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Diffstat (limited to 'apps/examples/discover/discover_main.c')
| -rw-r--r-- | apps/examples/discover/discover_main.c | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/apps/examples/discover/discover_main.c b/apps/examples/discover/discover_main.c new file mode 100644 index 000000000..c3acb56df --- /dev/null +++ b/apps/examples/discover/discover_main.c @@ -0,0 +1,188 @@ +/**************************************************************************** + * examples/discover/discover_main.c + * + * Copyright (C) 2012 Max Holtzberg. All rights reserved. + * Copyright (C) 2008, 2011-2012 Gregory Nutt. All rights reserved. + * + * Authors: Max Holtzberg <mh@uvc.de> + * Gregory Nutt <gnutt@nuttx.org> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <stdint.h> +#include <stdio.h> +#include <string.h> +#include <unistd.h> +#include <time.h> +#include <debug.h> + +#include <net/if.h> +#include <nuttx/net/uip/uip.h> +#include <nuttx/net/uip/uip-arp.h> + +#include <apps/netutils/uiplib.h> +#include <apps/netutils/discover.h> + +#ifdef CONFIG_EXAMPLE_DISCOVER_DHCPC +# include <arpa/inet.h> +#endif + +/* Here we include the header file for the application(s) we use in + * our project as defined in the config/<board-name>/defconfig file + */ + +/* DHCPC may be used in conjunction with any other feature (or not) */ + +#ifdef CONFIG_EXAMPLE_DISCOVER_DHCPC +# include <apps/netutils/resolv.h> +# include <apps/netutils/dhcpc.h> +#endif + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * discover_main + ****************************************************************************/ + +int discover_main(int argc, char *argv[]) +{ + /* If this task is excecutated as an NSH built-in function, then the + * network has already been configured by NSH's start-up logic. + */ + +#ifndef CONFIG_NSH_BUILTIN_APPS + struct in_addr addr; +#if defined(CONFIG_EXAMPLE_DISCOVER_DHCPC) || defined(CONFIG_EXAMPLE_DISCOVER_NOMAC) + uint8_t mac[IFHWADDRLEN]; +#endif +#ifdef CONFIG_EXAMPLE_DISCOVER_DHCPC + void *handle; +#endif + +/* Many embedded network interfaces must have a software assigned MAC */ + +#ifdef CONFIG_EXAMPLE_DISCOVER_NOMAC + mac[0] = 0x00; + mac[1] = 0xe0; + mac[2] = 0xde; + mac[3] = 0xad; + mac[4] = 0xbe; + mac[5] = 0xef; + uip_setmacaddr("eth0", mac); +#endif + + /* Set up our host address */ + +#ifdef CONFIG_EXAMPLE_DISCOVER_DHCPC + addr.s_addr = 0; +#else + addr.s_addr = HTONL(CONFIG_EXAMPLE_DISCOVER_IPADDR); +#endif + uip_sethostaddr("eth0", &addr); + + /* Set up the default router address */ + + addr.s_addr = HTONL(CONFIG_EXAMPLE_DISCOVER_DRIPADDR); + uip_setdraddr("eth0", &addr); + + /* Setup the subnet mask */ + + addr.s_addr = HTONL(CONFIG_EXAMPLE_DISCOVER_NETMASK); + uip_setnetmask("eth0", &addr); + +#ifdef CONFIG_EXAMPLE_DISCOVER_DHCPC + /* Set up the resolver */ + + resolv_init(); + + /* Get the MAC address of the NIC */ + + uip_getmacaddr("eth0", mac); + + /* Set up the DHCPC modules */ + + handle = dhcpc_open(&mac, IFHWADDRLEN); + + /* Get an IP address. Note: there is no logic here for renewing the address in this + * example. The address should be renewed in ds.lease_time/2 seconds. + */ + + printf("Getting IP address\n"); + if (handle) + { + struct dhcpc_state ds; + (void)dhcpc_request(handle, &ds); + uip_sethostaddr("eth1", &ds.ipaddr); + + if (ds.netmask.s_addr != 0) + { + uip_setnetmask("eth0", &ds.netmask); + } + + if (ds.default_router.s_addr != 0) + { + uip_setdraddr("eth0", &ds.default_router); + } + + if (ds.dnsaddr.s_addr != 0) + { + resolv_conf(&ds.dnsaddr); + } + + dhcpc_close(handle); + printf("IP: %s\n", inet_ntoa(ds.ipaddr)); + } + +#endif /* CONFIG_EXAMPLE_DISCOVER_DHCPC */ +#endif /* CONFIG_NSH_BUILTIN_APPS */ + + if (discover_start() < 0) + { + ndbg("Could not start discover daemon.\n"); + return ERROR; + } + + return OK; +} + |