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Diffstat (limited to 'apps/examples/wlan/wlan_main.c')
-rw-r--r-- | apps/examples/wlan/wlan_main.c | 306 |
1 files changed, 306 insertions, 0 deletions
diff --git a/apps/examples/wlan/wlan_main.c b/apps/examples/wlan/wlan_main.c new file mode 100644 index 000000000..dcb8c770a --- /dev/null +++ b/apps/examples/wlan/wlan_main.c @@ -0,0 +1,306 @@ +/**************************************************************************** + * examples/wlan/wlan_main.c + * + * Copyright (C) 2011 Gregory Nutt. All rights reserved. + * Authors: Gregory Nutt <gnutt@nuttx.org> + * Rafael Noronha <rafael@pdsolucoes.com.br> + * + * 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 Gregory Nutt 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 <nuttx/config.h> + +#include <sys/types.h> +#include <sys/stat.h> +#include <sys/ioctl.h> + +#include <stdint.h> +#include <stdio.h> +#include <string.h> +#include <unistd.h> +#include <fcntl.h> +#include <time.h> +#include <sched.h> +#include <errno.h> +#include <debug.h> + +#include <nuttx/usb/usbhost.h> + +#include <net/if.h> +#include <nuttx/net/uip/uip.h> +#include <nuttx/net/uip/uip-arp.h> + +#include <apps/netutils/uiplib.h> + +/* DHCPC may be used in conjunction with any other feature (or not) */ + +#ifdef CONFIG_EXAMPLE_WLAN_DHCPC +# include <arpa/inet.h> +# include <apps/netutils/resolv.h> +# include <apps/netutils/dhcpc.h> +#endif + +/**************************************************************************** + * Definitions + ****************************************************************************/ +/* Configuration ************************************************************/ + +/* Sanity checking */ + +#ifndef CONFIG_USBHOST +# error "CONFIG_USBHOST is not defined" +#endif + +#ifdef CONFIG_USBHOST_BULK_DISABLE +# error "Bulk endpoints are disabled (CONFIG_USBHOST_BULK_DISABLE)" +#endif + +#ifndef CONFIG_NFILE_DESCRIPTORS +# error "CONFIG_NFILE_DESCRIPTORS > 0 needed" +#endif + +/* Provide some default values for other configuration settings */ + +#ifndef CONFIG_EXAMPLES_WLAN_DEFPRIO +# define CONFIG_EXAMPLES_WLAN_DEFPRIO 50 +#endif + +#ifndef CONFIG_EXAMPLES_WLAN_STACKSIZE +# define CONFIG_EXAMPLES_WLAN_STACKSIZE 1024 +#endif + +#ifndef CONFIG_EXAMPLES_WLAN_DEVNAME +# define CONFIG_EXAMPLES_WLAN_DEVNAME "wlan0" +#endif + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +static struct usbhost_driver_s *g_drvr; + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: wlan_bringup + * + * Description: + * Wait for USB devices to be connected. + * + ****************************************************************************/ + +static inline void wlan_bringup(void) +{ +#if defined(CONFIG_EXAMPLE_WLAN_DHCPC) || defined(CONFIG_EXAMPLE_WLAN_NOMAC) + uint8_t mac[IFHWADDRLEN]; +#endif + struct in_addr addr; +#ifdef CONFIG_EXAMPLE_WLAN_DHCPC + void *handle; +#endif + + /* Many embedded network interfaces must have a software assigned + * MAC + */ + +#ifdef CONFIG_EXAMPLE_WLAN_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 the default router address */ + + addr.s_addr = HTONL(CONFIG_EXAMPLE_WLAN_DRIPADDR); + uip_setdraddr("eth0", &addr); + + /* Setup the subnet mask */ + + addr.s_addr = HTONL(CONFIG_EXAMPLE_WLAN_NETMASK); + uip_setnetmask("eth0", &addr); + + /* Set up our host address */ + +#ifdef CONFIG_EXAMPLE_WLAN_DHCPC + addr.s_addr = 0; +#else + addr.s_addr = HTONL(CONFIG_EXAMPLE_WLAN_IPADDR); +#endif + uip_sethostaddr("eth0", &addr); + +#ifdef CONFIG_EXAMPLE_WLAN_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 +} + +/**************************************************************************** + * Name: wlan_waiter + * + * Description: + * Wait for USB devices to be connected. + * + ****************************************************************************/ + +static int wlan_waiter(int argc, char *argv[]) +{ + bool connected = false; + int ret; + + printf("wlan_waiter: Running\n"); + for (;;) + { + /* Wait for the device to change state */ + + ret = DRVR_WAIT(g_drvr, connected); + DEBUGASSERT(ret == OK); + + connected = !connected; + printf("wlan_waiter: %s\n", connected ? "connected" : "disconnected"); + + /* Did we just become connected? */ + + if (connected) + { + /* Yes.. enumerate the newly connected device */ + + ret = DRVR_ENUMERATE(g_drvr); + + /* If the enumeration was successful, then bring up the interface */ + + wlan_bringup(); + } + } + + /* Keep the compiler from complaining */ + + return 0; +} + +/**************************************************************************** + * Name: wlan_main + ****************************************************************************/ + +int wlan_main(int argc, char *argv[]) +{ + pid_t pid; + int ret; + + /* First, register all of the USB host Wireless LAN drivers */ + + printf("wlan_main: Register drivers\n"); + ret = usbhost_wlaninit(); + if (ret != OK) + { + printf("wlan_main: Failed to register the WLAN driver\n"); + } + + /* Then get an instance of the USB host interface */ + + printf("wlan_main: Initialize USB host WLAN driver\n"); + g_drvr = usbhost_initialize(0); + if (g_drvr) + { + /* Start a thread to handle device connection. */ + + printf("wlan_main: Start wlan_waiter\n"); + +#ifndef CONFIG_CUSTOM_STACK + pid = task_create("usbhost", CONFIG_EXAMPLES_WLAN_DEFPRIO, + CONFIG_EXAMPLES_WLAN_STACKSIZE, + (main_t)wlan_waiter, (const char **)NULL); +#else + pid = task_create("usbhost", CONFIG_EXAMPLES_WLAN_DEFPRIO, + (main_t)wlan_waiter, (const char **)NULL); +#endif + + /* Now just sleep. Eventually logic here will perform the device test. */ + + for (;;) + { + sleep(5); + printf("usert_start: Still alive\n"); + } + } + return 0; +} |