watch.c

这个是基于ARM7的相关驱动代码

/*
********************************************************************************
*                    Copyright (c) 2004, Comba Telecom System
*                             All Rights Reserved
*
* File Name         : watch.c
* Purpose           : 钟表定时处理

* Revision history  
------------------
    V1.0,2004/06/22,Ldn   创建
********************************************************************************
*/

/* includes */
#define _WATCH_VAR_EXT
#include "config.h"

///设定超时时间
void watchReset(WATCH *pWatch) 
{
    pWatch->bOn         = FALSE;
    pWatch->bOver       = FALSE;
    pWatch->hour        = 0;
    pWatch->min         = 0;
    pWatch->second      = 0;
    pWatch->ms          = 0;
    pWatch->needTicks   = 0;
    pWatch->startTicks  = OSTimeGet();                        
}

///设定超时时间
void watchSetTimeout(WATCH *pWatch, INT8U hour, INT8U min, INT8U second, INT8U ms)
{
    pWatch->bOn         = TRUE;
    pWatch->bOver       = FALSE;
    pWatch->hour        = hour;
    pWatch->min         = min;
    pWatch->second      = second;
    pWatch->ms          = ms;
    pWatch->needTicks   = (  (INT32U)pWatch->hour * 3600L 
                           + (INT32U)pWatch->min * 60L
                           + (INT32U)pWatch->second   ) * OS_TICKS_PER_SEC
                           + OS_TICKS_PER_SEC * ( (INT32U) pWatch->ms + 500L / OS_TICKS_PER_SEC) / 1000L;
    pWatch->startTicks  = OSTimeGet();                        
}

//钟表时间计数
void watchRun(WATCH *pWatch) 
{
    
    INT32U  nowTicks;
    
    if ( pWatch->bOn && (! pWatch->bOver ) )
    { 
        nowTicks    =     OSTimeGet();
        
        if (nowTicks >= pWatch->startTicks )
        {
            if (nowTicks - pWatch->startTicks >=  pWatch->needTicks)
            {
                //超时发生
                pWatch->bOver = TRUE;
            }
        }
        else
        {
            if (nowTicks +  (~ pWatch->startTicks) >=  pWatch->needTicks)
            {
                //超时发生
                pWatch->bOver = TRUE;
            }
        }
    }
}