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Completes coding of the PWM module
git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4200 7fd9a85b-ad96-42d3-883c-3090e2eb8679
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patacongo
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/****************************************************************************
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* examples/thttpd/main.c
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*
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* Copyright (C) 2009-2011 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name Gregory Nutt nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/ioctl.h>
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#include <sys/mount.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <errno.h>
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#include <debug.h>
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#include <net/if.h>
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#include <netinet/ether.h>
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#include <net/uip/uip-arp.h>
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#include <apps/netutils/uiplib.h>
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#include <apps/netutils/thttpd.h>
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#include <nuttx/ramdisk.h>
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#include <nuttx/binfmt.h>
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#include <nuttx/nxflat.h>
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#ifdef CONFIG_NET_SLIP
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# include <nuttx/net.h>
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#endif
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#include "content/romfs.h"
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#include "content/symtab.h"
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/****************************************************************************
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* Definitions
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****************************************************************************/
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/* Check configuration. This is not all of the configuration settings that
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* are required -- only the more obvious.
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*/
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#if CONFIG_NFILE_DESCRIPTORS < 1
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# error "You must provide file descriptors via CONFIG_NFILE_DESCRIPTORS in your configuration file"
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#endif
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#ifndef CONFIG_NXFLAT
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# error "You must select CONFIG_NXFLAT in your configuration file"
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#endif
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#ifndef CONFIG_FS_ROMFS
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# error "You must select CONFIG_FS_ROMFS in your configuration file"
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#endif
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#ifdef CONFIG_DISABLE_MOUNTPOINT
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# error "You must not disable mountpoints via CONFIG_DISABLE_MOUNTPOINT in your configuration file"
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#endif
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#ifdef CONFIG_BINFMT_DISABLE
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# error "You must not disable loadable modules via CONFIG_BINFMT_DISABLE in your configuration file"
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#endif
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/* SLIP-specific configuration */
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#ifdef CONFIG_NET_SLIP
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/* No MAC address operations */
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# undef CONFIG_EXAMPLE_THTTPD_NOMAC
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/* TTY device to use */
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# ifndef CONFIG_NET_SLIPTTY
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# define CONFIG_NET_SLIPTTY "/dev/ttyS1"
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# endif
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# define SLIP_DEVNO 0
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# define NET_DEVNAME "sl0"
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#else
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/* Otherwise, use the standard ethernet device name */
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# define NET_DEVNAME "eth0"
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#endif
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/* Describe the ROMFS file system */
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#define SECTORSIZE 512
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#define NSECTORS(b) (((b)+SECTORSIZE-1)/SECTORSIZE)
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#define ROMFSDEV "/dev/ram0"
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#define MOUNTPT CONFIG_THTTPD_PATH
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#ifdef CONFIG_CPP_HAVE_VARARGS
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# ifdef CONFIG_DEBUG
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# define message(...) lib_lowprintf(__VA_ARGS__)
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# define msgflush()
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# else
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# define message(...) printf(__VA_ARGS__)
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# define msgflush() fflush(stdout)
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# endif
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#else
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# ifdef CONFIG_DEBUG
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# define message lib_lowprintf
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# define msgflush()
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# else
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# define message printf
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# define msgflush() fflush(stdout)
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# endif
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#endif
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/* These values must be provided by the user before the THTTPD task daemon
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* is started:
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*
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* g_thttpdsymtab: A symbol table describing all of the symbols exported
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* from the base system. These symbols are used to bind address references
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* in CGI programs to NuttX.
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* g_nsymbols: The number of symbols in g_thttpdsymtab[].
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*/
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FAR const struct symtab_s *g_thttpdsymtab;
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int g_thttpdnsymbols;
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* user_start
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****************************************************************************/
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int user_start(int argc, char *argv[])
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{
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struct in_addr addr;
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#ifdef CONFIG_EXAMPLE_THTTPD_NOMAC
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uint8_t mac[IFHWADDRLEN];
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#endif
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char *thttpd_argv = "thttpd";
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int ret;
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/* Configure SLIP */
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#ifdef CONFIG_NET_SLIP
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ret = slip_initialize(SLIP_DEVNO, CONFIG_NET_SLIPTTY);
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if (ret < 0)
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{
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message("ERROR: SLIP initialization failed: %d\n", ret);
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exit(1);
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}
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#endif
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/* Many embedded network interfaces must have a software assigned MAC */
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#ifdef CONFIG_EXAMPLE_THTTPD_NOMAC
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message("Assigning MAC\n");
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mac[0] = 0x00;
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mac[1] = 0xe0;
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mac[2] = 0xb0;
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mac[3] = 0x0b;
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mac[4] = 0xba;
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mac[5] = 0xbe;
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uip_setmacaddr(NET_DEVNAME, mac);
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#endif
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/* Set up our host address */
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message("Setup network addresses\n");
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addr.s_addr = HTONL(CONFIG_THTTPD_IPADDR);
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uip_sethostaddr(NET_DEVNAME, &addr);
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/* Set up the default router address */
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addr.s_addr = HTONL(CONFIG_EXAMPLE_THTTPD_DRIPADDR);
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uip_setdraddr(NET_DEVNAME, &addr);
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/* Setup the subnet mask */
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addr.s_addr = HTONL(CONFIG_EXAMPLE_THTTPD_NETMASK);
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uip_setnetmask(NET_DEVNAME, &addr);
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/* Initialize the NXFLAT binary loader */
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message("Initializing the NXFLAT binary loader\n");
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ret = nxflat_initialize();
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if (ret < 0)
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{
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message("ERROR: Initialization of the NXFLAT loader failed: %d\n", ret);
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exit(2);
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}
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/* Create a ROM disk for the ROMFS filesystem */
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message("Registering romdisk\n");
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ret = romdisk_register(0, (uint8_t*)romfs_img, NSECTORS(romfs_img_len), SECTORSIZE);
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if (ret < 0)
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{
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message("ERROR: romdisk_register failed: %d\n", ret);
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nxflat_uninitialize();
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exit(1);
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}
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/* Mount the file system */
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message("Mounting ROMFS filesystem at target=%s with source=%s\n",
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MOUNTPT, ROMFSDEV);
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ret = mount(ROMFSDEV, MOUNTPT, "romfs", MS_RDONLY, NULL);
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if (ret < 0)
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{
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message("ERROR: mount(%s,%s,romfs) failed: %s\n",
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ROMFSDEV, MOUNTPT, errno);
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nxflat_uninitialize();
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}
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/* Start THTTPD. At present, symbol table info is passed via global variables */
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g_thttpdsymtab = exports;
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g_thttpdnsymbols = NEXPORTS;
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message("Starting THTTPD\n");
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msgflush();
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thttpd_main(1, &thttpd_argv);
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message("THTTPD terminated\n");
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msgflush();
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return 0;
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}
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