app.c

uCOS-II example for MC9S12DPxxx

/*
*********************************************************************************************************
*                                               uC/OS-II
*                                         The Real-Time Kernel
*
*                         (c) Copyright 1998-2003, Jean J. Labrosse, Weston, FL
*                                          All Rights Reserved
*
*                                          Sample code
*                                          MC9S12DP256B 
*                                       Wytec Dragon12 EVB
*
* File : app.c
* By   : Eric Shufro
*********************************************************************************************************
*/

#include    <includes.h>


/*
*********************************************************************************************************
*                                                DEFINES
*********************************************************************************************************
*/


/*
*********************************************************************************************************
*                                                CONSTANTS
*********************************************************************************************************
*/
   
   
/*
*********************************************************************************************************
*                                                VARIABLES
*********************************************************************************************************
*/

    OS_STK        AppStartTaskStk[APP_TASK_START_STK_SIZE];
    OS_STK        LCD_TestTaskStk[LCD_TASK_STK_SIZE];
    OS_STK        SevenSegTestTaskStk[SEVEN_SEG_TEST_TASK_STK_SIZE];
    OS_STK        KeypadRdTaskStk[KEYPAD_RD_TASK_STK_SIZE];    
    			 
    OS_FLAG_GRP  *keypadEnFlagGrp;    


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

static  void  AppStartTask(void *p_arg);
static  void  AppTaskCreate(void);
static  void  LCD_TestTask(void *p_arg);
static  void  SevenSegTestTask(void *p_arg);
static  void  KeypadRdTask(void *p_arg);


#if (uC_PROBE_OS_PLUGIN > 0) || (uC_PROBE_COM_MODULE > 0)
extern  void  AppProbeInit(void);
#endif


/*
*********************************************************************************************************
*                                                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_START_STK_SIZE - 1],
                    APP_TASK_START_PRIO,
                    APP_TASK_START_PRIO,
                    (OS_STK *)&AppStartTaskStk[0],
                    APP_TASK_START_STK_SIZE,
                    (void *)0,
                    OS_TASK_OPT_STK_CHK | OS_TASK_OPT_STK_CLR);

    OSTaskNameSet(APP_TASK_START_PRIO, "Start Task", &err);

    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()'.
*				3) After this created from main(), it runs and initializes additional application
*                  modules and tasks. Rather than deleting the task, it is simply suspended
*                  periodically. This tasks body could be used for additional work if desired.
*********************************************************************************************************
*/

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();                                                       /* Start stats task                                         */
#endif

#if (uC_PROBE_OS_PLUGIN > 0) || (uC_PROBE_COM_MODULE > 0)
    AppProbeInit();                                                     /* Initialize uC/Probe modules                              */
#endif
    
    AppTaskCreate();                                                    /* Create additional tasks using this user defined function */
    
    while (TRUE) {                                                      /* Task body, always written as an infinite loop            */
        OSTimeDlyHMSM(0, 0, 5, 0);                                      /* Delay the task                                           */
    }
}


/*$PAGE*/
/*
*********************************************************************************************************
*                                     CREATE APPLICATION TASKS
*
* Description : This function demonstrates how to create a new application task. 
* 
* Notes:        1) Each task should be a unique function prototypes as 
*                  static  void  mytaskname (void *p_arg). 
*               2) Additionally, each task should contain an infinite loop and call at least one
*                  OS resource on each pass of the loop. An OS resource may be a call to OSTimeDly(),
*                  OSTimeDlyHMSM(), or one of the message box, semaphore or other OS handled resource.
*               3) Each task must have its own stack. Be sure that the stack is declared large
*                  enough or the entire system may crash or experience erradic results if your stack
*                  grows and overwrites other variables in memory.
*               
* Arguments   : none
* Notes       : none
*********************************************************************************************************
*/

static  void  AppTaskCreate (void)
{
    INT8U  err;

    
    OSTaskCreateExt(LCD_TestTask,
                    (void *)0,
                    (OS_STK *)&LCD_TestTaskStk[LCD_TASK_STK_SIZE-1],
                    LCD_TEST_TASK_PRIO,
                    LCD_TEST_TASK_PRIO,
                    (OS_STK *)&LCD_TestTaskStk[0],
                    LCD_TASK_STK_SIZE,
                    (void *)0,
                    OS_TASK_OPT_STK_CHK | OS_TASK_OPT_STK_CLR);
    OSTaskNameSet(LCD_TEST_TASK_PRIO, "LCD Test Task", &err);    

    OSTaskCreateExt(SevenSegTestTask,
                    (void *)0,
                    (OS_STK *)&SevenSegTestTaskStk[SEVEN_SEG_TEST_TASK_STK_SIZE-1],
                    SEVEN_SEG_TEST_TASK_PRIO,
                    SEVEN_SEG_TEST_TASK_PRIO,
                    (OS_STK *)&SevenSegTestTaskStk[0],
                    SEVEN_SEG_TEST_TASK_STK_SIZE,
                    (void *)0,
                    OS_TASK_OPT_STK_CHK | OS_TASK_OPT_STK_CLR);
    OSTaskNameSet(SEVEN_SEG_TEST_TASK_PRIO, "SevenSegTest Task", &err);          

    OSTaskCreateExt(KeypadRdTask,
                    (void *)0,
                    (OS_STK *)&KeypadRdTaskStk[KEYPAD_RD_TASK_STK_SIZE-1],
                    KEYPAD_RD_TASK_PRIO,
                    KEYPAD_RD_TASK_PRIO,
                    (OS_STK *)&KeypadRdTaskStk[0],
                    KEYPAD_RD_TASK_STK_SIZE,
                    (void *)0,
                    OS_TASK_OPT_STK_CHK | OS_TASK_OPT_STK_CLR);
    OSTaskNameSet(KEYPAD_RD_TASK_PRIO, "KeypadRd Task", &err);          
}


/*$PAGE*/
/*
*********************************************************************************************************
*                                             SevenSegWriteTask
*