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author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2011-02-12 17:30:49 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2011-02-12 17:30:49 +0000 |
commit | 48cc823a33aef8f57a4efa50f06b09dd2f1a3cdd (patch) | |
tree | fcb8dff52a1de3def791c9ce234eb58ac5ac8881 /nuttx/examples/wlan/wlan_main.c | |
parent | fb469693dc16682c912f157cfc4ccc8870d226f4 (diff) | |
download | px4-nuttx-48cc823a33aef8f57a4efa50f06b09dd2f1a3cdd.tar.gz px4-nuttx-48cc823a33aef8f57a4efa50f06b09dd2f1a3cdd.tar.bz2 px4-nuttx-48cc823a33aef8f57a4efa50f06b09dd2f1a3cdd.zip |
Add examples/wlan
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3283 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/examples/wlan/wlan_main.c')
-rwxr-xr-x | nuttx/examples/wlan/wlan_main.c | 240 |
1 files changed, 240 insertions, 0 deletions
diff --git a/nuttx/examples/wlan/wlan_main.c b/nuttx/examples/wlan/wlan_main.c new file mode 100755 index 000000000..fa13d76d9 --- /dev/null +++ b/nuttx/examples/wlan/wlan_main.c @@ -0,0 +1,240 @@ +/**************************************************************************** + * examples/wlan/wlan_main.c + * + * Copyright (C) 2011 Gregory Nutt. All rights reserved. + * Authors: Gregory Nutt <spudmonkey@racsa.co.cr> + * 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 <stdio.h> +#include <unistd.h> +#include <fcntl.h> +#include <sched.h> +#include <errno.h> + +#include <nuttx/usb/usbhost.h> + +/**************************************************************************** + * 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 "/dev/wlana" +#endif + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +static struct usbhost_driver_s *g_drvr; + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * 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 */ + + (void)DRVR_ENUMERATE(g_drvr); + } + } + + /* Keep the compiler from complaining */ + + return 0; +} + +/**************************************************************************** + * Name: user_initialize + ****************************************************************************/ + +void user_initialize(void) +{ +} + +/**************************************************************************** + * Name: user_start + ****************************************************************************/ + +int user_start(int argc, char *argv[]) +{ + char buffer[256]; + pid_t pid; + ssize_t nbytes; + int fd; + int ret; + + /* First, register all of the USB host Wireless LAN drivers */ + + printf("user_start: Register drivers\n"); + ret = usbhost_wlaninit(); + if (ret != OK) + { + printf("user_start: Failed to register the WLAN driver\n"); + } + + /* Then get an instance of the USB host interface */ + + printf("user_start: Initialize USB host WLAN driver\n"); + g_drvr = usbhost_initialize(0); + if (g_drvr) + { + /* Start a thread to handle device connection. */ + + printf("user_start: Start hidkbd_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 open the WLAN device and + * perform the device test. + */ + + for (;;) + { + /* Open the WLAN device. Loop until the device is successfully + * opened. + */ + + do + { + printf("Opening device %s\n", CONFIG_EXAMPLES_WLAN_DEVNAME); + fd = open(CONFIG_EXAMPLES_WLAN_DEVNAME, O_RDONLY); + if (fd < 0) + { + printf("Failed: %d\n", errno); + fflush(stdout); + sleep(3); + } + } + while (fd < 0); + + printf("Device %s opened\n", CONFIG_EXAMPLES_WLAN_DEVNAME); + fflush(stdout); + + /* Loop until there is a read failure */ + + do + { + /* Read a buffer of data */ + + nbytes = read(fd, buffer, 256); + if (nbytes > 0) + { + /* On success, echo the buffer to stdout */ + + (void)write(1, buffer, nbytes); + } + } + while (nbytes >= 0); + + printf("Closing device %s: %d\n", CONFIG_EXAMPLES_WLAN_DEVNAME, (int)nbytes); + fflush(stdout); + close(fd); + } + } + return 0; +} |