settimer3period.c

来自「SOS操作系统用于无线传感器网络节点的源代码」· C语言 代码 · 共 44 行

/******************************************************************************
*                                                                             *
*        **********                                                           *
*       ************                                                          *
*      ***        ***                                                         *
*     ***    ++    ***                                                        *
*     ***   +  +   ***                      CHIPCON                           *
*     ***   +                                                                 *
*     ***   +  +   ***                                                        *
*     ***    ++    ***                                                        *
*      ***        ***                                                         *
*       ************                                                          *
*        **********                                                           *
*                                                                             *
*******************************************************************************

Filename:     setTimer3Period.c
Target:       cc2430
Author:       EFU
Revised:      16/12-2005
Revision:     1.0
******************************************************************************/
#include "hal.h"


//-----------------------------------------------------------------------------
// See hal.h for a description of this function.
//-----------------------------------------------------------------------------
WORD halSetTimer3Period( period){

   BYTE div = 0;
   BYTE interval;
   if(val > 250) {interval = 250;}
	else if(val <= 2) {interval = 2;}
	else {interval = (uint8_t)val - 1;}


       // Timer 3 selected
       T3CTL |= (div << 5);              // Setting prescaler value
       T3CC0 = (BYTE) period;            // Setting timer value.


        return period;
}