wait.c

来自「无线龙ZigBee模块CC1010的接收－发送程序。」· C语言 代码 · 共 55 行

/*****************************************************************************
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 *      ***        ***                                                       *
 *      ***   +++   ***                                                      *
 *      ***   + +   ***                                                      *
 *      ***   +                            CHIPCON CC1010                    *
 *      ***   + +   ***                     HAL - Wait                       *
 *      ***   +++   ***                                                      *
 *      ***       ***                                                        *
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 * Author:              ROH                                                  *
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 * Revision history:                                                         *
 *                                                                           *
 * $Log: Wait.c,v $
 * Revision 1.1  2002/10/14 13:04:37  tos
 * Initial version in CVS.
 *
 *                                                                           *
 ****************************************************************************/

#include <chipcon/hal.h>


//----------------------------------------------------------------------------
//  byte* halWait(...)
//
//  Description:
//      A wait functions which performs a number of iterations of a simple
//      wait loop, so that at least _timeOut_ ms goes by before the
//      function returns.
//
//  Arguments:
//      byte timeOut
//          The time to wait in ms.
//      word clkFreq
//          The XOSC clock frequency in kHz.
//
//  Return value:
//      void
//----------------------------------------------------------------------------
void halWait(byte timeOut, word clkFreq) {
    ulong wait;
    
    wait=(ulong)timeOut*(ulong)clkFreq/192;
    while (wait--);
}