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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [itron/] [include/] [itronsys/] [time.h] - Blame information for rev 30

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/*
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 *  COPYRIGHT (c) 1989-1999.
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 *  On-Line Applications Research Corporation (OAR).
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 *
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 *  The license and distribution terms for this file may be
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 *  found in the file LICENSE in this distribution or at
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 *  http://www.OARcorp.com/rtems/license.html.
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 *
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 *  $Id: time.h,v 1.2 2001-09-27 11:59:12 chris Exp $
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 */
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#ifndef __ITRON_TIME_h_
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#define __ITRON_TIME_h_
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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 *  System Time Data Type
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 *
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 *  Member configuration depends on the bit width of the processor and
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 *  on the implementation.  A total of 48 bits is recommended.
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 *
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 */
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typedef struct t_systime {
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  H    utime;   /* upper 16 bits */
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  UW   ltime;   /* lower 32 bits */
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} SYSTIME, CYCTIME, ALMTIME;
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/*
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 *  XXX Look this up in the spec and figure out where it comes
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 *  XXX from.  dly_tim() references it but it was left out
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 *  XXX of the initial cut at the header files.
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 */
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typedef int DLYTIME;
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/*
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 *  XXX (def_cyc) Structure
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 */
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typedef struct t_dcyc {
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  VP        exinf;    /* extended information */
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  ATR       cycatr;   /* cyclic handler attributes */
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  FP        cychdr;   /* cyclic handler address */
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  UINT      cycact;   /* cyclic handler activation */
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  CYCTIME   cyctim;   /* cyclic startup period */
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} T_DCYC;
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/*
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 *  cycact
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 */
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#define TCY_OFF   0x00   /* do not invoke cyclic handler */
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#define TCY_ON    0x01   /* invoke cyclic handler */
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#define TCY_INT   0x02   /* initialize cycle count */
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/*
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 *  Reference Cyclic Handler (ref_cyc) Structure
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 */
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typedef struct t_rcyc {
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  VP        exinf;    /* extended information */
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  CYCTIME   lfttim;   /* time left before next handler startup */
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  UINT      cycact;   /* cyclic handler activation */
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  /* additional information may be included depending on the implementation */
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} T_RCYC;
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/*
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 *  Define Alarm (def_alm) Structure
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 */
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typedef struct t_dalm {
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  VP        exinf;    /* extended information */
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  ATR       almatr;   /* alarm handler attributes */
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  FP        almhdr;   /* alarm handler address */
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  UINT      tmmode;   /* start time specification mode */
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  ALMTIME   almtim;   /* handler startup time */
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} T_DALM;
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/*
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 *  tmmode
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 */
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#define TTM_ABS   0x00   /* specified as an absolute time */
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#define TTM_REL   0x01   /* specified as a relative time */
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/*
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 *  Reference Alarm (ref_alm) Structure
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 */
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typedef struct t_ralm {
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  VP        exinf;    /* extended information */
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  ALMTIME   lfttim;   /* time left before next handler startup */
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  /* additional information may be included depending on the implementation */
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} T_RALM;
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/*
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 *  Time Management Functions
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 */
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/*
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 *  set_tim - Set System Clock
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 */
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ER set_tim(
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  SYSTIME *pk_tim
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);
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/*
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 *  get_tim - Get System Clock
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 */
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ER get_tim(
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  SYSTIME *pk_tim
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);
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/*
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 *  dly_tsk - Delay Task
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 */
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ER dly_tsk(
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  DLYTIME dlytim
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);
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/*
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 *  def_cyc - Define Cyclic Handler
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 */
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ER def_cyc(
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  HNO cycno,
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  T_DCYC *pk_dcyc
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);
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/*
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 *  act_cyc - Activate Cyclic Handler
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 */
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ER act_cyc(
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  HNO cycno,
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  UINT cycact
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);
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/*
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 *  ref_cyc - Reference Cyclic Handler Status
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 */
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ER ref_cyc(
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  T_RCYC *pk_rcyc,
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  HNO cycno
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);
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/*
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 *  def_alm - Define Alarm Handler
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 */
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ER def_alm(
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  HNO almno,
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  T_DALM *pk_dalm
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);
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/*
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 *  ref_alm - Reference Alarm Handler Status
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 */
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ER ref_alm(
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  T_RALM *pk_ralm,
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  HNO almno
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);
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/*
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 *  ret_tmr - Return from Timer Handler
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 */
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void ret_tmr( void );
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#ifdef __cplusplus
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}
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#endif
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#endif
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/* end of include file */
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