frequency)
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{
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if(frequency < 1 || frequency > 7) return;
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rtc_cb_edit(cb_id, frequency, keyboard_interrupt);
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}
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/*
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keyboard_quit()
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Stops the keyboard timer.
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*/
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void keyboard_quit(void)
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{
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rtc_cb_end(cb_id);
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}
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