lwipopts.h

这是我在ARM7Samsung3C44B0x芯片的实验板上开发的贪吃蛇游戏的源代码

#ifndef _LWIPOPTS_H_
#define _LWIPOPTS_H_

#ifdef LWIP_DEBUG
#undef LWIP_DEBUG
#endif

/* Options that would ordinarily be application configurable we'll make
   configurable differently. These are currently set to lwip defaults */

/* ---------- Statistics options ---------- */
//#define STATS

#ifdef STATS
#define LINK_STATS
#define IP_STATS
#define ICMP_STATS
#define UDP_STATS
#define TCP_STATS
#define MEM_STATS
#define MEMP_STATS
#define PBUF_STATS
#define SYS_STATS
#endif /* STATS */

/* ---------- IP options ---------- */
/* Define IP_FORWARD if you wish to have the ability to forward
   IP packets across network interfaces. If you are going to run
   lwIP on a device with only one network interface, don't define
   this. */
#define IP_FORWARD              0

/* ---------- ICMP options ---------- */
#define ICMP_TTL                255

/* ---------- UDP options ---------- */
#define UDP_TTL                 255

/* ---------- TCP options ---------- */
#define TCP_TTL                 255

#define TCP_QUEUE_OOSEQ         1

/* TCP Maximum segment size. */
#define TCP_MSS                 512

/* TCP sender buffer space (bytes). */
#define TCP_SND_BUF             1024
/* TCP sender buffer space (pbufs). This must be at least = 2 *
   TCP_SND_BUF/TCP_MSS for things to work. */
#define TCP_SND_QUEUELEN        (2 * TCP_SND_BUF/TCP_MSS)

/* TCP receive window. */
#define TCP_WND                 4096

/* Maximum number of retransmissions. */
#define TCP_MAXRTX              12
#define TCP_SYNMAXRTX           12

/* ---------- Memory options ---------- */
#define MEM_ALIGNMENT           1

/* Shrunk this down from 160000 -- this should probably be far memory someday */
#define MEM_SIZE                12000

#define MEM_RECLAIM             1
#define MEMP_RECLAIM            1

#define MEM_POOLS               1

#define MEMP_NUM_PBUF           20
#define MEMP_NUM_UDP_PCB        20
#define MEMP_NUM_TCP_PCB        20
#define MEMP_NUM_TCP_PCB_LISTEN 20
#define MEMP_NUM_TCP_PCB_TW     0
#define MEMP_NUM_TCP_SEG        20
#define MEMP_NUM_NETBUF         20
#define MEMP_NUM_NETCONN        20
#define MEMP_NUM_API_MSG        20
#define MEMP_NUM_TCPIP_MSG      20

#define MEMP_NUM_SYS_TIMEOUT    2

/* ---------- Pbuf options ---------- */

#define PBUF_POOL_SIZE          20
#define PBUF_POOL_BUFSIZE       128

#define PBUF_LINK_HLEN          16

#define ARP_TABLE_SIZE          20

/* Turn on DHCP protocol special processing */

#define LWIP_DHCP 0

#endif /*  *_LWIOPTS_H_ */