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// 
// example 2: two tasks 
// descriptions: This example based on example 1, 
//				 two tasks do not communicate with each other and run independently.  
// author: Taiyun Wang  
// date: 2003/2/22 
/////////////////////////////////////////////////////////////////////////// 
 
 
#include "sposvar.h" 
#include "spos.h" 
 
int err;					//err No 
int t1stack[25];			//Task 1 stack 
int t2stack[25];			//Task 2 stack 
 
volatile unsigned int *P_IOA_BUFFER =(unsigned int*)(0x7001);   //Port A data register 
volatile unsigned int *P_IOA_DIR =(unsigned int*)(0x7002);      //Port A direction register 
volatile unsigned int *P_IOA_ATTRIB = (unsigned int*)(0x7003);  //Port A attribute register 
 
volatile unsigned int *P_IOB_BUFFER =(unsigned int*)(0x7006);	//Port B data register 
volatile unsigned int *P_IOB_DIR =(unsigned int*)(0x7007);		//Port B direction register 
volatile unsigned int *P_IOB_ATTRIB = (unsigned int*)(0x7008);	//Port B attribute register 
 
main() 
{ 
	void Task1();								 
	void Task2();								 
	SpSInit();									//Initialize OS kernel 
 
	*P_IOA_DIR = 0XFFFF;						//Set Port A output 
	*P_IOA_ATTRIB = 0XFFFF;						//Set Port A attribute 
 
	*P_IOB_DIR = 0XFFFF;                        //Set port B output 
	*P_IOB_ATTRIB = 0XFFFF;                     //Set port b attribute 
 
	err = SpSTaskCreate(Task1,0,t1stack+24,1);	//Create first task 
	err = SpSTaskCreate(Task2,0,t2stack+24,2);	//Create second task 
	SpSStart();									//Start kenel 
} 
void Task1()				//task 1 
{ 
	unsigned int i = 1; 
	while(1) { 
		*P_IOB_BUFFER = i; 
		i<<=1; 
		if(i == 0x0100) 
			i = 1; 
		SpSTimeDly(30);							//Delay 30 tick 
	} 
} 
void Task2()				//task 2 
{ 
	 
	unsigned int i=0; 
	while(1) { 
		*P_IOA_BUFFER = i; 
		i<<=1; 
		if(i == 0) 
			i = 1; 
		SpSTimeDly(5);							//Delay 5 tick 
	} 
}