Add examples/wlan

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3283 42af7a65-404d-4744-a932-0658087f49c3

examples/wlan/Makefile

+############################################################################
+# examples/wlan/Makefile
+#
+#   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 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.
+#
+############################################################################
+
+-include $(TOPDIR)/.config
+-include $(TOPDIR)/Make.defs
+
+ASRCS	= 
+AOBJS	= $(ASRCS:.S=$(OBJEXT))
+CSRCS	= wlan_main.c
+COBJS	= $(CSRCS:.c=$(OBJEXT))
+
+SRCS	= $(ASRCS) $(CSRCS)
+OBJS	= $(AOBJS) $(COBJS)
+
+BIN	= libapp$(LIBEXT)
+
+all:	$(BIN)
+
+$(AOBJS): %$(OBJEXT): %.S
+	$(call ASSEMBLE, $<, $@)
+
+$(COBJS): %$(OBJEXT): %.c
+	$(call COMPILE, $<, $@)
+
+$(BIN):	$(OBJS)
+	@( for obj in $(OBJS) ; do \
+		$(call ARCHIVE, $@, $${obj}); \
+	done ; )
+
+.depend: Makefile $(SRCS)
+	@$(MKDEP) $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
+	@touch $@
+
+depend: .depend
+
+clean:
+	@rm -f $(BIN) *~ .*.swp
+	$(call CLEAN)
+
+distclean: clean
+	@rm -f Make.dep .depend
+
+-include Make.dep

examples/wlan/wlan_main.c

+/****************************************************************************
+ * 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;
+}