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.

**

** ###################################################################

*/