net_os.c

从Luminary官方网站下载的LM3S6000系列的UCos+Tcp/IP的源码, 经本人稍微修改后可直接在IAR6.2下编译通过,里面包括了LM3S6000系列的所有外设UART, PWn....

    NetOS_InitSignalPtr = OSSemCreate((INT16U)0);           /* Create network initialization signal (see Note #1a).     */
    if (NetOS_InitSignalPtr == (OS_EVENT *)0) {
       *perr = NET_OS_ERR_INIT_SIGNAL;
        return;
    }

#if (OS_EVENT_NAME_SIZE >= NET_OBJ_NAME_SIZE_MAX)
    OSEventNameSet((OS_EVENT *) NetOS_InitSignalPtr,
                   (INT8U    *) NET_INIT_NAME,
                   (INT8U    *)&os_err);
    if (os_err !=  OS_ERR_NONE) {
       *perr = NET_OS_ERR_INIT_SIGNAL_NAME;
        return;
    }
#endif


    NetOS_LockPtr = OSSemCreate((INT16U)1);                 /* Create network lock (see Note #1b).                      */
    if (NetOS_LockPtr == (OS_EVENT *)0) {
       *perr = NET_OS_ERR_INIT_LOCK;
        return;
    }

#if (OS_EVENT_NAME_SIZE >= NET_OBJ_NAME_SIZE_MAX)
    OSEventNameSet((OS_EVENT *) NetOS_LockPtr,
                   (INT8U    *) NET_LOCK_NAME,
                   (INT8U    *)&os_err);
    if (os_err !=  OS_ERR_NONE) {
       *perr = NET_OS_ERR_INIT_LOCK_NAME;
        return;
    }
#endif


#if (NET_CFG_LOAD_BAL_EN == DEF_ENABLED)
    NetOS_TxSuspendSignalPtr = OSSemCreate((INT16U)0);      /* Create network transmit suspend signal (see Note #1c).   */
    if (NetOS_TxSuspendSignalPtr == (OS_EVENT *)0) {
       *perr = NET_OS_ERR_INIT_TX_SUSPEND;
        return;
    }
                                                            /* Initialize net transmit suspend signal timeout value.    */
    NetOS_TxSuspendTimeoutSet(NET_CFG_TX_SUSPEND_TIMEOUT_MS, &net_err);
    if (net_err != NET_ERR_NONE) {
       *perr = NET_OS_ERR_INIT_TX_SUSPEND_TIMEOUT;
        return;
    }

#if (OS_EVENT_NAME_SIZE >= NET_OBJ_NAME_SIZE_MAX)
    OSEventNameSet((OS_EVENT *) NetOS_TxSuspendSignalPtr,
                   (INT8U    *) NET_TX_SUSPEND_NAME,
                   (INT8U    *)&os_err);
    if (os_err !=  OS_ERR_NONE) {
       *perr = NET_OS_ERR_INIT_TX_SUSPEND_NAME;
        return;
    }
#endif
#endif


   *perr = NET_OS_ERR_NONE;
}


/*$PAGE*/
/*
*********************************************************************************************************
*                                          NetOS_InitWait()
*
* Description : Wait on signal indicating network initialization is complete.
*
* Argument(s) : perr        Pointer to variable that will receive the return error code from this function :
*
*                               NET_OS_ERR_NONE                 Initialization signal     received.
*                               NET_OS_ERR_INIT                 Initialization signal NOT received.
*
* Return(s)   : none.
*
* Caller(s)   : NetIF_RxTaskHandler(),
*               NetTmr_TaskHandler().
*
*               This function is an INTERNAL network protocol suite function & MUST NOT be called by 
*               application function(s).
*
* Note(s)     : (1) Network initialization signal MUST be acquired--i.e. MUST wait for access; do NOT timeout.
*
*                   Failure to acquire signal will prevent network task(s) from running.
*********************************************************************************************************
*/

void  NetOS_InitWait (NET_ERR  *perr)
{
    INT8U  os_err;


    OSSemPend((OS_EVENT *) NetOS_InitSignalPtr,                 /* Wait until network initialization completes ...      */
              (INT16U    ) 0,                                   /* ... without timeout (see Note #1).                   */
              (INT8U    *)&os_err);

    switch (os_err) {
        case OS_ERR_NONE:
            *perr = NET_OS_ERR_NONE;
             break;


        case OS_ERR_PEVENT_NULL:
        case OS_ERR_EVENT_TYPE:
        case OS_ERR_PEND_ISR:
        case OS_ERR_PEND_ABORT:
        case OS_ERR_TIMEOUT:
        default:
            *perr = NET_OS_ERR_INIT;
             break;
    }
}


/*$PAGE*/
/*
*********************************************************************************************************
*                                         NetOS_InitSignal()
*
* Description : Signal that network initialization is complete.
*
* Argument(s) : perr        Pointer to variable that will receive the return error code from this function :
*
*                               NET_OS_ERR_NONE                 Network initialization     successfully signaled.
*                               NET_OS_ERR_INIT_SIGNALD         Network initialization NOT successfully signaled.
*
* Return(s)   : none.
*
* Caller(s)   : Net_Init().
*
*               This function is an INTERNAL network protocol suite function & MUST NOT be called by 
*               application function(s).
*
* Note(s)     : (1) Network initialization MUST be signaled--i.e. MUST signal without failure.
*
*                   Failure to signal will prevent network task(s) from running.
*********************************************************************************************************
*/

void  NetOS_InitSignal (NET_ERR  *perr)
{
    INT8U  os_err;


    os_err = OSSemPost(NetOS_InitSignalPtr);                    /* Signal network initialization complete.              */
    if (os_err !=  OS_ERR_NONE) {
       *perr = NET_OS_ERR_INIT_SIGNALD;
    }

    *perr = NET_OS_ERR_NONE;
}


/*$PAGE*/
/*
*********************************************************************************************************
*                                            NetOS_Lock()
*
* Description : Acquire mutually exclusive access to network protocol suite.
*
* Argument(s) : perr        Pointer to variable that will receive the return error code from this function :
*
*                               NET_OS_ERR_NONE                 Network access     acquired.
*                               NET_OS_ERR_LOCK                 Network access NOT acquired.
*
* Return(s)   : none.
*
* Caller(s)   : various.
*
*               This function is an INTERNAL network protocol suite function & SHOULD NOT be called by 
*               application function(s).
*
* Note(s)     : (1) Network access MUST be acquired--i.e. MUST wait for access; do NOT timeout.
*
*                   Failure to acquire network access will prevent network task(s)/operation(s)
*                   from functioning.
*********************************************************************************************************
*/

void  NetOS_Lock (NET_ERR  *perr)
{
    INT8U  os_err;


    OSSemPend((OS_EVENT *) NetOS_LockPtr,                       /* Acquire network access ...                           */
              (INT16U    ) 0,                                   /* ... without timeout (see Note #1).                   */
              (INT8U    *)&os_err);

    switch (os_err) {
        case OS_ERR_NONE:
            *perr = NET_OS_ERR_NONE;
             break;


        case OS_ERR_PEVENT_NULL:
        case OS_ERR_EVENT_TYPE:
        case OS_ERR_PEND_ISR:
        case OS_ERR_PEND_ABORT:
        case OS_ERR_TIMEOUT:
        default:
            *perr = NET_OS_ERR_LOCK;
             break;
    }
}


/*$PAGE*/
/*
*********************************************************************************************************
*                                           NetOS_Unlock()
*
* Description : Release mutually exclusive access to network protocol suite.
*
* Argument(s) : none.
*
* Return(s)   : none.
*
* Caller(s)   : various.
*
*               This function is an INTERNAL network protocol suite function & SHOULD NOT be called by 
*               application function(s).
*
* Note(s)     : (1) Network access MUST be released--i.e. MUST unlock access without failure.
*
*                   Failure to release network access will prevent network task(s)/operation(s)
*                   from functioning.
*********************************************************************************************************
*/

void  NetOS_Unlock (void)
{
   (void)OSSemPost(NetOS_LockPtr);                              /* Release network access.                              */
}


/*$PAGE*/
/*
*********************************************************************************************************
*                                        NetOS_TxSuspendWait()
*
* Description : Wait on network transmit suspend signal.
*
* Argument(s) : none.
*
* Return(s)   : none.
*
* Caller(s)   : Net_TxSuspend().
*
*               This function is an INTERNAL network protocol suite function & MUST NOT be called by 
*               application function(s).
*
* Note(s)     : (1) Network transmit suspend waits until :
*
*                   (a) Signaled
*                   (b) Timed out
*                   (c) Any OS fault occurs
*
*               (2) Implement timeout with OS-dependent functionality.
*********************************************************************************************************
*/

#if (NET_CFG_LOAD_BAL_EN == DEF_ENABLED)
void  NetOS_TxSuspendWait (void)
{
    INT8U  os_err;

                                                                /* Wait on network transmit suspend signal.               */
    OSSemPend(NetOS_TxSuspendSignalPtr, NetOS_TxSuspendTimeout_tick, &os_err);

   (void)&os_err;                                               /* See Note #1c.                                          */
}
#endif


/*$PAGE*/
/*
*********************************************************************************************************
*                                       NetOS_TxSuspendSignal()
*
* Description : Signal network transmit suspend.
*
* Argument(s) : none.
*
* Return(s)   : none.
*
* Caller(s)   : Net_TxSuspendSignal().
*
*               This function is an INTERNAL network protocol suite function & MUST NOT be called by 
*               application function(s).
*
* Note(s)     : (1) Failure to signal network transmit suspend signal will cause network transmit suspends
*                   to timeout.
*
*                   See also 'NetOS_TxSuspendWait()  Note #1b'.
*********************************************************************************************************
*/

#if (NET_CFG_LOAD_BAL_EN == DEF_ENABLED)
void  NetOS_TxSuspendSignal (void)
{
   (void)OSSemPost(NetOS_TxSuspendSignalPtr);                   /* Signal network transmit suspend.                     */
}
#endif


/*$PAGE*/
/*
*********************************************************************************************************
*                                     NetOS_TxSuspendTimeoutSet()
*
* Description : Set network transmit suspend timeout value.
*