C++玩状态机：跑马灯(1)

只看该作者 · 2011-10-10 20:13

本帖最后由 uc_cm0 于 2011-10-11 08:00 编辑

待续

只看该作者 · 2011-10-10 20:42

本帖最后由 uc_cm0 于 2011-10-11 09:49 编辑

硬件平台：菜农Cortex-M0助学板
编译器：IAR EWARM 6.21

//------------------------------------------------------------------
#include "proj_incs.h"
#include <iostream>

VSTATE_Declaration(VSTATE_1);    //声明一个状态VSTATE_1
VSTATE_Declaration(VSTATE_2);    //声明一个状态VSTATE_2
VSTATE_Declaration(VSTATE_3);    //声明一个状态VSTATE_3
VSTATE_Declaration(VSTATE_4);    //声明一个状态VSTATE_4

VSTATE_SCHED_Definition(VSTATE_SCHED); //定义一个状态机调度器VSTATE_SCHED(状态机定以后，初始处于空闲状态)

int main(void)
{
  DrvSYS_UnlockProtectedReg();       //时钟初始化
  DrvSYS_Open(48000000UL);
  DrvSYS_LockProtectedReg();

  GPIO_LED_1<<IO_OFF<<IO_MAKE_OUTPUT; //LED_1初始化
  GPIO_LED_2<<IO_OFF<<IO_MAKE_OUTPUT; //LED_2初始化
  GPIO_LED_3<<IO_OFF<<IO_MAKE_OUTPUT; //LED_3初始化
  GPIO_LED_4<<IO_OFF<<IO_MAKE_OUTPUT; //LED_4初始化

  SystemCoreClock=DrvSYS_GetHCLKFreq();
  SysTick_Config(SystemCoreClock/1000 ); //系统节拍初始化

  __enable_interrupt();                   //打开中断

  VSTATE_SCHED<<VSTATE_OBJECT(VSTATE_1); //设置状态机下一个状态为VSTATE_1

  while(1)
  {
VSTATE_SCHED.Do();                   //状态机VSTATE_SCHED调度循环
  }
}

//------------------------------------------------------------------
//VSTATE_1 实现
VSTATE_Implementation(VSTATE_1)
{
  //ENTER: LED_1亮，LED_4灭----------------------------
  if(this->GetEnterFlagAndClear())
  {
GPIO_LED_1<<IO_ON; //LED_1亮
GPIO_LED_4<<IO_OFF;  //LED_4灭

*this<<VSTATE_OBJECT(VSTATE_2)<<1000;
//设置状态机下一个状态为VSTATE_2,并延时1000ms
  }

  //Do:空-----------------------------------------------------------


  //EXIT:空---------------------------------------------------------
  return ;
}

//------------------------------------------------------------------
//VSTATE_2 实现
VSTATE_Implementation(VSTATE_2)
{
  //ENTER: LED_2亮，LED_1灭----------------------------
  if(this->GetEnterFlagAndClear())
  {
GPIO_LED_2<<IO_ON; //LED_2亮
GPIO_LED_1<<IO_OFF;  //LED_1灭

*this<<VSTATE_OBJECT(VSTATE_3)<<1000;
//设置状态机下一个状态为VSTATE_3,并延时1000ms
  }

  //Do: 空-----------------------------------------------------------


  //EXIT: 空---------------------------------------------------------
  return ;
}

//------------------------------------------------------------------
//VSTATE_3 实现
VSTATE_Implementation(VSTATE_3)
{
  //ENTER: LED_3亮，LED_2灭----------------------------
  if(this->GetEnterFlagAndClear())
  {
GPIO_LED_3<<IO_ON; //LED_3亮
GPIO_LED_2<<IO_OFF;  //LED_2灭

*this<<VSTATE_OBJECT(VSTATE_4)<<1000;
//设置状态机下一个状态为VSTATE_4，并延时1000ms
  }

  //Do: 空-----------------------------------------------------------


  //EXIT: 空---------------------------------------------------------
  return ;
}

//------------------------------------------------------------------
//VSTATE_4 实现
VSTATE_Implementation(VSTATE_4)
{
  //ENTER: LED_4亮，LED_3灭----------------------------
  if(this->GetEnterFlagAndClear())
  {
GPIO_LED_4<<IO_ON; //LED_4亮
GPIO_LED_3<<IO_OFF;  //LED_1灭

*this<<VSTATE_OBJECT(VSTATE_1)<<1000;
//设置状态机下一个状态为VSTATE_1,并延时1000ms
  }

  //Do: 空-----------------------------------------------------------


  //EXIT: 空---------------------------------------------------------
  return ;
}