app.c

来自「xilinx内嵌CPU下的UCOS移植」· C语言 代码 · 共 116 行

/*
*********************************************************************************************************
*                                                uC/OS-II
*                                          The Real-Time Kernel
*
*                                                  EX1_OS
*
*
* Description:  Shows an example of how to use uCOS-II with the MicroBlaze processor.  
*********************************************************************************************************
*/

#include "includes.h"

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

static  OS_STK   AppTaskFirstStk [APP_TASK_FIRST_STK_SIZE];  /* Start task stack                        */

/*
*********************************************************************************************************
*                                             PROTOTYPES
*********************************************************************************************************
*/

static  void     AppTaskFirst(void *p_arg);

/*
*********************************************************************************************************
*                                              main()
* 
* Description: This is the 'standard' C startup entry point.  main() does the following:
*              
*              1) Initialize uC/OS-II
*              2) Create a single task
*              3) Start uC/OS-II
*
* Arguments  : None
*
* Returns    : main() should NEVER return
*********************************************************************************************************
*/

int  main (void)
{
    INT8U    err;

      /*
    * Enable and initialize cache
    */
    #if XPAR_MICROBLAZE_0_USE_ICACHE
	    print("-- ICACHE --\r\n");
       microblaze_init_icache_range(0, XPAR_MICROBLAZE_0_CACHE_BYTE_SIZE);
       microblaze_enable_icache();
    #endif

    #if XPAR_MICROBLAZE_0_USE_DCACHE
	    print("-- DCACHE --\r\n");
       microblaze_init_dcache_range(0, XPAR_MICROBLAZE_0_DCACHE_BYTE_SIZE);
       microblaze_enable_dcache();
    #endif 
    print("-- Entering main() --\r\n");
    BSP_IntDisAll();                         /* Make sure interrupts are disabled on interrupt controller */

    OSInit();                                /* Initialize uC/OS-II                                       */

    OSTaskCreateExt(AppTaskFirst,
                   (void *)0,
                   &AppTaskFirstStk[APP_TASK_FIRST_STK_SIZE - 1],
                   APP_TASK_FIRST_PRIO,
                   APP_TASK_FIRST_ID,
                   &AppTaskFirstStk[0],
                   APP_TASK_FIRST_STK_SIZE,
                   (void *)0,
                   OS_TASK_OPT_STK_CHK | OS_TASK_OPT_STK_CLR);
    OSTaskNameSet(APP_TASK_FIRST_PRIO, "App Task First", &err);

    OSStart();                               /* Start multitasking                                        */
}

/*$PAGE*/
/*
*********************************************************************************************************
*                                             AppTaskFirst()
* 
* Description: This is the first task executed by uC/OS-II following OSStart()
*              
* Arguments  : p_arg        Argument passed to this task when task is created.  The argument is not used.
*
* Returns    : None
*********************************************************************************************************
*/

static  void  AppTaskFirst (void *p_arg)
{

    (void)p_arg;                          /* Prevent compiler warning by doing something with argument */

    BSP_InitIO();                         /* Initialize the I/Os                                       */

#if OS_TASK_STAT_EN > 0
    OSStatInit();                         /* Initialize uC/OS-II's statistics                          */
#endif


    while (1) { 
        LED_Toggle(1);
        OSTimeDlyHMSM(0,0,0,300);
    }
}