FreeRtos+lwip PING 不稳定

Zohey · 发表于 2016-12-14 10:33:32

在STM32F207 基于freertos移植LWIP1.4.1（基于ST的官方例程）后可以ping通，但当
#define ETH_RXBUFNB 5
#define ETH_TXBUFNB 5 ，时
非常不稳定。如下图

#define ETH_RXBUFNB 1
#define ETH_TXBUFNB 1 ，时相对稳定

lwipopt.h 配置如下
/**
  ******************************************************************************
  * @file lwipopts.h
  * @author  MCD Application Team
  * @version V1.1.0
  * @date 07-October-2011
  * @brief lwIP Options Configuration.
  *       This file is based on Utilities\lwip_v1.3.2\src\include\lwip\opt.h
  *       and contains the lwIP configuration for the STM32F2x7 demonstration.
  ******************************************************************************
  * @attention
  *
  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
  *
  * <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2>
  ******************************************************************************
  */
#ifndef __LWIPOPTS_H__
#define __LWIPOPTS_H__
/**
* SYS_LIGHTWEIGHT_PROT==1: if you want inter-task protection for certain
* critical regions during buffer allocation, deallocation and memory
* allocation and deallocation.
*/
#define SYS_LIGHTWEIGHT_PROT 1
#define ETHARP_TRUST_IP_MAC    0
#define IP_REASSEMBLY          0
#define IP_FRAG                0
#define ARP_QUEUEING          0
/**
* NO_SYS==1: Provides VERY minimal functionality. Otherwise,
* use lwIP facilities.
*/
#define NO_SYS                0
/* ---------- Memory options ---------- */
/* MEM_ALIGNMENT: should be set to the alignment of the CPU for which
lwIP is compiled. 4 byte alignment -> define MEM_ALIGNMENT to 4, 2
byte alignment -> define MEM_ALIGNMENT to 2. */
#define MEM_ALIGNMENT          4
/* MEM_SIZE: the size of the heap memory. If the application will send
a lot of data that needs to be copied, this should be set high. */
#define MEM_SIZE             (5*1024)
/* MEMP_NUM_PBUF: the number of memp struct pbufs. If the application
sends a lot of data out of ROM (or other static memory), this
should be set high. */
#define MEMP_NUM_PBUF          100
/* MEMP_NUM_UDP_PCB: the number of UDP protocol control blocks. One
per active UDP "connection". */
#define MEMP_NUM_UDP_PCB       6
/* MEMP_NUM_TCP_PCB: the number of simulatenously active TCP
connections. */
#define MEMP_NUM_TCP_PCB       10
/* MEMP_NUM_TCP_PCB_LISTEN: the number of listening TCP
connections. */
#define MEMP_NUM_TCP_PCB_LISTEN 5
/* MEMP_NUM_TCP_SEG: the number of simultaneously queued TCP
segments. */
#define MEMP_NUM_TCP_SEG       20
/* MEMP_NUM_SYS_TIMEOUT: the number of simulateously active
timeouts. */
#define MEMP_NUM_SYS_TIMEOUT 10
/**
* MEMP_NUM_NETCONN: the number of struct netconns.
*/
#define MEMP_NUM_NETCONN             10
/**
* MEMP_NUM_NETBUF: the number of struct netbufs.
*/
#define MEMP_NUM_NETBUF                6

/* ---------- Pbuf options ---------- */
/* PBUF_POOL_SIZE: the number of buffers in the pbuf pool. */
#define PBUF_POOL_SIZE       20
/* PBUF_POOL_BUFSIZE: the size of each pbuf in the pbuf pool. */
#define PBUF_POOL_BUFSIZE    512

/* ---------- TCP options ---------- */
#define LWIP_TCP             1
#define TCP_TTL                255
/* Controls if TCP should queue segments that arrive out of
order. Define to 0 if your device is low on memory. */
#define TCP_QUEUE_OOSEQ       0
/* TCP Maximum segment size. */
#define TCP_MSS                (1500 - 40) /* TCP_MSS = (Ethernet MTU - IP header size - TCP header size) */
/* TCP sender buffer space (bytes). */
#define TCP_SND_BUF          (5*TCP_MSS)
/*  TCP_SND_QUEUELEN: TCP sender buffer space (pbufs). This must be at least
  as much as (2 * TCP_SND_BUF/TCP_MSS) for things to work. */
#define TCP_SND_QUEUELEN       (4* TCP_SND_BUF/TCP_MSS)
/* TCP receive window. */
#define TCP_WND                (2*TCP_MSS)

/* ---------- ICMP options ---------- */
#define LWIP_ICMP                      1

/* ---------- DHCP options ---------- */
/* Define LWIP_DHCP to 1 if you want DHCP configuration of
interfaces. DHCP is not implemented in lwIP 0.5.1, however, so
turning this on does currently not work. */
#define LWIP_DHCP             1
/* ---------- options add by Zohey start---------- */
//#define LWIP_DNS                      1
//#define LWIP_SO_RCVTIMEO             1
//#define MEMP_NUM_RAW_PCB             6
/* ---------- options add by Zohey end---------- */
/* ---------- UDP options ---------- */
#define LWIP_UDP             1
#define UDP_TTL                255

/* ---------- Statistics options ---------- */
#define LWIP_STATS 0
#define LWIP_PROVIDE_ERRNO 1
/*
--------------------------------------
---------- Checksum options ----------
--------------------------------------
*/
/*
The STM32F2x7 allows computing and verifying the IP, UDP, TCP and ICMP checksums by hardware:
- To use this feature let the following define uncommented.
- To disable it and process by CPU comment the  the checksum.
*/
//#define CHECKSUM_BY_HARDWARE

#ifdef CHECKSUM_BY_HARDWARE
  /* CHECKSUM_GEN_IP==0: Generate checksums by hardware for outgoing IP packets.*/
  #define CHECKSUM_GEN_IP                0
  /* CHECKSUM_GEN_UDP==0: Generate checksums by hardware for outgoing UDP packets.*/
  #define CHECKSUM_GEN_UDP             0
  /* CHECKSUM_GEN_TCP==0: Generate checksums by hardware for outgoing TCP packets.*/
  #define CHECKSUM_GEN_TCP             0
  /* CHECKSUM_CHECK_IP==0: Check checksums by hardware for incoming IP packets.*/
  #define CHECKSUM_CHECK_IP             0
  /* CHECKSUM_CHECK_UDP==0: Check checksums by hardware for incoming UDP packets.*/
  #define CHECKSUM_CHECK_UDP             0
  /* CHECKSUM_CHECK_TCP==0: Check checksums by hardware for incoming TCP packets.*/
  #define CHECKSUM_CHECK_TCP             0
#else
  /* CHECKSUM_GEN_IP==1: Generate checksums in software for outgoing IP packets.*/
  #define CHECKSUM_GEN_IP                1
  /* CHECKSUM_GEN_UDP==1: Generate checksums in software for outgoing UDP packets.*/
  #define CHECKSUM_GEN_UDP             1
  /* CHECKSUM_GEN_TCP==1: Generate checksums in software for outgoing TCP packets.*/
  #define CHECKSUM_GEN_TCP             1
  /* CHECKSUM_CHECK_IP==1: Check checksums in software for incoming IP packets.*/
  #define CHECKSUM_CHECK_IP             1
  /* CHECKSUM_CHECK_UDP==1: Check checksums in software for incoming UDP packets.*/
  #define CHECKSUM_CHECK_UDP             1
  /* CHECKSUM_CHECK_TCP==1: Check checksums in software for incoming TCP packets.*/
  #define CHECKSUM_CHECK_TCP             1
#endif

/*
----------------------------------------------
---------- Sequential layer options ----------
----------------------------------------------
*/
/**
* LWIP_NETCONN==1: Enable Netconn API (require to use api_lib.c)
*/
#define LWIP_NETCONN                   1
/**
* LWIP_DNS==1: Turn on DNS module. UDP must be available for DNS
* transport.
*/
#define LWIP_DNS                      1
/*
------------------------------------
---------- Socket options ----------
------------------------------------
*/
/**
* LWIP_SOCKET==1: Enable Socket API (require to use sockets.c)
*/
#define LWIP_SOCKET                   1
/*
-----------------------------------
---------- DEBUG options ----------
-----------------------------------
*/
//#define LWIP_DEBUG                   0

/*
---------------------------------
---------- OS options ----------
---------------------------------
*/
#define TCPIP_THREAD_STACKSIZE       1000
#define TCPIP_MBOX_SIZE                archMESG_QUEUE_LENGTH
#define DEFAULT_UDP_RECVMBOX_SIZE    2000
#define DEFAULT_TCP_RECVMBOX_SIZE    2000
#define DEFAULT_RAW_RECVMBOX_SIZE    2000
#define DEFAULT_ACCEPTMBOX_SIZE       2000
#define DEFAULT_THREAD_STACKSIZE       512
#define TCPIP_THREAD_PRIO             (configMAX_PRIORITIES - 2)

#endif /* __LWIPOPTS_H__ */
/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/

不知大家有没有思路，这ping超时一般是什么原因导致的？