rti.c

ABS防抱死功能

#include <mc9s12dg128.h>     /* derivative information */
#include "ECT.h"
#include "AD.h"
#include "RTI.h"

extern byte Timer1ms_Flag;

//*****************************************************
//* 晶振频率=OSCCLK;	 16MHz
//* RTICTL RTR[6:4] = 100 预分频系数为2的13次
//* RTICTL RTR[3:0] = 0001 计数器为2
//* 溢出中断时间为 2*8*1024/16000000 = 1.024ms
//* 
//*******************************************************/
void RTI_Init(void)
{
  RTICTL = 0x41;					// 实时中断溢出时间1.024ms（系统晶振16MHZ） 
  CRGINT_RTIE=1;					// 实时中断使能 
}

#pragma CODE_SEG NON_BANKED
interrupt void RTI_ISR(void)
{
  CRGFLG_RTIF = 1; //中断标志位清零
  Timer1ms_Flag = 1; 
}

#pragma CODE_SEG DEFAULT