net_util.h

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....

/*
*********************************************************************************************************
*                                              uC/TCP-IP
*                                      The Embedded TCP/IP Suite
*
*                          (c) Copyright 2003-2007; Micrium, Inc.; Weston, FL
*
*               All rights reserved.  Protected by international copyright laws.
*
*               uC/TCP-IP is provided in source form for FREE evaluation, for educational
*               use or peaceful research.  If you plan on using uC/TCP-IP in a commercial
*               product you need to contact Micrium to properly license its use in your
*               product.  We provide ALL the source code for your convenience and to help
*               you experience uC/TCP-IP.  The fact that the source code is provided does
*               NOT mean that you can use it without paying a licensing fee.
*
*               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.
*********************************************************************************************************
*/

/*
*********************************************************************************************************
*
*                                       NETWORK UTILITY LIBRARY
*
* Filename      : net_util.h
* Version       : V1.89
* Programmer(s) : ITJ
*********************************************************************************************************
* Note(s)       : (1) NO compiler-supplied standard library functions are used by the network protocol suite.
*                     'net_util.*' implements ALL network-specific library functions.
*
*                     See also 'net.h  NETWORK INCLUDE FILES  Note #3'.
*********************************************************************************************************
*/

/*
*********************************************************************************************************
*                                               EXTERNS
*********************************************************************************************************
*/

#ifdef   NET_UTIL_MODULE
#define  NET_UTIL_EXT
#else
#define  NET_UTIL_EXT  extern
#endif


/*$PAGE*/
/*
*********************************************************************************************************
*                                               DEFINES
*********************************************************************************************************
*/


/*
*********************************************************************************************************
*                                               MACRO'S
*********************************************************************************************************
*/

/*
*********************************************************************************************************
*                           NETWORK WORD ORDER - TO - CPU WORD ORDER MACRO'S
*
* Description : Convert data values to & from network word order to host CPU word order.
*
* Argument(s) : val       Data value to convert (see Note #1).
*
* Return(s)   : Converted data value (see Note #1).
*
* Caller(s)   : various.
*
*               These macro's are network protocol suite application interface (API) macro's & MAY be 
*               called by application function(s).
*
* Note(s)     : (1) 'val' data value to convert & any variable to receive the returned conversion MUST 
*                   start on appropriate CPU word-aligned addresses.  This is required because most word-
*                   aligned processors are more efficient & may even REQUIRE that multi-octet words start 
*                   on CPU word-aligned addresses.
*
*                   (a) For 16-bit word-aligned processors, this means that
*
*                           all 16- & 32-bit words MUST start on addresses that are multiples of 2 octets
*
*                   (b) For 32-bit word-aligned processors, this means that
*
*                           all 16-bit       words MUST start on addresses that are multiples of 2 octets
*                           all 32-bit       words MUST start on addresses that are multiples of 4 octets
*
*                   See also 'lib_mem.h  MEMORY DATA VALUE MACRO'S  Note #1a'.
*********************************************************************************************************
*/

#if     (CPU_CFG_ENDIAN_TYPE == CPU_ENDIAN_TYPE_BIG)

#define  NET_UTIL_NET_TO_HOST_32(val)                                   (val)
#define  NET_UTIL_NET_TO_HOST_16(val)                                   (val)


#else

#if     (CPU_CFG_DATA_SIZE   == CPU_WORD_SIZE_32)

#define  NET_UTIL_NET_TO_HOST_32(val)                   (((((CPU_INT32U)(val)) & 0xFF000000) >> 24) | \
                                                         ((((CPU_INT32U)(val)) & 0x00FF0000) >>  8) | \
                                                         ((((CPU_INT32U)(val)) & 0x0000FF00) <<  8) | \
                                                         ((((CPU_INT32U)(val)) & 0x000000FF) << 24))

#define  NET_UTIL_NET_TO_HOST_16(val)                   (((((CPU_INT16U)(val)) &     0xFF00) >>  8) | \
                                                         ((((CPU_INT16U)(val)) &     0x00FF) <<  8))
                                       
#elif   (CPU_CFG_DATA_SIZE   == CPU_WORD_SIZE_16)

#define  NET_UTIL_NET_TO_HOST_32(val)                   (((((CPU_INT32U)(val)) & 0xFF000000) >>  8) | \
                                                         ((((CPU_INT32U)(val)) & 0x00FF0000) <<  8) | \
                                                         ((((CPU_INT32U)(val)) & 0x0000FF00) >>  8) | \
                                                         ((((CPU_INT32U)(val)) & 0x000000FF) <<  8))

#define  NET_UTIL_NET_TO_HOST_16(val)                   (((((CPU_INT16U)(val)) &     0xFF00) >>  8) | \
                                                         ((((CPU_INT16U)(val)) &     0x00FF) <<  8))
                                       
#else

#define  NET_UTIL_NET_TO_HOST_32(val)                                   (val)
#define  NET_UTIL_NET_TO_HOST_16(val)                                   (val)

#endif
#endif



#define  NET_UTIL_HOST_TO_NET_32(val)            NET_UTIL_NET_TO_HOST_32(val)
#define  NET_UTIL_HOST_TO_NET_16(val)            NET_UTIL_NET_TO_HOST_16(val)


/*$PAGE*/
/*
*********************************************************************************************************
*                                     NETWORK DATA VALUE MACRO'S
*
* Description : Encode/decode data values to & from any CPU memory addresses.
*