/* This source file is part of the ATMEL AVR32-SoftwareFramework-AT32UC3A-1.4.0 Release */ /*This file has been prepared for Doxygen automatic documentation generation.*/ /*! \file ********************************************************************* * * \brief Basic WEB Server for AVR32 UC3. * * - Compiler: GNU GCC for AVR32 * - Supported devices: All AVR32 devices can be used. * - AppNote: * * \author Atmel Corporation: http://www.atmel.com \n * Support and FAQ: http://support.atmel.no/ * *****************************************************************************/ /* Copyright (C) 2006-2008, Atmel Corporation All rights reserved. * * 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. The name of ATMEL may not be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY ATMEL ``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 EXPRESSLY AND * SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL 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. */ /* Implements a simplistic WEB server. Every time a connection is made and data is received a dynamic page that shows the current FreeRTOS.org kernel 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. */ #if (HTTP_USED == 1) /* Standard includes. */ #include #include #include "conf_eth.h" /* Scheduler includes. */ #include "FreeRTOS.h" #include "task.h" #include "semphr.h" #include "partest.h" #include "serial.h" /* Demo includes. */ /* Demo app includes. */ #include "portmacro.h" /* lwIP includes. */ #include "lwip/api.h" #include "lwip/tcpip.h" #include "lwip/memp.h" #include "lwip/stats.h" #include "netif/loopif.h" /* ethernet includes */ #include "ethernet.h" /*! The size of the buffer in which the dynamic WEB page is created. */ #define webMAX_PAGE_SIZE 512 /*! 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 \ "\ \ \ \ \r\nPage Hits = " #define webHTML_END \ "\r\n\ \r\n\ " portCHAR cDynamicPage[ webMAX_PAGE_SIZE ]; portCHAR cPageHits[ 11 ]; /*! Function to process the current connection */ static void prvweb_ParseHTMLRequest( struct netconn *pxNetCon ); /*! \brief WEB server main task * check for incoming connection and process it * * \param pvParameters Input. Not Used. * */ portTASK_FUNCTION( vBasicWEBServer, pvParameters ) { struct netconn *pxHTTPListener, *pxNewConnection; /* 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 a first connection. */ pxNewConnection = netconn_accept(pxHTTPListener); vParTestSetLED(webCONN_LED, pdTRUE); if(pxNewConnection != NULL) { prvweb_ParseHTMLRequest(pxNewConnection); }/* end if new connection */ vParTestSetLED(webCONN_LED, pdFALSE); } /* end infinite loop */ } /*! \brief parse the incoming request * parse the HTML request and send file * * \param pxNetCon Input. The netconn to use to send and receive data. * */ static void prvweb_ParseHTMLRequest( struct netconn *pxNetCon ) { struct netbuf *pxRxBuffer; portCHAR *pcRxString; unsigned portSHORT usLength; static unsigned portLONG 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(( NULL != pcRxString ) && ( !strncmp( pcRxString, "GET", 3 ) )) { /* Update the hit count. */ ulPageHits++; sprintf( cPageHits, "%d", (int)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, "

Task          State  Priority  Stack	#
************************************************
" );

			/* ... Then the list of tasks and their status... */
			vTaskList( ( signed portCHAR * ) 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 );
	netconn_delete( pxNetCon );
}

#endif