| /* | |
| FreeRTOS V5.4.2 - Copyright (C) 2009 Real Time Engineers Ltd. | |
| 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 (version 2) as published by the | |
| Free Software Foundation and modified by the FreeRTOS exception. | |
| **NOTE** The exception to the GPL is included to allow you to distribute a | |
| combined work that includes FreeRTOS without being obliged to provide the | |
| source code for proprietary components outside of the FreeRTOS kernel. | |
| Alternative commercial license and support terms are also available upon | |
| request. See the licensing section of http://www.FreeRTOS.org for full | |
| license details. | |
| 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. | |
| *************************************************************************** | |
| * * | |
| * Looking for a quick start? Then check out the FreeRTOS eBook! * | |
| * See http://www.FreeRTOS.org/Documentation for details * | |
| * * | |
| *************************************************************************** | |
| 1 tab == 4 spaces! | |
| 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. | |
| */ | |
| /* | |
| Changes from V3.2.2 | |
| + Changed the page returned by the lwIP WEB server demo to display the | |
| task status table rather than the TCP/IP statistics. | |
| */ | |
| /* Standard includes. */ | |
| #include <stdio.h> | |
| #include <string.h> | |
| /* Scheduler includes. */ | |
| #include "FreeRTOS.h" | |
| #include "task.h" | |
| #include "semphr.h" | |
| /* Demo includes. */ | |
| #include "BasicWEB.h" | |
| #include "SAM7_EMAC.h" | |
| /* lwIP includes. */ | |
| #include "lwip/api.h" | |
| #include "lwip/tcpip.h" | |
| #include "lwip/memp.h" | |
| #include "lwip/stats.h" | |
| #include "netif/loopif.h" | |
| /* 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</pre>\ | |
| \r\n</BODY>\ | |
| </html>" | |
| /*------------------------------------------------------------*/ | |
| /* | |
| * 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 void vProcessConnection( struct netconn *pxNetCon ) | |
| { | |
| static portCHAR cDynamicPage[ webMAX_PAGE_SIZE ], cPageHits[ 11 ]; | |
| 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( !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 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 ); | |
| } | |
| /*------------------------------------------------------------*/ | |
| 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; | |
| extern err_t ethernetif_init( struct netif *netif ); | |
| static struct netif EMAC_if; | |
| /* Parameters are not used - suppress compiler error. */ | |
| ( void ) pvParameters; | |
| /* Create and configure the EMAC interface. */ | |
| IP4_ADDR(&xIpAddr,emacIPADDR0,emacIPADDR1,emacIPADDR2,emacIPADDR3); | |
| IP4_ADDR(&xNetMast,emacNET_MASK0,emacNET_MASK1,emacNET_MASK2,emacNET_MASK3); | |
| IP4_ADDR(&xGateway,emacGATEWAY_ADDR0,emacGATEWAY_ADDR1,emacGATEWAY_ADDR2,emacGATEWAY_ADDR3); | |
| netif_add(&EMAC_if, &xIpAddr, &xNetMast, &xGateway, NULL, ethernetif_init, tcpip_input); | |
| /* make it the default interface */ | |
| netif_set_default(&EMAC_if); | |
| /* bring it up */ | |
| netif_set_up(&EMAC_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 ); | |
| } | |
| } | |
| } | |
| } | |