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[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Demo/] [ColdFire_MCF52259_CodeWarrior/] [HTTPDemo.c] - Blame information for rev 595

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1 578 jeremybenn
/*
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    FreeRTOS V6.1.1 - Copyright (C) 2011 Real Time Engineers Ltd.
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    ***************************************************************************
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    *                                                                         *
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    * If you are:                                                             *
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    *                                                                         *
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    *    + New to FreeRTOS,                                                   *
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    *    + Wanting to learn FreeRTOS or multitasking in general quickly       *
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    *    + Looking for basic training,                                        *
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    *    + Wanting to improve your FreeRTOS skills and productivity           *
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    *                                                                         *
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    * then take a look at the FreeRTOS books - available as PDF or paperback  *
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    *                                                                         *
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    *        "Using the FreeRTOS Real Time Kernel - a Practical Guide"        *
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    *                  http://www.FreeRTOS.org/Documentation                  *
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    *                                                                         *
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    * A pdf reference manual is also available.  Both are usually delivered   *
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    * to your inbox within 20 minutes to two hours when purchased between 8am *
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    * and 8pm GMT (although please allow up to 24 hours in case of            *
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    * exceptional circumstances).  Thank you for your support!                *
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    *                                                                         *
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    ***************************************************************************
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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 it under
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    the terms of the GNU General Public License (version 2) as published by the
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    Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
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    ***NOTE*** The exception to the GPL is included to allow you to distribute
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    a combined work that includes FreeRTOS without being obliged to provide the
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    source code for proprietary components outside of the FreeRTOS kernel.
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    FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
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    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
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    more details. You should have received a copy of the GNU General Public
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    License and the FreeRTOS license exception along with FreeRTOS; if not it
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    can be viewed here: http://www.freertos.org/a00114.html and also obtained
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    by writing to Richard Barry, contact details for whom are available on the
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    FreeRTOS WEB site.
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    1 tab == 4 spaces!
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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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/* ------------------------ 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/ip.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 "common.h"
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#include "HTTPDemo.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        ( 1024 ) /*FSL: buffer containing array*/
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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\n\r\nPage Hits = "
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#define webHTML_END \
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"\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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#if INCLUDE_uxTaskGetStackHighWaterMark
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        static volatile unsigned portBASE_TYPE uxHighWaterMark_web = 0;
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#endif
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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 vProcessConnection( struct netconn *pxNetCon )
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{
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    static portCHAR cDynamicPage[webMAX_PAGE_SIZE], cPageHits[11];
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    struct netbuf  *pxRxBuffer;
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    portCHAR       *pcRxString;
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    unsigned portSHORT usLength;
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    static unsigned portLONG 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, "%d", (int)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 portCHAR * )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 vlwIPInit( void )
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{
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    /* Initialize lwIP and its interface layer. */
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    tcpip_init( NULL, NULL );
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}
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/*------------------------------------------------------------*/
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void 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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        extern err_t ethernetif_init(struct netif *netif);
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    /* Parameters are not used - suppress compiler error. */
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    ( void )pvParameters;
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        vlwIPInit();
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    /* Create and configure the FEC interface. */
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    IP4_ADDR( &xIpAddr, configIP_ADDR0, configIP_ADDR1, configIP_ADDR2, configIP_ADDR3 );
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    IP4_ADDR( &xNetMast, configNET_MASK0, configNET_MASK1, configNET_MASK2, configNET_MASK3 );
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    IP4_ADDR( &xGateway, configGW_ADDR0, configGW_ADDR1, configGW_ADDR2, configGW_ADDR3 );
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    netif_add( &fec523x_if, &xIpAddr, &xNetMast, &xGateway, NULL, ethernetif_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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