Some quick code to use UDP-only (no TCP) with mBed. Echos received packets and sends packets when a button is pressed
memp_std.h
00001 /* 00002 * SETUP: Make sure we define everything we will need. 00003 * 00004 * We have create three types of pools: 00005 * 1) MEMPOOL - standard pools 00006 * 2) MALLOC_MEMPOOL - to be used by mem_malloc in mem.c 00007 * 3) PBUF_MEMPOOL - a mempool of pbuf's, so include space for the pbuf struct 00008 * 00009 * If the include'r doesn't require any special treatment of each of the types 00010 * above, then will declare #2 & #3 to be just standard mempools. 00011 */ 00012 #ifndef LWIP_MALLOC_MEMPOOL 00013 /* This treats "malloc pools" just like any other pool. 00014 The pools are a little bigger to provide 'size' as the amount of user data. */ 00015 #define LWIP_MALLOC_MEMPOOL(num, size) LWIP_MEMPOOL(POOL_##size, num, (size + sizeof(struct memp_malloc_helper)), "MALLOC_"#size) 00016 #define LWIP_MALLOC_MEMPOOL_START 00017 #define LWIP_MALLOC_MEMPOOL_END 00018 #endif /* LWIP_MALLOC_MEMPOOL */ 00019 00020 #ifndef LWIP_PBUF_MEMPOOL 00021 /* This treats "pbuf pools" just like any other pool. 00022 * Allocates buffers for a pbuf struct AND a payload size */ 00023 #define LWIP_PBUF_MEMPOOL(name, num, payload, desc) LWIP_MEMPOOL(name, num, (MEMP_ALIGN_SIZE(sizeof(struct pbuf)) + MEMP_ALIGN_SIZE(payload)), desc) 00024 #endif /* LWIP_PBUF_MEMPOOL */ 00025 00026 00027 /* 00028 * A list of internal pools used by LWIP. 00029 * 00030 * LWIP_MEMPOOL(pool_name, number_elements, element_size, pool_description) 00031 * creates a pool name MEMP_pool_name. description is used in stats.c 00032 */ 00033 #if LWIP_RAW 00034 LWIP_MEMPOOL(RAW_PCB, MEMP_NUM_RAW_PCB, sizeof(struct raw_pcb), "RAW_PCB") 00035 #endif /* LWIP_RAW */ 00036 00037 #if LWIP_UDP 00038 LWIP_MEMPOOL(UDP_PCB, MEMP_NUM_UDP_PCB, sizeof(struct udp_pcb), "UDP_PCB") 00039 #endif /* LWIP_UDP */ 00040 00041 #if LWIP_TCP 00042 LWIP_MEMPOOL(TCP_PCB, MEMP_NUM_TCP_PCB, sizeof(struct tcp_pcb), "TCP_PCB") 00043 LWIP_MEMPOOL(TCP_PCB_LISTEN, MEMP_NUM_TCP_PCB_LISTEN, sizeof(struct tcp_pcb_listen), "TCP_PCB_LISTEN") 00044 LWIP_MEMPOOL(TCP_SEG, MEMP_NUM_TCP_SEG, sizeof(struct tcp_seg), "TCP_SEG") 00045 #endif /* LWIP_TCP */ 00046 00047 #if IP_REASSEMBLY 00048 LWIP_MEMPOOL(REASSDATA, MEMP_NUM_REASSDATA, sizeof(struct ip_reassdata), "REASSDATA") 00049 #endif /* IP_REASSEMBLY */ 00050 00051 #if LWIP_NETCONN 00052 LWIP_MEMPOOL(NETBUF, MEMP_NUM_NETBUF, sizeof(struct netbuf), "NETBUF") 00053 LWIP_MEMPOOL(NETCONN, MEMP_NUM_NETCONN, sizeof(struct netconn), "NETCONN") 00054 #endif /* LWIP_NETCONN */ 00055 00056 #if NO_SYS==0 00057 LWIP_MEMPOOL(TCPIP_MSG_API, MEMP_NUM_TCPIP_MSG_API, sizeof(struct tcpip_msg), "TCPIP_MSG_API") 00058 LWIP_MEMPOOL(TCPIP_MSG_INPKT,MEMP_NUM_TCPIP_MSG_INPKT, sizeof(struct tcpip_msg), "TCPIP_MSG_INPKT") 00059 #endif /* NO_SYS==0 */ 00060 00061 #if ARP_QUEUEING 00062 LWIP_MEMPOOL(ARP_QUEUE, MEMP_NUM_ARP_QUEUE, sizeof(struct etharp_q_entry), "ARP_QUEUE") 00063 #endif /* ARP_QUEUEING */ 00064 00065 #if LWIP_IGMP 00066 LWIP_MEMPOOL(IGMP_GROUP, MEMP_NUM_IGMP_GROUP, sizeof(struct igmp_group), "IGMP_GROUP") 00067 #endif /* LWIP_IGMP */ 00068 00069 #if NO_SYS==0 00070 LWIP_MEMPOOL(SYS_TIMEOUT, MEMP_NUM_SYS_TIMEOUT, sizeof(struct sys_timeo), "SYS_TIMEOUT") 00071 #endif /* NO_SYS==0 */ 00072 00073 00074 /* 00075 * A list of pools of pbuf's used by LWIP. 00076 * 00077 * LWIP_PBUF_MEMPOOL(pool_name, number_elements, pbuf_payload_size, pool_description) 00078 * creates a pool name MEMP_pool_name. description is used in stats.c 00079 * This allocates enough space for the pbuf struct and a payload. 00080 * (Example: pbuf_payload_size=0 allocates only size for the struct) 00081 */ 00082 LWIP_PBUF_MEMPOOL(PBUF, MEMP_NUM_PBUF, 0, "PBUF_REF/ROM") 00083 LWIP_PBUF_MEMPOOL(PBUF_POOL, PBUF_POOL_SIZE, PBUF_POOL_BUFSIZE, "PBUF_POOL") 00084 00085 00086 /* 00087 * Allow for user-defined pools; this must be explicitly set in lwipopts.h 00088 * since the default is to NOT look for lwippools.h 00089 */ 00090 #if MEMP_USE_CUSTOM_POOLS 00091 #include "lwippools.h" 00092 #endif /* MEMP_USE_CUSTOM_POOLS */ 00093 00094 /* 00095 * REQUIRED CLEANUP: Clear up so we don't get "multiply defined" error later 00096 * (#undef is ignored for something that is not defined) 00097 */ 00098 #undef LWIP_MEMPOOL 00099 #undef LWIP_MALLOC_MEMPOOL 00100 #undef LWIP_MALLOC_MEMPOOL_START 00101 #undef LWIP_MALLOC_MEMPOOL_END 00102 #undef LWIP_PBUF_MEMPOOL
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