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[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Demo/] [lwIP_MCF5235_GCC/] [web.c] - Rev 834
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/* FreeRTOS V4.6.1 - copyright (C) 2003-2006 Richard Barry. This file is part of the FreeRTOS distribution. FreeRTOS is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License** as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with FreeRTOS; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA A special exception to the GPL can be applied should you wish to distribute a combined work that includes FreeRTOS, without being obliged to provide the source code for any proprietary components. See the licensing section of http://www.FreeRTOS.org for full details of how and when the exception can be applied. *************************************************************************** *************************************************************************** * * * Get the FreeRTOS eBook! See http://www.FreeRTOS.org/Documentation * * * * This is a concise, step by step, 'hands on' guide that describes both * * general multitasking concepts and FreeRTOS specifics. It presents and * * explains numerous examples that are written using the FreeRTOS API. * * Full source code for all the examples is provided in an accompanying * * .zip file. * * * *************************************************************************** *************************************************************************** Please ensure to read the configuration and relevant port sections of the online documentation. http://www.FreeRTOS.org - Documentation, latest information, license and contact details. http://www.SafeRTOS.com - A version that is certified for use in safety critical systems. http://www.OpenRTOS.com - Commercial support, development, porting, licensing and training services. */ /* Implements a simplistic WEB server. Every time a connection is made and data is received a dynamic page that shows the current TCP/IP statistics is generated and returned. The connection is then closed. This file was adapted from a FreeRTOS lwIP slip demo supplied by a third party. */ /* ------------------------ System includes ------------------------------- */ #include <stdio.h> #include <string.h> /* ------------------------ FreeRTOS includes ----------------------------- */ #include "FreeRTOS.h" #include "task.h" #include "semphr.h" /* ------------------------ lwIP includes --------------------------------- */ #include "lwip/api.h" #include "lwip/tcpip.h" #include "lwip/memp.h" #include "lwip/stats.h" #include "netif/loopif.h" /* ------------------------ Project includes ------------------------------ */ #include "mcf5xxx.h" #include "mcf523x.h" #include "netif/fec.h" #include "web.h" /* ------------------------ Defines --------------------------------------- */ /* The size of the buffer in which the dynamic WEB page is created. */ #define webMAX_PAGE_SIZE ( 2048 ) /* Standard GET response. */ #define webHTTP_OK "HTTP/1.0 200 OK\r\nContent-type: text/html\r\n\r\n" /* The port on which we listen. */ #define webHTTP_PORT ( 80 ) /* Delay on close error. */ #define webSHORT_DELAY ( 10 ) /* Format of the dynamic page that is returned on each connection. */ #define webHTML_START \ "<html>\ <head>\ </head>\ <BODY onLoad=\"window.setTimeout("location.href='index.html'",1000)\"bgcolor=\"#CCCCff\">\ \r\nPage Hits = " #define webHTML_END \ "\r\n" \ "FreeRTOS MCF5235 port (c) 2006 by Christian Walter <wolti@sil.at>\r\n" \ "</pre>\r\n" \ "</BODY>\r\n" \ "</html>" /* ------------------------ Prototypes ------------------------------------ */ static void vProcessConnection( struct netconn *pxNetCon ); /*------------------------------------------------------------*/ /* * Process an incoming connection on port 80. * * This simply checks to see if the incoming data contains a GET request, and * if so sends back a single dynamically created page. The connection is then * closed. A more complete implementation could create a task for each * connection. */ static void vProcessConnection( struct netconn *pxNetCon ) { static char cDynamicPage[webMAX_PAGE_SIZE], cPageHits[11]; struct netbuf *pxRxBuffer; char *pcRxString; unsigned short usLength; static unsigned long ulPageHits = 0; /* We expect to immediately get data. */ pxRxBuffer = netconn_recv( pxNetCon ); if( pxRxBuffer != NULL ) { /* Where is the data? */ netbuf_data( pxRxBuffer, ( void * )&pcRxString, &usLength ); /* Is this a GET? We don't handle anything else. */ if( !strncmp( pcRxString, "GET", 3 ) ) { pcRxString = cDynamicPage; /* Update the hit count. */ ulPageHits++; sprintf( cPageHits, "%lu", ulPageHits ); /* Write out the HTTP OK header. */ netconn_write( pxNetCon, webHTTP_OK, ( u16_t ) strlen( webHTTP_OK ), NETCONN_COPY ); /* Generate the dynamic page... ... First the page header. */ strcpy( cDynamicPage, webHTML_START ); /* ... Then the hit count... */ strcat( cDynamicPage, cPageHits ); strcat( cDynamicPage, "<p><pre>Task State Priority Stack #<br>************************************************<br>" ); /* ... Then the list of tasks and their status... */ vTaskList( ( signed char * )cDynamicPage + strlen( cDynamicPage ) ); /* ... Finally the page footer. */ strcat( cDynamicPage, webHTML_END ); /* Write out the dynamically generated page. */ netconn_write( pxNetCon, cDynamicPage, ( u16_t ) strlen( cDynamicPage ), NETCONN_COPY ); } netbuf_delete( pxRxBuffer ); } netconn_close( pxNetCon ); } /*------------------------------------------------------------*/ void vlwIPInit( void ) { /* Initialize lwIP and its interface layer. */ sys_init( ); mem_init( ); memp_init( ); pbuf_init( ); netif_init( ); ip_init( ); tcpip_init( NULL, NULL ); } /*------------------------------------------------------------*/ void vBasicWEBServer( void *pvParameters ) { struct netconn *pxHTTPListener, *pxNewConnection; struct ip_addr xIpAddr, xNetMast, xGateway; static struct netif fec523x_if; /* Parameters are not used - suppress compiler error. */ ( void )pvParameters; /* Create and configure the EMAC interface. */ IP4_ADDR( &xIpAddr, 10, 0, 10, 2 ); IP4_ADDR( &xNetMast, 255, 255, 255, 0 ); IP4_ADDR( &xGateway, 10, 0, 10, 1 ); netif_add( &fec523x_if, &xIpAddr, &xNetMast, &xGateway, NULL, mcf523xfec_init, tcpip_input ); /* make it the default interface */ netif_set_default( &fec523x_if ); /* bring it up */ netif_set_up( &fec523x_if ); /* Create a new tcp connection handle */ pxHTTPListener = netconn_new( NETCONN_TCP ); netconn_bind( pxHTTPListener, NULL, webHTTP_PORT ); netconn_listen( pxHTTPListener ); /* Loop forever */ for( ;; ) { /* Wait for connection. */ pxNewConnection = netconn_accept( pxHTTPListener ); if( pxNewConnection != NULL ) { /* Service connection. */ vProcessConnection( pxNewConnection ); while( netconn_delete( pxNewConnection ) != ERR_OK ) { vTaskDelay( webSHORT_DELAY ); } } } }
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