app.c

uCos_II到ARM7的移植

/*
*********************************************************************************************************
*                                               uC/OS-II
*                                         The Real-Time Kernel
*
*                         (c) Copyright 1998-2003, Jean J. Labrosse, Weston, FL
*                                          All Rights Reserved
*
*
*                                          ARM Sample code
*
* File : app.c
*
* By   : Eric Shufro
*********************************************************************************************************
*/

#include    "includes.h"

/*
*********************************************************************************************************
*                                              CONSTANTS
*********************************************************************************************************
*/

const INT16U SEVSEG_PATTERN[16] = {0x003F, 0x0006, 0x005B, 0x004F,  /* 0, 1, 2, 3,  */
                                   0x0066, 0x006D, 0x007D, 0x0027,  /* 4, 5, 6, 7,  */
                                   0x007F, 0x006F, 0x0077, 0x007C,  /* 8, 9, A, b,  */
                                   0x0039, 0x005E, 0x0079, 0x0071}; /* C, d, E, F   */

const INT16U SEVSEG_WHEEL[6]    = {0x0001, 0x0002, 0x0004, 0x0008,  /* Wheel Effect */
                                   0x0010, 0x0020};

/*
*********************************************************************************************************
*                                                VARIABLES
*********************************************************************************************************
*/

OS_STK        AppStartTaskStk[TASK_STK_SIZE];
OS_STK        AppTask1Stk[TASK_STK_SIZE];
OS_STK        AppTask2Stk[TASK_STK_SIZE];


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

static  void  AppStartTask(void *p_arg);
static  void  AppTaskCreate(void);
static  void  AppTask1(void *p_arg);
static  void  AppTask2(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;


    BSP_Dis_Int();                          /* Disable interrupts                                      */

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

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

#if OS_TASK_NAME_SIZE > 15
    OSTaskNameSet(TASK_START_PRIO, "Start Task", &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 the ticker, and other BSP related functions  */

#if OS_TASK_STAT_EN > 0
    OSStatInit();
#endif

    AppTaskCreate();

    while (TRUE) {                          /* Task body, always written as an infinite loop.          */
        OSTimeDlyHMSM(0, 0, 5, 0);
    }
}

/*$PAGE*/
/*
*********************************************************************************************************
*                                     CREATE APPLICATION TASKS
*
* Description : none
* Arguments   : none
* Notes       : none
*********************************************************************************************************
*/
static  void  AppTaskCreate (void)
{
    INT8U  err;


    OSTaskCreateExt(AppTask1,
                    (void *)0,
                    (OS_STK *)&AppTask1Stk[TASK_STK_SIZE-1],
                    TASK_1_PRIO,
                    TASK_1_PRIO,
                    (OS_STK *)&AppTask1Stk[0],
                    TASK_STK_SIZE,
                    (void *)0,
                    OS_TASK_OPT_STK_CHK | OS_TASK_OPT_STK_CLR);
    OSTaskNameSet(TASK_1_PRIO, "Task #1", &err);

    OSTaskCreateExt(AppTask2,
                    (void *)0,
                    (OS_STK *)&AppTask2Stk[TASK_STK_SIZE-1],
                    TASK_2_PRIO,
                    TASK_2_PRIO,
                    (OS_STK *)&AppTask2Stk[0],
                    TASK_STK_SIZE,
                    (void *)0,
                    OS_TASK_OPT_STK_CHK | OS_TASK_OPT_STK_CLR);
    OSTaskNameSet(TASK_2_PRIO, "Task #2", &err);
}


/*$PAGE*/
/*
*********************************************************************************************************
*                                             TASK #1
*********************************************************************************************************
*/

static  void  AppTask1 (void *p_arg)
{
    while (TRUE) {
        LED_On(0);
        LED_On(1);
        LED_On(2);
        OSTimeDlyHMSM(0, 0, 0, 200);
        LED_Off(0);
        LED_Off(1);
        LED_Off(2);
        OSTimeDlyHMSM(0, 0, 0, 200);
    }
}

/*$PAGE*/
/*
*********************************************************************************************************
*                                             TASK #2
*********************************************************************************************************
*/

static  void  AppTask2 (void *p_arg)
{
    INT8U i;
    INT8U j;


    while (TRUE) {
        for (i = 0; i < 16; i++) {
            SevenSegment_Show(SEVSEG_PATTERN[i]);
            OSTimeDlyHMSM(0, 0, 0, 100);
        }

        for (i = 0; i < 2; i++) {
            for (j = 0; j < 6; j++) {
                SevenSegment_Show(SEVSEG_WHEEL[j]);
                OSTimeDlyHMSM(0, 0, 0, 100);
            }
        }
    }
}