ucos_ii.h

UCOS最小系统。能在单片机上闪烁LED。支持2个led闪烁。

/*
*********************************************************************************************************
*                                                uC/OS-II
*                                          The Real-Time Kernel
*
*                        (c) Copyright 1992-1998, Jean J. Labrosse, Plantation, FL
*                                           All Rights Reserved
*
*                                                  V2.00
*
* File : uCOS_II.H
* By   : Jean J. Labrosse
*********************************************************************************************************
*/

/*
*********************************************************************************************************
*                                             MISCELLANEOUS
*********************************************************************************************************
*/

#define  OS_VERSION              200   /* Version of uC/OS-II (Vx.yy multiplied by 100)                */

#ifdef   OS_GLOBALS
#define  OS_EXT
#else
#define  OS_EXT  extern
#endif

#define  OS_PRIO_SELF           0xFF   /* Indicate SELF priority                                       */

#if      OS_TASK_STAT_EN
#define  OS_N_SYS_TASKS            2                    /* Number of system tasks                      */
#else
#define  OS_N_SYS_TASKS            1
#endif

#define  OS_STAT_PRIO       (OS_LOWEST_PRIO - 1)        /* Statistic task priority                     */
#define  OS_IDLE_PRIO       (OS_LOWEST_PRIO)            /* IDLE      task priority                     */

#define  OS_EVENT_TBL_SIZE ((OS_LOWEST_PRIO) / 8 + 1)   /* Size of event table                         */
#define  OS_RDY_TBL_SIZE   ((OS_LOWEST_PRIO) / 8 + 1)   /* Size of ready table                         */


                                       /* TASK STATUS (Bit definition for OSTCBStat)                   */
#define  OS_STAT_RDY            0x00   /* Ready to run                                                 */
#define  OS_STAT_SEM            0x01   /* Pending on semaphore                                         */
#define  OS_STAT_MBOX           0x02   /* Pending on mailbox                                           */
#define  OS_STAT_Q              0x04   /* Pending on queue                                             */
#define  OS_STAT_SUSPEND        0x08   /* Task is suspended                                            */

#define  OS_EVENT_TYPE_MBOX        1
#define  OS_EVENT_TYPE_Q           2
#define  OS_EVENT_TYPE_SEM         3

                                       /* TASK OPTIONS (see OSTaskCreateExt())                         */
#define  OS_TASK_OPT_STK_CHK  0x0001   /* Enable stack checking for the task                           */
#define  OS_TASK_OPT_STK_CLR  0x0002   /* Clear the stack when the task is create                      */
#define  OS_TASK_OPT_SAVE_FP  0x0004   /* Save the contents of any floating-point registers            */


#ifndef  FALSE
#define  FALSE                     0
#endif

#ifndef  TRUE
#define  TRUE                      1
#endif

/*
*********************************************************************************************************
*                                              ERROR CODES
*********************************************************************************************************
*/

#define OS_NO_ERR                 0
#define OS_ERR_EVENT_TYPE         1
#define OS_ERR_PEND_ISR           2
#define OS_ERR_TASK_NO_MORE_TCB   66
#define OS_ERR_TASK_CREATE_ISR   64
#define OS_TIMEOUT               10
#define OS_TASK_NOT_EXIST        11

#define OS_MBOX_FULL             20

#define OS_Q_FULL                30

#define OS_PRIO_EXIST            40
#define OS_PRIO_ERR              41
#define OS_PRIO_INVALID          42

#define OS_SEM_OVF               50

#define OS_TASK_DEL_ERR          60
#define OS_TASK_DEL_IDLE         61
#define OS_TASK_DEL_REQ          62
#define OS_TASK_DEL_ISR          63

#define OS_NO_MORE_TCB           70

#define OS_TIME_NOT_DLY          80
#define OS_TIME_INVALID_MINUTES  81
#define OS_TIME_INVALID_SECONDS  82
#define OS_TIME_INVALID_MILLI    83
#define OS_TIME_ZERO_DLY         84

#define OS_TASK_SUSPEND_PRIO     90
#define OS_TASK_SUSPEND_IDLE     91

#define OS_TASK_RESUME_PRIO     100
#define OS_TASK_NOT_SUSPENDED   101


#define OS_TASK_OPT_ERR         130

/*$PAGE*/
/*
*********************************************************************************************************
*                                          EVENT CONTROL BLOCK
*********************************************************************************************************
*/




/*
*********************************************************************************************************
*                                            TASK STACK DATA
*********************************************************************************************************
*/

#if OS_TASK_CREATE_EXT_EN
typedef struct {
    INT32U  OSFree;                    /* Number of free bytes on the stack                            */
    INT32U  OSUsed;                    /* Number of bytes used on the stack                            */
} OS_STK_DATA;
#endif

/*$PAGE*/
/*
*********************************************************************************************************
*                                          TASK CONTROL BLOCK
*********************************************************************************************************
*/

typedef struct os_tcb {
    OS_STK        *OSTCBStkPtr;        /* Pointer to current top of stack                              */

#if OS_TASK_CREATE_EXT_EN    
    void          *OSTCBExtPtr;        /* Pointer to user definable data for TCB extension             */
    OS_STK        *OSTCBStkBottom;     /* Pointer to bottom of stack                                   */
    INT32U         OSTCBStkSize;       /* Size of task stack (in bytes)                                */
    INT16U         OSTCBOpt;           /* Task options as passed by OSTaskCreateExt()                  */
    INT16U         OSTCBId;            /* Task ID (0..65535)                                           */
#endif

    struct os_tcb *OSTCBNext;          /* Pointer to next     TCB in the TCB list                      */
    struct os_tcb *OSTCBPrev;          /* Pointer to previous TCB in the TCB list                      */

    INT16U         OSTCBDly;           /* Nbr ticks to delay task or, timeout waiting for event        */
    INT8U          OSTCBStat;          /* Task status                                                  */
    //INT8U          OSTCBStatPend;    /* Task PEND status                                             */
    INT8U          OSTCBPrio;          /* Task priority (0 == highest, 63 == lowest)                   */

    INT8U          OSTCBX;             /* Bit position in group  corresponding to task priority (0..7) */
    INT8U          OSTCBY;             /* Index into ready table corresponding to task priority        */
    INT8U          OSTCBBitX;          /* Bit mask to access bit position in ready table               */
    INT8U          OSTCBBitY;          /* Bit mask to access bit position in ready group               */
    
#if OS_TASK_DEL_EN    
    BOOLEAN        OSTCBDelReq;        /* Indicates whether a task needs to delete itself              */
#endif
} OS_TCB;

/*$PAGE*/
/*
*********************************************************************************************************
*                                            GLOBAL VARIABLES
*********************************************************************************************************
*/
                                       
OS_EXT  INT32U       OSCtxSwCtr;               /* Counter of number of context switches                */



OS_EXT  INT32U       OSIdleCtr;                /* Idle counter                                         */