IBM Watson IoT / Mbed OS IBMIoTClientEthernetExample

Contains example code to connect the mbed LPC1768 or FRDM-K64F devices to the IBM Internet of Things Cloud service via ethernet.

Dependencies:   C12832 MQTT LM75B MMA7660

Dependents:   MFT_IoT_demo_USB400 IBM_RFID

EthernetInterface/lwip/netif/ethernetif.c@6:37b6d0d56190, 2014-08-20 (annotated)

Committer:
samdanbury
Date:
Wed Aug 20 12:45:14 2014 +0000
Revision:
6:37b6d0d56190
Code completely changed to improve the structure, flow and memory usage of the application

Who changed what in which revision?

UserRevisionLine numberNew contents of line
samdanbury 6:37b6d0d56190 1 /**
samdanbury 6:37b6d0d56190 2 * @file
samdanbury 6:37b6d0d56190 3 * Ethernet Interface Skeleton
samdanbury 6:37b6d0d56190 4 *
samdanbury 6:37b6d0d56190 5 */
samdanbury 6:37b6d0d56190 6
samdanbury 6:37b6d0d56190 7 /*
samdanbury 6:37b6d0d56190 8 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
samdanbury 6:37b6d0d56190 9 * All rights reserved.
samdanbury 6:37b6d0d56190 10 *
samdanbury 6:37b6d0d56190 11 * Redistribution and use in source and binary forms, with or without modification,
samdanbury 6:37b6d0d56190 12 * are permitted provided that the following conditions are met:
samdanbury 6:37b6d0d56190 13 *
samdanbury 6:37b6d0d56190 14 * 1. Redistributions of source code must retain the above copyright notice,
samdanbury 6:37b6d0d56190 15 * this list of conditions and the following disclaimer.
samdanbury 6:37b6d0d56190 16 * 2. Redistributions in binary form must reproduce the above copyright notice,
samdanbury 6:37b6d0d56190 17 * this list of conditions and the following disclaimer in the documentation
samdanbury 6:37b6d0d56190 18 * and/or other materials provided with the distribution.
samdanbury 6:37b6d0d56190 19 * 3. The name of the author may not be used to endorse or promote products
samdanbury 6:37b6d0d56190 20 * derived from this software without specific prior written permission.
samdanbury 6:37b6d0d56190 21 *
samdanbury 6:37b6d0d56190 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
samdanbury 6:37b6d0d56190 23 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
samdanbury 6:37b6d0d56190 24 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
samdanbury 6:37b6d0d56190 25 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
samdanbury 6:37b6d0d56190 26 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
samdanbury 6:37b6d0d56190 27 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
samdanbury 6:37b6d0d56190 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
samdanbury 6:37b6d0d56190 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
samdanbury 6:37b6d0d56190 30 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
samdanbury 6:37b6d0d56190 31 * OF SUCH DAMAGE.
samdanbury 6:37b6d0d56190 32 *
samdanbury 6:37b6d0d56190 33 * This file is part of the lwIP TCP/IP stack.
samdanbury 6:37b6d0d56190 34 *
samdanbury 6:37b6d0d56190 35 * Author: Adam Dunkels <adam@sics.se>
samdanbury 6:37b6d0d56190 36 *
samdanbury 6:37b6d0d56190 37 */
samdanbury 6:37b6d0d56190 38
samdanbury 6:37b6d0d56190 39 /*
samdanbury 6:37b6d0d56190 40 * This file is a skeleton for developing Ethernet network interface
samdanbury 6:37b6d0d56190 41 * drivers for lwIP. Add code to the low_level functions and do a
samdanbury 6:37b6d0d56190 42 * search-and-replace for the word "ethernetif" to replace it with
samdanbury 6:37b6d0d56190 43 * something that better describes your network interface.
samdanbury 6:37b6d0d56190 44 */
samdanbury 6:37b6d0d56190 45
samdanbury 6:37b6d0d56190 46 #include "lwip/opt.h"
samdanbury 6:37b6d0d56190 47
samdanbury 6:37b6d0d56190 48 #if 0 /* don't build, this is only a skeleton, see previous comment */
samdanbury 6:37b6d0d56190 49
samdanbury 6:37b6d0d56190 50 #include "lwip/def.h"
samdanbury 6:37b6d0d56190 51 #include "lwip/mem.h"
samdanbury 6:37b6d0d56190 52 #include "lwip/pbuf.h"
samdanbury 6:37b6d0d56190 53 #include "lwip/sys.h"
samdanbury 6:37b6d0d56190 54 #include <lwip/stats.h>
samdanbury 6:37b6d0d56190 55 #include <lwip/snmp.h>
samdanbury 6:37b6d0d56190 56 #include "netif/etharp.h"
samdanbury 6:37b6d0d56190 57 #include "netif/ppp_oe.h"
samdanbury 6:37b6d0d56190 58
samdanbury 6:37b6d0d56190 59 /* Define those to better describe your network interface. */
samdanbury 6:37b6d0d56190 60 #define IFNAME0 'e'
samdanbury 6:37b6d0d56190 61 #define IFNAME1 'n'
samdanbury 6:37b6d0d56190 62
samdanbury 6:37b6d0d56190 63 /**
samdanbury 6:37b6d0d56190 64 * Helper struct to hold private data used to operate your ethernet interface.
samdanbury 6:37b6d0d56190 65 * Keeping the ethernet address of the MAC in this struct is not necessary
samdanbury 6:37b6d0d56190 66 * as it is already kept in the struct netif.
samdanbury 6:37b6d0d56190 67 * But this is only an example, anyway...
samdanbury 6:37b6d0d56190 68 */
samdanbury 6:37b6d0d56190 69 struct ethernetif {
samdanbury 6:37b6d0d56190 70 struct eth_addr *ethaddr;
samdanbury 6:37b6d0d56190 71 /* Add whatever per-interface state that is needed here. */
samdanbury 6:37b6d0d56190 72 };
samdanbury 6:37b6d0d56190 73
samdanbury 6:37b6d0d56190 74 /* Forward declarations. */
samdanbury 6:37b6d0d56190 75 static void ethernetif_input(struct netif *netif);
samdanbury 6:37b6d0d56190 76
samdanbury 6:37b6d0d56190 77 /**
samdanbury 6:37b6d0d56190 78 * In this function, the hardware should be initialized.
samdanbury 6:37b6d0d56190 79 * Called from ethernetif_init().
samdanbury 6:37b6d0d56190 80 *
samdanbury 6:37b6d0d56190 81 * @param netif the already initialized lwip network interface structure
samdanbury 6:37b6d0d56190 82 * for this ethernetif
samdanbury 6:37b6d0d56190 83 */
samdanbury 6:37b6d0d56190 84 static void
samdanbury 6:37b6d0d56190 85 low_level_init(struct netif *netif)
samdanbury 6:37b6d0d56190 86 {
samdanbury 6:37b6d0d56190 87 struct ethernetif *ethernetif = netif->state;
samdanbury 6:37b6d0d56190 88
samdanbury 6:37b6d0d56190 89 /* set MAC hardware address length */
samdanbury 6:37b6d0d56190 90 netif->hwaddr_len = ETHARP_HWADDR_LEN;
samdanbury 6:37b6d0d56190 91
samdanbury 6:37b6d0d56190 92 /* set MAC hardware address */
samdanbury 6:37b6d0d56190 93 netif->hwaddr[0] = ;
samdanbury 6:37b6d0d56190 94 ...
samdanbury 6:37b6d0d56190 95 netif->hwaddr[5] = ;
samdanbury 6:37b6d0d56190 96
samdanbury 6:37b6d0d56190 97 /* maximum transfer unit */
samdanbury 6:37b6d0d56190 98 netif->mtu = 1500;
samdanbury 6:37b6d0d56190 99
samdanbury 6:37b6d0d56190 100 /* device capabilities */
samdanbury 6:37b6d0d56190 101 /* don't set NETIF_FLAG_ETHARP if this device is not an ethernet one */
samdanbury 6:37b6d0d56190 102 netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_LINK_UP;
samdanbury 6:37b6d0d56190 103
samdanbury 6:37b6d0d56190 104 /* Do whatever else is needed to initialize interface. */
samdanbury 6:37b6d0d56190 105 }
samdanbury 6:37b6d0d56190 106
samdanbury 6:37b6d0d56190 107 /**
samdanbury 6:37b6d0d56190 108 * This function should do the actual transmission of the packet. The packet is
samdanbury 6:37b6d0d56190 109 * contained in the pbuf that is passed to the function. This pbuf
samdanbury 6:37b6d0d56190 110 * might be chained.
samdanbury 6:37b6d0d56190 111 *
samdanbury 6:37b6d0d56190 112 * @param netif the lwip network interface structure for this ethernetif
samdanbury 6:37b6d0d56190 113 * @param p the MAC packet to send (e.g. IP packet including MAC addresses and type)
samdanbury 6:37b6d0d56190 114 * @return ERR_OK if the packet could be sent
samdanbury 6:37b6d0d56190 115 * an err_t value if the packet couldn't be sent
samdanbury 6:37b6d0d56190 116 *
samdanbury 6:37b6d0d56190 117 * @note Returning ERR_MEM here if a DMA queue of your MAC is full can lead to
samdanbury 6:37b6d0d56190 118 * strange results. You might consider waiting for space in the DMA queue
samdanbury 6:37b6d0d56190 119 * to become availale since the stack doesn't retry to send a packet
samdanbury 6:37b6d0d56190 120 * dropped because of memory failure (except for the TCP timers).
samdanbury 6:37b6d0d56190 121 */
samdanbury 6:37b6d0d56190 122
samdanbury 6:37b6d0d56190 123 static err_t
samdanbury 6:37b6d0d56190 124 low_level_output(struct netif *netif, struct pbuf *p)
samdanbury 6:37b6d0d56190 125 {
samdanbury 6:37b6d0d56190 126 struct ethernetif *ethernetif = netif->state;
samdanbury 6:37b6d0d56190 127 struct pbuf *q;
samdanbury 6:37b6d0d56190 128
samdanbury 6:37b6d0d56190 129 initiate transfer();
samdanbury 6:37b6d0d56190 130
samdanbury 6:37b6d0d56190 131 #if ETH_PAD_SIZE
samdanbury 6:37b6d0d56190 132 pbuf_header(p, -ETH_PAD_SIZE); /* drop the padding word */
samdanbury 6:37b6d0d56190 133 #endif
samdanbury 6:37b6d0d56190 134
samdanbury 6:37b6d0d56190 135 for(q = p; q != NULL; q = q->next) {
samdanbury 6:37b6d0d56190 136 /* Send the data from the pbuf to the interface, one pbuf at a
samdanbury 6:37b6d0d56190 137 time. The size of the data in each pbuf is kept in the ->len
samdanbury 6:37b6d0d56190 138 variable. */
samdanbury 6:37b6d0d56190 139 send data from(q->payload, q->len);
samdanbury 6:37b6d0d56190 140 }
samdanbury 6:37b6d0d56190 141
samdanbury 6:37b6d0d56190 142 signal that packet should be sent();
samdanbury 6:37b6d0d56190 143
samdanbury 6:37b6d0d56190 144 #if ETH_PAD_SIZE
samdanbury 6:37b6d0d56190 145 pbuf_header(p, ETH_PAD_SIZE); /* reclaim the padding word */
samdanbury 6:37b6d0d56190 146 #endif
samdanbury 6:37b6d0d56190 147
samdanbury 6:37b6d0d56190 148 LINK_STATS_INC(link.xmit);
samdanbury 6:37b6d0d56190 149
samdanbury 6:37b6d0d56190 150 return ERR_OK;
samdanbury 6:37b6d0d56190 151 }
samdanbury 6:37b6d0d56190 152
samdanbury 6:37b6d0d56190 153 /**
samdanbury 6:37b6d0d56190 154 * Should allocate a pbuf and transfer the bytes of the incoming
samdanbury 6:37b6d0d56190 155 * packet from the interface into the pbuf.
samdanbury 6:37b6d0d56190 156 *
samdanbury 6:37b6d0d56190 157 * @param netif the lwip network interface structure for this ethernetif
samdanbury 6:37b6d0d56190 158 * @return a pbuf filled with the received packet (including MAC header)
samdanbury 6:37b6d0d56190 159 * NULL on memory error
samdanbury 6:37b6d0d56190 160 */
samdanbury 6:37b6d0d56190 161 static struct pbuf *
samdanbury 6:37b6d0d56190 162 low_level_input(struct netif *netif)
samdanbury 6:37b6d0d56190 163 {
samdanbury 6:37b6d0d56190 164 struct ethernetif *ethernetif = netif->state;
samdanbury 6:37b6d0d56190 165 struct pbuf *p, *q;
samdanbury 6:37b6d0d56190 166 u16_t len;
samdanbury 6:37b6d0d56190 167
samdanbury 6:37b6d0d56190 168 /* Obtain the size of the packet and put it into the "len"
samdanbury 6:37b6d0d56190 169 variable. */
samdanbury 6:37b6d0d56190 170 len = ;
samdanbury 6:37b6d0d56190 171
samdanbury 6:37b6d0d56190 172 #if ETH_PAD_SIZE
samdanbury 6:37b6d0d56190 173 len += ETH_PAD_SIZE; /* allow room for Ethernet padding */
samdanbury 6:37b6d0d56190 174 #endif
samdanbury 6:37b6d0d56190 175
samdanbury 6:37b6d0d56190 176 /* We allocate a pbuf chain of pbufs from the pool. */
samdanbury 6:37b6d0d56190 177 p = pbuf_alloc(PBUF_RAW, len, PBUF_POOL);
samdanbury 6:37b6d0d56190 178
samdanbury 6:37b6d0d56190 179 if (p != NULL) {
samdanbury 6:37b6d0d56190 180
samdanbury 6:37b6d0d56190 181 #if ETH_PAD_SIZE
samdanbury 6:37b6d0d56190 182 pbuf_header(p, -ETH_PAD_SIZE); /* drop the padding word */
samdanbury 6:37b6d0d56190 183 #endif
samdanbury 6:37b6d0d56190 184
samdanbury 6:37b6d0d56190 185 /* We iterate over the pbuf chain until we have read the entire
samdanbury 6:37b6d0d56190 186 * packet into the pbuf. */
samdanbury 6:37b6d0d56190 187 for(q = p; q != NULL; q = q->next) {
samdanbury 6:37b6d0d56190 188 /* Read enough bytes to fill this pbuf in the chain. The
samdanbury 6:37b6d0d56190 189 * available data in the pbuf is given by the q->len
samdanbury 6:37b6d0d56190 190 * variable.
samdanbury 6:37b6d0d56190 191 * This does not necessarily have to be a memcpy, you can also preallocate
samdanbury 6:37b6d0d56190 192 * pbufs for a DMA-enabled MAC and after receiving truncate it to the
samdanbury 6:37b6d0d56190 193 * actually received size. In this case, ensure the tot_len member of the
samdanbury 6:37b6d0d56190 194 * pbuf is the sum of the chained pbuf len members.
samdanbury 6:37b6d0d56190 195 */
samdanbury 6:37b6d0d56190 196 read data into(q->payload, q->len);
samdanbury 6:37b6d0d56190 197 }
samdanbury 6:37b6d0d56190 198 acknowledge that packet has been read();
samdanbury 6:37b6d0d56190 199
samdanbury 6:37b6d0d56190 200 #if ETH_PAD_SIZE
samdanbury 6:37b6d0d56190 201 pbuf_header(p, ETH_PAD_SIZE); /* reclaim the padding word */
samdanbury 6:37b6d0d56190 202 #endif
samdanbury 6:37b6d0d56190 203
samdanbury 6:37b6d0d56190 204 LINK_STATS_INC(link.recv);
samdanbury 6:37b6d0d56190 205 } else {
samdanbury 6:37b6d0d56190 206 drop packet();
samdanbury 6:37b6d0d56190 207 LINK_STATS_INC(link.memerr);
samdanbury 6:37b6d0d56190 208 LINK_STATS_INC(link.drop);
samdanbury 6:37b6d0d56190 209 }
samdanbury 6:37b6d0d56190 210
samdanbury 6:37b6d0d56190 211 return p;
samdanbury 6:37b6d0d56190 212 }
samdanbury 6:37b6d0d56190 213
samdanbury 6:37b6d0d56190 214 /**
samdanbury 6:37b6d0d56190 215 * This function should be called when a packet is ready to be read
samdanbury 6:37b6d0d56190 216 * from the interface. It uses the function low_level_input() that
samdanbury 6:37b6d0d56190 217 * should handle the actual reception of bytes from the network
samdanbury 6:37b6d0d56190 218 * interface. Then the type of the received packet is determined and
samdanbury 6:37b6d0d56190 219 * the appropriate input function is called.
samdanbury 6:37b6d0d56190 220 *
samdanbury 6:37b6d0d56190 221 * @param netif the lwip network interface structure for this ethernetif
samdanbury 6:37b6d0d56190 222 */
samdanbury 6:37b6d0d56190 223 static void
samdanbury 6:37b6d0d56190 224 ethernetif_input(struct netif *netif)
samdanbury 6:37b6d0d56190 225 {
samdanbury 6:37b6d0d56190 226 struct ethernetif *ethernetif;
samdanbury 6:37b6d0d56190 227 struct eth_hdr *ethhdr;
samdanbury 6:37b6d0d56190 228 struct pbuf *p;
samdanbury 6:37b6d0d56190 229
samdanbury 6:37b6d0d56190 230 ethernetif = netif->state;
samdanbury 6:37b6d0d56190 231
samdanbury 6:37b6d0d56190 232 /* move received packet into a new pbuf */
samdanbury 6:37b6d0d56190 233 p = low_level_input(netif);
samdanbury 6:37b6d0d56190 234 /* no packet could be read, silently ignore this */
samdanbury 6:37b6d0d56190 235 if (p == NULL) return;
samdanbury 6:37b6d0d56190 236 /* points to packet payload, which starts with an Ethernet header */
samdanbury 6:37b6d0d56190 237 ethhdr = p->payload;
samdanbury 6:37b6d0d56190 238
samdanbury 6:37b6d0d56190 239 switch (htons(ethhdr->type)) {
samdanbury 6:37b6d0d56190 240 /* IP or ARP packet? */
samdanbury 6:37b6d0d56190 241 case ETHTYPE_IP:
samdanbury 6:37b6d0d56190 242 case ETHTYPE_ARP:
samdanbury 6:37b6d0d56190 243 #if PPPOE_SUPPORT
samdanbury 6:37b6d0d56190 244 /* PPPoE packet? */
samdanbury 6:37b6d0d56190 245 case ETHTYPE_PPPOEDISC:
samdanbury 6:37b6d0d56190 246 case ETHTYPE_PPPOE:
samdanbury 6:37b6d0d56190 247 #endif /* PPPOE_SUPPORT */
samdanbury 6:37b6d0d56190 248 /* full packet send to tcpip_thread to process */
samdanbury 6:37b6d0d56190 249 if (netif->input(p, netif)!=ERR_OK)
samdanbury 6:37b6d0d56190 250 { LWIP_DEBUGF(NETIF_DEBUG, ("ethernetif_input: IP input error\n"));
samdanbury 6:37b6d0d56190 251 pbuf_free(p);
samdanbury 6:37b6d0d56190 252 p = NULL;
samdanbury 6:37b6d0d56190 253 }
samdanbury 6:37b6d0d56190 254 break;
samdanbury 6:37b6d0d56190 255
samdanbury 6:37b6d0d56190 256 default:
samdanbury 6:37b6d0d56190 257 pbuf_free(p);
samdanbury 6:37b6d0d56190 258 p = NULL;
samdanbury 6:37b6d0d56190 259 break;
samdanbury 6:37b6d0d56190 260 }
samdanbury 6:37b6d0d56190 261 }
samdanbury 6:37b6d0d56190 262
samdanbury 6:37b6d0d56190 263 /**
samdanbury 6:37b6d0d56190 264 * Should be called at the beginning of the program to set up the
samdanbury 6:37b6d0d56190 265 * network interface. It calls the function low_level_init() to do the
samdanbury 6:37b6d0d56190 266 * actual setup of the hardware.
samdanbury 6:37b6d0d56190 267 *
samdanbury 6:37b6d0d56190 268 * This function should be passed as a parameter to netif_add().
samdanbury 6:37b6d0d56190 269 *
samdanbury 6:37b6d0d56190 270 * @param netif the lwip network interface structure for this ethernetif
samdanbury 6:37b6d0d56190 271 * @return ERR_OK if the loopif is initialized
samdanbury 6:37b6d0d56190 272 * ERR_MEM if private data couldn't be allocated
samdanbury 6:37b6d0d56190 273 * any other err_t on error
samdanbury 6:37b6d0d56190 274 */
samdanbury 6:37b6d0d56190 275 err_t
samdanbury 6:37b6d0d56190 276 ethernetif_init(struct netif *netif)
samdanbury 6:37b6d0d56190 277 {
samdanbury 6:37b6d0d56190 278 struct ethernetif *ethernetif;
samdanbury 6:37b6d0d56190 279
samdanbury 6:37b6d0d56190 280 LWIP_ASSERT("netif != NULL", (netif != NULL));
samdanbury 6:37b6d0d56190 281
samdanbury 6:37b6d0d56190 282 ethernetif = mem_malloc(sizeof(struct ethernetif));
samdanbury 6:37b6d0d56190 283 if (ethernetif == NULL) {
samdanbury 6:37b6d0d56190 284 LWIP_DEBUGF(NETIF_DEBUG, ("ethernetif_init: out of memory\n"));
samdanbury 6:37b6d0d56190 285 return ERR_MEM;
samdanbury 6:37b6d0d56190 286 }
samdanbury 6:37b6d0d56190 287
samdanbury 6:37b6d0d56190 288 #if LWIP_NETIF_HOSTNAME
samdanbury 6:37b6d0d56190 289 /* Initialize interface hostname */
samdanbury 6:37b6d0d56190 290 netif->hostname = "lwip";
samdanbury 6:37b6d0d56190 291 #endif /* LWIP_NETIF_HOSTNAME */
samdanbury 6:37b6d0d56190 292
samdanbury 6:37b6d0d56190 293 /*
samdanbury 6:37b6d0d56190 294 * Initialize the snmp variables and counters inside the struct netif.
samdanbury 6:37b6d0d56190 295 * The last argument should be replaced with your link speed, in units
samdanbury 6:37b6d0d56190 296 * of bits per second.
samdanbury 6:37b6d0d56190 297 */
samdanbury 6:37b6d0d56190 298 NETIF_INIT_SNMP(netif, snmp_ifType_ethernet_csmacd, LINK_SPEED_OF_YOUR_NETIF_IN_BPS);
samdanbury 6:37b6d0d56190 299
samdanbury 6:37b6d0d56190 300 netif->state = ethernetif;
samdanbury 6:37b6d0d56190 301 netif->name[0] = IFNAME0;
samdanbury 6:37b6d0d56190 302 netif->name[1] = IFNAME1;
samdanbury 6:37b6d0d56190 303 /* We directly use etharp_output() here to save a function call.
samdanbury 6:37b6d0d56190 304 * You can instead declare your own function an call etharp_output()
samdanbury 6:37b6d0d56190 305 * from it if you have to do some checks before sending (e.g. if link
samdanbury 6:37b6d0d56190 306 * is available...) */
samdanbury 6:37b6d0d56190 307 netif->output = etharp_output;
samdanbury 6:37b6d0d56190 308 netif->linkoutput = low_level_output;
samdanbury 6:37b6d0d56190 309
samdanbury 6:37b6d0d56190 310 ethernetif->ethaddr = (struct eth_addr *)&(netif->hwaddr[0]);
samdanbury 6:37b6d0d56190 311
samdanbury 6:37b6d0d56190 312 /* initialize the hardware */
samdanbury 6:37b6d0d56190 313 low_level_init(netif);
samdanbury 6:37b6d0d56190 314
samdanbury 6:37b6d0d56190 315 return ERR_OK;
samdanbury 6:37b6d0d56190 316 }
samdanbury 6:37b6d0d56190 317
samdanbury 6:37b6d0d56190 318 #endif /* 0 */