49 lines
926 B
C
49 lines
926 B
C
#ifndef _INTERNALS_TIMER_H
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#define _INTERNALS_TIMER_H 1
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/*
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struct Timer
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This structure holds information for a running timer.
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*/
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struct Timer
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{
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void (*callback)(void);
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int repeats;
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};
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extern struct Timer timers[3];
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/*
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struct mod_tmu
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This structure holds information about the timer unit (peripheral
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module) registers.
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*/
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struct mod_tmu
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{
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unsigned int TCOR; // Timer constant register.
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unsigned int TCNT; // Timer counter.
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union
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{
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unsigned short WORD;
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struct
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{
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unsigned :7;
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unsigned UNF :1; // Underflow flag.
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unsigned :2;
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unsigned UNIE :1; // Underflow interrupt enable.
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unsigned CKEG :2; // Clock edge (SH7705 only).
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unsigned TPSC :3; // Timer prescaler.
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};
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} TCR; // Timer control register.
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};
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/*
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timer_get()
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Returns the timer and TSTR register addresses.
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*/
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void timer_get(int timer, volatile struct mod_tmu **tmu,
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volatile unsigned char **tstr);
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#endif // _INTERNALS_TIMER_H
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