main.c

来自「嵌入式系统设计与开发实例详解－－基于ARM的应用（采用ARM7TDMI内核的、三」· C语言 代码 · 共 114 行

#include	"ucos-ii/includes.h"               /* uC/OS interface */
#include    "uhal/uhal.h"
/********************************************/
//   ARMSYS实验十六：uC/OS-II基本应用 
//   描述：在操作系统基础上编写任务                   
/********************************************/
//task stack size
#ifdef SEMIHOSTED
	#define	TASK_STACK_SIZE	(64+SEMIHOSTED_STACK_NEEDS)
#else
	#define		TASK_STACK_SIZE	10*1024
#endif

//Task definition

//Main Task
OS_STK Main_Stack[TASK_STACK_SIZE]= {0, };
void Main_Task(void *Id);
#define Main_PRIO       10

//Task1
OS_STK Task1_Stack[TASK_STACK_SIZE]= {0, };
void Task1_Task(void *Id);
#define Task1_PRIO       12

//Task2
OS_STK Task2_Stack[TASK_STACK_SIZE]= {0, };
void Task2_Task(void *Id);
#define Task2_PRIO       14

//Task3
OS_STK Task3_Stack[TASK_STACK_SIZE]= {0, };
void Task3_Task(void *Id);
#define Task3_PRIO       16


void Task1_Task(void *Id)
{
	int i;

	while(1)
	{
		i++;
		OS_ENTER_CRITICAL();
	    uHALr_printf(" Task1\n");
	    OS_EXIT_CRITICAL();
		OSTimeDly(1000);
	}
}
void Task2_Task(void *Id)
{
	int i;

	while(1)
	{
		i++;
		OS_ENTER_CRITICAL();
	    uHALr_printf("             Task2\n");
	    OS_EXIT_CRITICAL();
		OSTimeDly(2000);
	}
}
void Task3_Task(void *Id)
{
	int i;

	while(1)
	{
		i++;
		OS_ENTER_CRITICAL();
    	uHALr_printf("                           Task3\n");
    	OS_EXIT_CRITICAL();
		OSTimeDly(3000);
	}
}
void Main_Task(void *Id)
{
	//OSStatInit();
	
	/* Start the S3C44B0X BSP Running */
	ARMTargetStart();
	
	OSTaskCreate(Task1_Task, (void *)0, (OS_STK *)&Task1_Stack[TASK_STACK_SIZE-1],  Task1_PRIO);
  	OSTaskCreate(Task2_Task, (void *)0, (OS_STK *)&Task2_Stack[TASK_STACK_SIZE-1],  Task2_PRIO);
  	OSTaskCreate(Task3_Task, (void *)0, (OS_STK *)&Task3_Stack[TASK_STACK_SIZE-1],  Task3_PRIO);
	while (1)
	{
		OSTimeDly(40);
	}
}	





int Main()
{
	ARMTargetInit();//initialize Target
	
	// Init uCOS-II
	OSInit();

	//Create the Main Task
	OSTaskCreate(Main_Task, (void *)0, (OS_STK *)&Main_Stack[TASK_STACK_SIZE-1],  Main_PRIO);
    
	

	/* Start uCOS-II */
	OSStart();
	return 0;
}