cc.h

lwip在ucos上的移植代码

/*
 * Copyright (c) 2001, Swedish Institute of Computer Science.
 * All rights reserved. 
 *
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions 
 * are met: 
 * 1. Redistributions of source code must retain the above copyright 
 *    notice, this list of conditions and the following disclaimer. 
 * 2. Redistributions in binary form must reproduce the above copyright 
 *    notice, this list of conditions and the following disclaimer in the 
 *    documentation and/or other materials provided with the distribution. 
 * 3. Neither the name of the Institute nor the names of its contributors 
 *    may be used to endorse or promote products derived from this software 
 *    without specific prior written permission. 
 *
 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
 * SUCH DAMAGE. 
 *
 * This file is part of the lwIP TCP/IP stack.
 * 
 * Author: Adam Dunkels <[e-mail]>
 *
 * $Id: cc.h,v 1.2 2005/01/09 13:58:06 millin Exp $
 */
#ifndef __CC_H__
#define __CC_H__

//定义ADS1.2相关的数据类型
typedef		unsigned char	u8_t;
typedef		signed char		s8_t;
typedef		unsigned short	u16_t;
typedef		signed short 	s16_t;
typedef		unsigned int	u32_t;
typedef		signed int		s32_t;

typedef		u32_t		mem_ptr_t;

//定义存储器模式：LPC2100设定为小端存储模式
#define BYTE_ORDER   LITTLE_ENDIAN  

/**
 *	注意：如果把具备__packed属性的指针变量赋值为普通的指针变量就会丢失__packed属性，
 *	编译器在默认情况下就会报错。。要解决这个问题有两个方法：一个是避免这种情况的出
 *	现，要么双方都具备__packed属性，要么都不具备；另一个是让编译器忽略这种错误，不
 *	再报错。我们采用第二种方法。	郁闷了好长时间才解决的，哈哈。
 *	
 *		千杯不醉　　2007.1.30
 */
//ADS中__packed保证单字节对齐
#define PACK_STRUCT_FIELD(x) __packed x
#define PACK_STRUCT_STRUCT
#define PACK_STRUCT_BEGIN __packed 
#define PACK_STRUCT_END

#ifndef LWIP_PLATFORM_DIAG
#define LWIP_PLATFORM_DIAG(x)	//do {printf x;} while(0)
#endif

#ifndef LWIP_PLATFORM_ASSERT
#define LWIP_PLATFORM_ASSERT(x) //do {printf("Assertion \"%s\" failed at line %d in %s\n", x, __LINE__, __FILE__); fflush(NULL); abort();} while(0)
#endif

#define LWIP_PROVIDE_ERRNO 1

#endif /* __CC_H__ */