39 lines
765 B
C
39 lines
765 B
C
#include "fifo.h"
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#ifndef _TIMER_H_
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#define _TIMER_H_
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#define PIT_CTRL 0x0043
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#define PIT_CNT0 0x0040
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#define TIMER_FLAGS_ALLOC 1 // 已配置状态
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#define TIMER_FLAGS_USING 2 // 定时器运行中
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#define MAX_TIMER 500
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struct Timer {
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struct Timer *next;
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unsigned int flags;
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unsigned int timeout;
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struct FIFO32 *fifo;
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int data;
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};
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struct TimerCtl {
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unsigned int count, next;
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struct Timer *t0;
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struct Timer timers0[MAX_TIMER];
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};
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extern struct TimerCtl timerctl;
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void init_pit(void);
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struct Timer *timer_alloc(void);
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void timer_free(struct Timer *timer);
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void timer_init(struct Timer *timer, struct FIFO32 *fifo, int data);
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void timer_set_timer(struct Timer *timer, unsigned int timeout);
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void int_handler20(int *esp);
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#endif // _TIMER_H_
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