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[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Demo/] [lwIP_MCF5235_GCC/] [web.c] - Blame information for rev 609

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1 583 jeremybenn
/*
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    FreeRTOS V4.6.1 - copyright (C) 2003-2006 Richard Barry.
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    This file is part of the FreeRTOS distribution.
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    FreeRTOS is free software; you can redistribute it and/or modify
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    it under the terms of the GNU General Public License** as published by
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    the Free Software Foundation; either version 2 of the License, or
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    (at your option) any later version.
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    FreeRTOS is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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    GNU General Public License for more details.
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    You should have received a copy of the GNU General Public License
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    along with FreeRTOS; if not, write to the Free Software
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    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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    A special exception to the GPL can be applied should you wish to distribute
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    a combined work that includes FreeRTOS, without being obliged to provide
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    the source code for any proprietary components.  See the licensing section
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    of http://www.FreeRTOS.org for full details of how and when the exception
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    can be applied.
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    ***************************************************************************
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    ***************************************************************************
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    *                                                                         *
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    * Get the FreeRTOS eBook!  See http://www.FreeRTOS.org/Documentation      *
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        *                                                                         *
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        * This is a concise, step by step, 'hands on' guide that describes both   *
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        * general multitasking concepts and FreeRTOS specifics. It presents and   *
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        * explains numerous examples that are written using the FreeRTOS API.     *
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        * Full source code for all the examples is provided in an accompanying    *
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        * .zip file.                                                              *
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    *                                                                         *
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    ***************************************************************************
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    ***************************************************************************
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        Please ensure to read the configuration and relevant port sections of the
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        online documentation.
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        http://www.FreeRTOS.org - Documentation, latest information, license and
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        contact details.
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        http://www.SafeRTOS.com - A version that is certified for use in safety
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        critical systems.
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        http://www.OpenRTOS.com - Commercial support, development, porting,
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        licensing and training services.
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*/
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/*
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    Implements a simplistic WEB server.  Every time a connection is made and
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    data is received a dynamic page that shows the current TCP/IP statistics
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    is generated and returned.  The connection is then closed.
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    This file was adapted from a FreeRTOS lwIP slip demo supplied by a third
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    party.
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*/
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/* ------------------------ System includes ------------------------------- */
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#include <stdio.h>
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#include <string.h>
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/* ------------------------ FreeRTOS includes ----------------------------- */
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#include "FreeRTOS.h"
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#include "task.h"
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#include "semphr.h"
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/* ------------------------ lwIP includes --------------------------------- */
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#include "lwip/api.h"
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#include "lwip/tcpip.h"
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#include "lwip/memp.h"
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#include "lwip/stats.h"
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#include "netif/loopif.h"
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/* ------------------------ Project includes ------------------------------ */
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#include "mcf5xxx.h"
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#include "mcf523x.h"
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#include "netif/fec.h"
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#include "web.h"
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/* ------------------------ Defines --------------------------------------- */
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/* The size of the buffer in which the dynamic WEB page is created. */
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#define webMAX_PAGE_SIZE        ( 2048 )
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/* Standard GET response. */
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#define webHTTP_OK  "HTTP/1.0 200 OK\r\nContent-type: text/html\r\n\r\n"
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/* The port on which we listen. */
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#define webHTTP_PORT            ( 80 )
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/* Delay on close error. */
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#define webSHORT_DELAY          ( 10 )
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/* Format of the dynamic page that is returned on each connection. */
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#define webHTML_START \
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"<html>\
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<head>\
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</head>\
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<BODY onLoad=\"window.setTimeout(&quot;location.href='index.html'&quot;,1000)\"bgcolor=\"#CCCCff\">\
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\r\nPage Hits = "
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#define webHTML_END \
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"\r\n" \
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"FreeRTOS MCF5235 port (c) 2006 by Christian Walter &lt;wolti@sil.at&gt;\r\n" \
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"</pre>\r\n" \
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"</BODY>\r\n" \
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"</html>"
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/* ------------------------ Prototypes ------------------------------------ */
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static void     vProcessConnection( struct netconn *pxNetCon );
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/*------------------------------------------------------------*/
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/*
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 * Process an incoming connection on port 80.
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 *
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 * This simply checks to see if the incoming data contains a GET request, and
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 * if so sends back a single dynamically created page.  The connection is then
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 * closed.  A more complete implementation could create a task for each
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 * connection.
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 */
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static void
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vProcessConnection( struct netconn *pxNetCon )
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{
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    static char cDynamicPage[webMAX_PAGE_SIZE], cPageHits[11];
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    struct netbuf  *pxRxBuffer;
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    char       *pcRxString;
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    unsigned short usLength;
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    static unsigned long ulPageHits = 0;
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    /* We expect to immediately get data. */
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    pxRxBuffer = netconn_recv( pxNetCon );
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    if( pxRxBuffer != NULL )
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    {
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        /* Where is the data? */
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        netbuf_data( pxRxBuffer, ( void * )&pcRxString, &usLength );
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        /* Is this a GET?  We don't handle anything else. */
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        if( !strncmp( pcRxString, "GET", 3 ) )
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        {
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            pcRxString = cDynamicPage;
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            /* Update the hit count. */
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            ulPageHits++;
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            sprintf( cPageHits, "%lu", ulPageHits );
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            /* Write out the HTTP OK header. */
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            netconn_write( pxNetCon, webHTTP_OK, ( u16_t ) strlen( webHTTP_OK ), NETCONN_COPY );
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            /* Generate the dynamic page...
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               ... First the page header. */
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            strcpy( cDynamicPage, webHTML_START );
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            /* ... Then the hit count... */
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            strcat( cDynamicPage, cPageHits );
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            strcat( cDynamicPage,
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                    "<p><pre>Task          State  Priority  Stack #<br>************************************************<br>" );
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            /* ... Then the list of tasks and their status... */
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            vTaskList( ( signed char * )cDynamicPage + strlen( cDynamicPage ) );
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            /* ... Finally the page footer. */
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            strcat( cDynamicPage, webHTML_END );
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            /* Write out the dynamically generated page. */
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            netconn_write( pxNetCon, cDynamicPage, ( u16_t ) strlen( cDynamicPage ), NETCONN_COPY );
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        }
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        netbuf_delete( pxRxBuffer );
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    }
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    netconn_close( pxNetCon );
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}
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/*------------------------------------------------------------*/
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void
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vlwIPInit( void )
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{
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    /* Initialize lwIP and its interface layer. */
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    sys_init(  );
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    mem_init(  );
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    memp_init(  );
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    pbuf_init(  );
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    netif_init(  );
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    ip_init(  );
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    tcpip_init( NULL, NULL );
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}
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/*------------------------------------------------------------*/
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void
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vBasicWEBServer( void *pvParameters )
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{
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    struct netconn *pxHTTPListener, *pxNewConnection;
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    struct ip_addr  xIpAddr, xNetMast, xGateway;
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    static struct netif fec523x_if;
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    /* Parameters are not used - suppress compiler error. */
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    ( void )pvParameters;
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    /* Create and configure the EMAC interface. */
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    IP4_ADDR( &xIpAddr, 10, 0, 10, 2 );
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    IP4_ADDR( &xNetMast, 255, 255, 255, 0 );
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    IP4_ADDR( &xGateway, 10, 0, 10, 1 );
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    netif_add( &fec523x_if, &xIpAddr, &xNetMast, &xGateway, NULL, mcf523xfec_init, tcpip_input );
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    /* make it the default interface */
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    netif_set_default( &fec523x_if );
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    /* bring it up */
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    netif_set_up( &fec523x_if );
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    /* Create a new tcp connection handle */
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    pxHTTPListener = netconn_new( NETCONN_TCP );
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    netconn_bind( pxHTTPListener, NULL, webHTTP_PORT );
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    netconn_listen( pxHTTPListener );
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    /* Loop forever */
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    for( ;; )
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    {
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        /* Wait for connection. */
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        pxNewConnection = netconn_accept( pxHTTPListener );
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        if( pxNewConnection != NULL )
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        {
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            /* Service connection. */
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            vProcessConnection( pxNewConnection );
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            while( netconn_delete( pxNewConnection ) != ERR_OK )
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            {
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                vTaskDelay( webSHORT_DELAY );
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            }
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        }
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    }
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}

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