app.c

stm32+ucos-ii

/*
*********************************************************************************************************
*                                              EXAMPLE CODE
*
*                          (c) Copyright 2003-2007; Micrium, Inc.; Weston, FL
*
*               All rights reserved.  Protected by international copyright laws.
*               Knowledge of the source code may NOT be used to develop a similar product.
*               Please help us continue to provide the Embedded community with the finest
*               software available.  Your honesty is greatly appreciated.
*********************************************************************************************************
*/

/*
*********************************************************************************************************
*
*                                            EXAMPLE CODE
*
*                                     ST Microelectronics STM32
*                                              on the
*
*                                     Micrium uC-Eval-STM32F107
*                                        Evaluation Board
*
* Filename      : app.c
* Version       : V1.00
* Programmer(s) : EHS
*********************************************************************************************************
*/

/*
*********************************************************************************************************
*                                             INCLUDE FILES
*********************************************************************************************************
*/

#include <includes.h>


/*
*********************************************************************************************************
*                                            LOCAL DEFINES
*********************************************************************************************************
*/


/*
*********************************************************************************************************
*                                       LOCAL GLOBAL VARIABLES
*********************************************************************************************************
*/

static   OS_STK      AppTaskStartStk[APP_TASK_START_STK_SIZE];


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

static  void    AppTaskCreate  (void);
static  void    AppTaskStart   (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 initialization.
*
* Arguments   : none
*
* Returns     : none
*********************************************************************************************************
*/

int  main (void)
{
    CPU_INT08U  err;


    BSP_IntDisAll();                                            /* Disable all interrupts until we are ready to accept them */

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

    OSTaskCreateExt(AppTaskStart,                               /* Create the start task                                    */
                    (void *)0,
                    (OS_STK *)&AppTaskStartStk[APP_TASK_START_STK_SIZE - 1],
                    APP_TASK_START_PRIO,
                    APP_TASK_START_PRIO,
                    (OS_STK *)&AppTaskStartStk[0],
                    APP_TASK_START_STK_SIZE,
                    (void *)0,
                    OS_TASK_OPT_STK_CHK | OS_TASK_OPT_STK_CLR);

#if (OS_TASK_NAME_EN > 0)
    OSTaskNameSet(APP_TASK_START_PRIO, "Start Task", &err);
#endif

    OSStart();                                                  /* Start multitasking (i.e. give control to uC/OS-II)       */
}


/*
*********************************************************************************************************
*                                          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 'AppTaskStart()' by 'OSTaskCreate()'.
*
* Returns     : none
*
* 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.
*********************************************************************************************************
*/

static  void  AppTaskStart (void *p_arg)
{
    CPU_INT32U  hclk_freq;
    CPU_INT32U  cnts;
    

   (void)p_arg;

    BSP_Init();                                                 /* Init BSP fncts.                                          */

    CPU_Init();                                                 /* Init CPU name & int. dis. time measuring fncts.          */
    
#if (BSP_SER_COMM_EN == DEF_ENABLED)                            /* Init serial port 0 to 115,2000 baud for use  with  ...   */
    BSP_Ser_Init(115200);                                       /* ... tracing. See app_cfg.h.                              */
#endif

    hclk_freq = BSP_CPU_ClkFreq();                              /* Determine SysTick reference freq.                        */
    cnts  = hclk_freq / (CPU_INT32U)OS_TICKS_PER_SEC;           /* Determine nbr SysTick increments in OS_TICKS_PER_SEC.    */
    OS_CPU_SysTickInit(cnts);                                   /* Init uC/OS periodic time src (SysTick).                  */

    Mem_Init();                                                 /* Init mem mgmt module.                                    */

#if (OS_TASK_STAT_EN > 0)
    OSStatInit();                                               /* Determine CPU capacity                                   */
#endif

    AppTaskCreate();                                            /* Create application tasks                                 */

    BSP_LED_Off(0);

    while (DEF_TRUE) {                                          /* Task body, always written as an infinite loop.           */
        BSP_LED_Toggle(0);
        OSTimeDlyHMSM(0, 0, 0, 500);
    }
}


/*
*********************************************************************************************************
*                                      CREATE APPLICATION TASKS
*
* Description:  This function creates the application tasks.
*
* Arguments  :  none
*
* Returns    :  none
*********************************************************************************************************
*/

static  void  AppTaskCreate (void)
{
}