Some quick code to use UDP-only (no TCP) with mBed. Echos received packets and sends packets when a button is pressed

Dependencies:   mbed

Revision:
0:a548a085de55
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Core/lwipopts.h	Sun Mar 14 00:54:12 2010 +0000
@@ -0,0 +1,81 @@
+#ifndef LWIPOPTS_H
+#define LWIPOPTS_H
+
+#include <string.h>
+#include <stdlib.h>
+//#include <mbed.h>
+#include <stdio.h>
+
+#ifdef __cplusplus
+using namespace std;
+#endif
+
+// Application specific lwIP Options.
+#define IPv6                            0
+#define NO_SYS                          1
+#define LWIP_ARP                        1
+#define LWIP_RAW                        0
+#define LWIP_UDP                        1
+#define LWIP_TCP                        1
+#define LWIP_DNS                        1
+#define LWIP_DHCP                       1
+#define LWIP_IGMP                       0
+#define LWIP_SNMP                       0
+#define LWIP_SOCKET                     0
+#define LWIP_NETCONN                    0
+#define LWIP_AUTOIP                     0
+#define LWIP_CALLBACK_API               1
+
+#define MEM_LIBC_MALLOC                 1
+#define MEMP_MEM_MALLOC                 1
+#define MEM_ALIGNMENT                   4
+//#define MEM_SIZE                     5000
+#define MEM_SIZE                      10000
+//#define MEM_SIZE            (EMAC_MEM_SIZE - (2 * SIZEOF_STRUCT_MEM) - MEM_ALIGNMENT)
+#define MEM_POSITION                    __attribute((section("AHBSRAM1"),aligned))
+//        EMAC_MEM_ADDR
+
+#define ARP_QUEUEING                    0
+#define LWIP_NETIF_HOSTNAME             1
+
+#define ARP_TABLE_SIZE                  4
+
+#define DNS_TABLE_SIZE                  1
+#define DNS_USES_STATIC_BUF             0
+// 0 - Stack
+// 1 - RW-MEM
+// 2 - Heap
+
+#define IP_FRAG_USES_STATIC_BUF         0
+#define LWIP_STATS                      0
+
+#define DNS_LOCAL_HOSTLIST_IS_DYNAMIC   1
+
+#define TCP_SND_BUF                  2000
+#define TCP_MSS                     0x276
+//0x300
+//#define TCP_SND_QUEUELEN                    (2 * TCP_SND_BUF/TCP_MSS)
+#define TCP_SND_QUEUELEN               16
+#define MEMP_NUM_TCP_PCB                5
+#define MEMP_NUM_TCP_PCB_LISTEN         8
+#define MEMP_NUM_TCP_SEG               20
+#define MEMP_NUM_PBUF                  16
+#define PBUF_POOL_SIZE                  6
+
+#ifndef HOSTNAME
+#define HOSTNAME "mbed-c3p0"
+#endif
+
+#define LWIP_DEBUG               1
+#define LWIP_DBG_TYPES_ON     0x03 //~0x0
+#define LWIP_DBG_MIN_LEVEL       0
+#define MEM_DEBUG (LWIP_DBG_ON | LWIP_DBG_LEVEL_WARNING)
+//#define TCP_INPUT_DEBUG (LWIP_DBG_ON | LWIP_DBG_LEVEL_WARNING)
+//#define TCP_OUTPUT_DEBUG    (LWIP_DBG_ON | LWIP_DBG_LEVEL_WARNING)
+//#define NETIF_DEBUG     (LWIP_DBG_ON | LWIP_DBG_LEVEL_WARNING)
+//#define DHCP_DEBUG      (LWIP_DBG_ON | LWIP_DBG_LEVEL_WARNING)
+//#define IP_DEBUG        (LWIP_DBG_ON | LWIP_DBG_LEVEL_WARNING)
+//#define TCP_DEBUG       (LWIP_DBG_ON | LWIP_DBG_LEVEL_WARNING)
+//#define TCP_CWND_DEBUG    (LWIP_DBG_ON | LWIP_DBG_LEVEL_WARNING)
+
+#endif