sys_arch.h
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/*
* Copyright (c) 2001-2003 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 <adam@sics.se>
*
*/
#ifndef __ARCH_SYS_ARCH_H__
#define __ARCH_SYS_ARCH_H__
#include <includes.h>
#include "arch/cc.h"
#include "includes.h"
#ifdef SYS_ARCH_GLOBALS
#define SYS_ARCH_EXT
#else
#define SYS_ARCH_EXT extern
#endif
#define MAX_QUEUES 10 // 消息邮箱的数量
#define MAX_QUEUE_ENTRIES 20 // 每个消息邮箱的大小
//LWIP消息邮箱结构体
typedef struct {
OS_EVENT* pQ; //UCOS中指向事件控制块的指针
void* pvQEntries[MAX_QUEUE_ENTRIES];//消息队列 MAX_QUEUE_ENTRIES消息队列中最多消息数
} TQ_DESCR, *PQ_DESCR;
typedef OS_EVENT *sys_sem_t; //LWIP使用的信号量
typedef OS_EVENT *sys_mutex_t; //LWIP使用的互斥信号量
typedef PQ_DESCR sys_mbox_t; //LWIP使用的消息邮箱,其实就是UCOS中的消息队列
typedef INT8U sys_thread_t; //线程ID,也就是任务优先级
#endif
/* __SYS_RTXC_H__ */