app.c

uc/OS ii 2.80在lpc22xx移植 支持255个任务

/*
*********************************************************************************************************
*                                               uC/OS-II
*                                         The Real-Time Kernel
*
*                             (c) Copyright 1998-2004, Micrium, Weston, FL
*                                          All Rights Reserved
*
*
*                                            ARM Sample code
*
* File : APP.C
* By   : Jean J. Labrosse
*********************************************************************************************************
*/

#include <includes.h>


// P0.7为蜂鸣器的控制I/O
#define   BEEP          (1<<7)

// LED控制宏函数定义。LED1--LED4的控制I/O为P2.28--P2.31
#define   LED_ADJ	        28U
#define   LED_IOCON	        (0xFF<<LED_ADJ)
#define   LED_OFF() 	        IO2SET=LED_IOCON
#define   LED_DISP(dat) 	LED_OFF(); IO2CLR=((dat)<<LED_ADJ)


#define	TaskStkLengh	64			//定义用户任务堆栈长度

OS_STK	TaskStk0[TaskStkLengh];		//Define the Task0 stack 定义用户任务0的堆栈
OS_STK	TaskStk1[TaskStkLengh];		//Define the Task1 stack 定义用户任务1的堆栈

void 	Task0(void *pdata);			//Task0 任务0
void 	Task1(void *pdata);			//Task0 任务1
/*
*********************************************************************************************************
*                                                VARIABLES
*********************************************************************************************************
*/

OS_STK        AppStartTaskStk[APP_TASK_STK_SIZE];

/*
*********************************************************************************************************
*                                            FUNCTION PROTOTYPES
*********************************************************************************************************
*/

static  void  AppStartTask(void *p_arg);

/*
*********************************************************************************************************
*                                                main()
*
* Description : This is the standard entry point for C code.  It is assumed that your code will call
*               main() once you have performed all necessary 68HC12 and C initialization.
* Arguments   : none
*********************************************************************************************************
*/

void  main (void)
{
    INT8U  err;


    OSInit();                               /* Initialize "uC/OS-II, The Real-Time Kernel"             */

    OSTaskCreateExt(AppStartTask,
                    (void *)0,
                    (OS_STK *)&AppStartTaskStk[APP_TASK_STK_SIZE - 1],
                    APP_TASK_START_PRIO,
                    APP_TASK_START_PRIO,
                    (OS_STK *)&AppStartTaskStk[0],
                    APP_TASK_STK_SIZE,
                    (void *)0,
                    OS_TASK_OPT_STK_CHK | OS_TASK_OPT_STK_CLR);

#if OS_TASK_NAME_SIZE > 11
    OSTaskNameSet(APP_TASK_START_PRIO, "Start Task", &err);
#endif

#if OS_TASK_NAME_SIZE > 14
    OSTaskNameSet(OS_IDLE_PRIO, "uC/OS-II Idle", &err);
#endif

#if (OS_TASK_NAME_SIZE > 14) && (OS_TASK_STAT_EN > 0)
    OSTaskNameSet(OS_STAT_PRIO, "uC/OS-II Stat", &err);
#endif

    OSStart();                              /* Start multitasking (i.e. give control to uC/OS-II)      */
}
/*$PAGE*/
/*
*********************************************************************************************************
*                                          STARTUP TASK
*
* Description : This is an example of a startup task.  As mentioned in the book's text, you MUST
*               initialize the ticker only once multitasking has started.
* Arguments   : p_arg   is the argument passed to 'AppStartTask()' by 'OSTaskCreate()'.
* Notes       : 1) The first line of code is used to prevent a compiler warning because 'p_arg' is not
*                  used.  The compiler should not generate any code for this statement.
*               2) Interrupts are enabled once the task start because the I-bit of the CCR register was
*                  set to 0 by 'OSTaskCreate()'.
*********************************************************************************************************
*/

static  void  AppStartTask (void *p_arg)
{
    (void)p_arg;

    BSP_Init();                             /* Initialize BSP functions                                */
    OSTaskCreate (Task0,(void *)0, &TaskStk0[TaskStkLengh - 1], 2);
#if OS_TASK_STAT_EN > 0
    OSStatInit();                           /* Determine CPU capacity                                  */
#endif
    while(1)
    {

       OSTimeDly(OS_TICKS_PER_SEC/2);

    }
}

/*********************************************************************************************************
**                            Task0 任务0
********************************************************************************************************/
void Task0(void *pdata)
{   const INT8U  DISP_TAB[24] = { 0x0F,0x00,0x0F,0x00,0x0F,0x00,0x0F,0x00,
                                 0x01,0x02,0x04,0x08,0x04,0x02,0x01,0x00,
                                 0x05,0x0A,0x05,0x0A,0x05,0x0A,0x05,0x00 };
    INT8U  i;
    pdata = pdata;
    PINSEL0 = 0x00000000;		// 设置P0口管脚连接GPIO
    IO0DIR = BEEP;	                // 设置蜂鸣器控制口为输出
    IO0SET = BEEP;
    IO2DIR = LED_IOCON;                 // 设置LED1--LED4的控制口为输出
    LED_OFF();

        // 建立任务1(用于蜂鸣器控制)
	OSTaskCreate (Task1,(void *)0, &TaskStk1[TaskStkLengh - 1], 3);	
	
	while (1)
	{   for(i=0; i<24; i++)
        {   LED_DISP(DISP_TAB[i]);          // 输出LED显示数据
            OSTimeDly(OS_TICKS_PER_SEC/2);	// 延时0.5S
        } 		
	}
}

/*********************************************************************************************************
**                            Task1 任务1
********************************************************************************************************/
void Task1(void *pdata)
{
	pdata = pdata;
	
	while (1)
	{   OSTimeDly(OS_TICKS_PER_SEC*10);     // 延时10S
	
	    IO0CLR = BEEP;                      // 控制蜂鸣器响
        OSTimeDly(OS_TICKS_PER_SEC/2);			
        IO0SET = BEEP;
	}
}

/*********************************************************************************************************
**                            End Of File
********************************************************************************************************/