飞思卡尔S12单片机ECT模块使用实例

/** ###################################################################
** Filename : Project_2.c
** Project : Project_2
** Processor : MC9S12XEP100CAG
** Version : Driver 01.14
** Compiler : CodeWarrior HCS12X C Compiler
** Date/Time : 2014-5-21, 8:55
** Abstract :
** Main module.
** This module contains user's application code.
** Settings :
** Contents :
** No public methods
**
** ###################################################################*/
/* MODULE Project_2 */
/* Including needed modules to compile this module/procedure */
#include "Cpu.h"
#include "Events.h"
#include "Bit1.h"
#include "Bit2.h"
/* Include shared modules, which are used for whole project */
#include "PE_Types.h"
#include "PE_Error.h"
#include "PE_Const.h"
#include "IO_Map.h"
/* User includes (#include below this line is not maintained by Processor Expert) */
/************************************************************/
/* 初始化ECT模块*/
/************************************************************/
void initialize_ect(void){
//ECT_TSCR1_TFFCA = 1; // 定时器标志位快速清除
ECT_TSCR1_TEN = 1; // 定时器使能位. 1=允许定时器正常工作; 0=使主定时器不起作用(包括计数器)
ECT_TIOS = 0x03; //指定所有通道为输出比较方式
ECT_TCTL2_OM0 = 0; // 后四个通道设置为定时器与输出引脚断开
ECT_TCTL2_OL0 = 1; // 前四个通道设置为定时器与输出引脚断开
ECT_TCTL2_OM1 = 0; // 后四个通道设置为定时器与输出引脚断开
ECT_TCTL2_OL1 = 1; // 前四个通道设置为定时器与输出引脚断开
//ECT_DL YCT = 0x00; // 延迟控制功能禁止
// ECT_ICOVW = 0x00; // 对应的寄存器允许被覆盖; NOVWx = 1, 对应的寄存器不允许覆盖
// ECT_ICSYS = 0x00; // 禁止IC及PAC的保持寄存器
ECT_TIE = 0x00; // 禁止所有通道定时中断
ECT_TSCR2 = 0x04; // 预分频系数pr2-pr0:111,,时钟周期为4us,
ECT_TFLG1 = 0xff; // 清除各IC/OC中断标志位//定时器中断标志1 ECT_TFLG2 = 0xff; // 清除自由定时器中断标志位*/
// ECT_TC0 = 60000 ;
//ECT_TC1 = 10 ;
}
int x,y;
void main(void)
{
/* Write your local variable definition here */
/*** Processor Expert internal initialization. DON'T REMOVE THIS CODE!!! ***/
PE_low_level_init();
/*** End of Processor Expert internal initialization. ***/ initialize_ect();
/* Write your code here */
x=0;y=0;
for(;;)
{
ECT_TFLG1_C0F = 1; //清除标志位
ECT_TC0 = ECT_TCNT + 32767; //设置输出比较时间为0.125s
while(ECT_TFLG1_C0F == 0); //等待，直到发生输出比较事件
// ECT_TFLG1_C0F = 1; //清除标志位
// ECT_TC0 = ECT_TCNT + 31250; //设置输出比较时间为0.125s
// while(ECT_TFLG1_C0F == 0); //等待，直到发生输出比较事件
}
/*** Processor Expert end of main routine. DON'T MODIFY THIS CODE!!! ***/
for(;;){}
/*** Processor Expert end of main routine. DON'T WRITE CODE BELOW!!! ***/
} /*** End of main routine. DO NOT MODIFY THIS TEXT!!! ***/
/* END Project_2 */
/*
** ###################################################################
**
** This file was created by Processor Expert 3.02 [04.44]
** for the Freescale HCS12X series of microcontrollers.
**
** ###################################################################
*/。