main.c

《增强型8051单片机实用开发技术》例程代码

/* 本例程uCOS-II 版本为2.51*/  

#include "includes.h"

sbit LED1=P1^3;
sbit LED2=P1^7;

OS_STK Task1Stk[MaxStkSize+1];
OS_STK Task2Stk[MaxStkSize+1];
OS_STK Task3Stk[MaxStkSize+1];

OS_EVENT* FirstSem;
INT8U err;

void Task1(void *ppdata) reentrant
{
	ppdata=ppdata;
	ET0=1;       //开时钟节拍中断-------根据杨屹文章更改
	for(;;)
    {
		LED1=~LED1;
        OSTimeDly(OS_TICKS_PER_SEC/2);
		OSSemPost(FirstSem);	
    }    
}

void Task2(void *ppdata) reentrant
{
	ppdata=ppdata;
	for(;;)
    {
	    OSSemPend(FirstSem,0,&err);
		LED2=~LED2;
    }    
}

void Task3(void *ppdata) reentrant
{
	ppdata=ppdata;
	for(;;)
    {
		OSTimeDlyHMSM(0,0,10,0);
		PCA_PWM0=0x00;
		CCAP0H=0x40;
		OSTimeDly(OS_TICKS_PER_SEC/4);
		PCA_PWM0=0x03;
    }    
}

void main(void)
{
	OSInit();
	InitHardware();
	FirstSem=OSSemCreate(0);//定义一个信号量

	OSTaskCreate(Task1,(void*)0,&Task1Stk[0],0);
	OSTaskCreate(Task2,(void*)0,&Task2Stk[0],1);
	OSTaskCreate(Task3,(void*)0,&Task3Stk[0],2);

	OSStart();
}