Some quick code to use UDP-only (no TCP) with mBed. Echos received packets and sends packets when a button is pressed
netifapi.h
00001 /* 00002 * Redistribution and use in source and binary forms, with or without modification, 00003 * are permitted provided that the following conditions are met: 00004 * 00005 * 1. Redistributions of source code must retain the above copyright notice, 00006 * this list of conditions and the following disclaimer. 00007 * 2. Redistributions in binary form must reproduce the above copyright notice, 00008 * this list of conditions and the following disclaimer in the documentation 00009 * and/or other materials provided with the distribution. 00010 * 3. The name of the author may not be used to endorse or promote products 00011 * derived from this software without specific prior written permission. 00012 * 00013 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 00014 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 00015 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 00016 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 00017 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 00018 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 00019 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 00020 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 00021 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 00022 * OF SUCH DAMAGE. 00023 * 00024 * This file is part of the lwIP TCP/IP stack. 00025 * 00026 */ 00027 00028 #ifndef __LWIP_NETIFAPI_H__ 00029 #define __LWIP_NETIFAPI_H__ 00030 00031 #include "lwip/opt.h" 00032 00033 #if LWIP_NETIF_API /* don't build if not configured for use in lwipopts.h */ 00034 00035 #include "lwip/sys.h" 00036 #include "lwip/netif.h" 00037 #include "lwip/dhcp.h " 00038 #include "lwip/autoip.h" 00039 00040 #ifdef __cplusplus 00041 extern "C" { 00042 #endif 00043 00044 struct netifapi_msg_msg { 00045 #if !LWIP_TCPIP_CORE_LOCKING 00046 sys_sem_t sem; 00047 #endif /* !LWIP_TCPIP_CORE_LOCKING */ 00048 err_t err; 00049 struct netif *netif; 00050 union { 00051 struct { 00052 struct ip_addr *ipaddr; 00053 struct ip_addr *netmask; 00054 struct ip_addr *gw; 00055 void *state; 00056 err_t (* init) (struct netif *netif); 00057 err_t (* input)(struct pbuf *p, struct netif *netif); 00058 } add; 00059 struct { 00060 void (* voidfunc)(struct netif *netif); 00061 err_t (* errtfunc)(struct netif *netif); 00062 } common; 00063 } msg; 00064 }; 00065 00066 struct netifapi_msg { 00067 void (* function)(struct netifapi_msg_msg *msg); 00068 struct netifapi_msg_msg msg; 00069 }; 00070 00071 00072 /* API for application */ 00073 err_t netifapi_netif_add ( struct netif *netif, 00074 struct ip_addr *ipaddr, 00075 struct ip_addr *netmask, 00076 struct ip_addr *gw, 00077 void *state, 00078 err_t (* init)(struct netif *netif), 00079 err_t (* input)(struct pbuf *p, struct netif *netif) ); 00080 00081 err_t netifapi_netif_set_addr ( struct netif *netif, 00082 struct ip_addr *ipaddr, 00083 struct ip_addr *netmask, 00084 struct ip_addr *gw ); 00085 00086 err_t netifapi_netif_common ( struct netif *netif, 00087 void (* voidfunc)(struct netif *netif), 00088 err_t (* errtfunc)(struct netif *netif) ); 00089 00090 #define netifapi_netif_remove(n) netifapi_netif_common(n, netif_remove, NULL) 00091 #define netifapi_netif_set_up(n) netifapi_netif_common(n, netif_set_up, NULL) 00092 #define netifapi_netif_set_down(n) netifapi_netif_common(n, netif_set_down, NULL) 00093 #define netifapi_netif_set_default(n) netifapi_netif_common(n, netif_set_default, NULL) 00094 #define netifapi_dhcp_start(n) netifapi_netif_common(n, NULL, dhcp_start) 00095 #define netifapi_dhcp_stop(n) netifapi_netif_common(n, dhcp_stop, NULL) 00096 #define netifapi_autoip_start(n) netifapi_netif_common(n, NULL, autoip_start) 00097 #define netifapi_autoip_stop(n) netifapi_netif_common(n, NULL, autoip_stop) 00098 00099 #ifdef __cplusplus 00100 } 00101 #endif 00102 00103 #endif /* LWIP_NETIF_API */ 00104 00105 #endif /* __LWIP_NETIFAPI_H__ */
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