55 lines
928 B
C
55 lines
928 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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// Timer constant register.
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unsigned int TCOR;
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// Timer counter.
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unsigned int TCNT;
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// Timer control register.
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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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// Underflow flag.
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unsigned UNF :1;
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unsigned :2;
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// Underflow interrupt enable.
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unsigned UNIE :1;
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// Clock edge, reserved on SH7305.
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unsigned CKEG :2;
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// Timer prescaler.
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unsigned TPSC :3;
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};
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} TCR;
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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, struct mod_tmu **tmu, unsigned char **tstr);
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#endif // _INTERNALS_TIMER_H
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