2 FreeRTOS V7.0.1 - Copyright (C) 2011 Real Time Engineers Ltd.
\r
5 ***************************************************************************
\r
7 * FreeRTOS tutorial books are available in pdf and paperback. *
\r
8 * Complete, revised, and edited pdf reference manuals are also *
\r
11 * Purchasing FreeRTOS documentation will not only help you, by *
\r
12 * ensuring you get running as quickly as possible and with an *
\r
13 * in-depth knowledge of how to use FreeRTOS, it will also help *
\r
14 * the FreeRTOS project to continue with its mission of providing *
\r
15 * professional grade, cross platform, de facto standard solutions *
\r
16 * for microcontrollers - completely free of charge! *
\r
18 * >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
\r
20 * Thank you for using FreeRTOS, and thank you for your support! *
\r
22 ***************************************************************************
\r
25 This file is part of the FreeRTOS distribution.
\r
27 FreeRTOS is free software; you can redistribute it and/or modify it under
\r
28 the terms of the GNU General Public License (version 2) as published by the
\r
29 Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
\r
30 >>>NOTE<<< The modification to the GPL is included to allow you to
\r
31 distribute a combined work that includes FreeRTOS without being obliged to
\r
32 provide the source code for proprietary components outside of the FreeRTOS
\r
33 kernel. FreeRTOS is distributed in the hope that it will be useful, but
\r
34 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
\r
35 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
\r
36 more details. You should have received a copy of the GNU General Public
\r
37 License and the FreeRTOS license exception along with FreeRTOS; if not it
\r
38 can be viewed here: http://www.freertos.org/a00114.html and also obtained
\r
39 by writing to Richard Barry, contact details for whom are available on the
\r
44 http://www.FreeRTOS.org - Documentation, latest information, license and
\r
47 http://www.SafeRTOS.com - A version that is certified for use in safety
\r
50 http://www.OpenRTOS.com - Commercial support, development, porting,
\r
51 licensing and training services.
\r
55 Implements a simplistic WEB server. Every time a connection is made and
\r
56 data is received a dynamic page that shows the current TCP/IP statistics
\r
57 is generated and returned. The connection is then closed.
\r
59 This file was adapted from a FreeRTOS lwIP slip demo supplied by a third
\r
66 + Changed the page returned by the lwIP WEB server demo to display the
\r
67 task status table rather than the TCP/IP statistics.
\r
71 /* Standard includes. */
\r
75 /* Scheduler includes. */
\r
76 #include "FreeRTOS.h"
\r
80 /* Demo includes. */
\r
81 #include "BasicWEB.h"
\r
82 #include "SAM7_EMAC.h"
\r
84 /* lwIP includes. */
\r
85 #include "lwip/api.h"
\r
86 #include "lwip/tcpip.h"
\r
87 #include "lwip/memp.h"
\r
88 #include "lwip/stats.h"
\r
89 #include "netif/loopif.h"
\r
91 /* The size of the buffer in which the dynamic WEB page is created. */
\r
92 #define webMAX_PAGE_SIZE 2048
\r
94 /* Standard GET response. */
\r
95 #define webHTTP_OK "HTTP/1.0 200 OK\r\nContent-type: text/html\r\n\r\n"
\r
97 /* The port on which we listen. */
\r
98 #define webHTTP_PORT ( 80 )
\r
100 /* Delay on close error. */
\r
101 #define webSHORT_DELAY ( 10 )
\r
103 /* Format of the dynamic page that is returned on each connection. */
\r
104 #define webHTML_START \
\r
108 <BODY onLoad=\"window.setTimeout("location.href='index.html'",1000)\"bgcolor=\"#CCCCff\">\
\r
111 #define webHTML_END \
\r
116 /*------------------------------------------------------------*/
\r
119 * Process an incoming connection on port 80.
\r
121 * This simply checks to see if the incoming data contains a GET request, and
\r
122 * if so sends back a single dynamically created page. The connection is then
\r
123 * closed. A more complete implementation could create a task for each
\r
126 static void vProcessConnection( struct netconn *pxNetCon );
\r
128 /*------------------------------------------------------------*/
\r
130 static void vProcessConnection( struct netconn *pxNetCon )
\r
132 static char cDynamicPage[ webMAX_PAGE_SIZE ], cPageHits[ 11 ];
\r
133 struct netbuf *pxRxBuffer;
\r
135 unsigned short usLength;
\r
136 static unsigned long ulPageHits = 0;
\r
138 /* We expect to immediately get data. */
\r
139 pxRxBuffer = netconn_recv( pxNetCon );
\r
141 if( pxRxBuffer != NULL )
\r
143 /* Where is the data? */
\r
144 netbuf_data( pxRxBuffer, ( void * ) &pcRxString, &usLength );
\r
146 /* Is this a GET? We don't handle anything else. */
\r
147 if( !strncmp( pcRxString, "GET", 3 ) )
\r
149 pcRxString = cDynamicPage;
\r
151 /* Update the hit count. */
\r
153 sprintf( cPageHits, "%lu", ulPageHits );
\r
155 /* Write out the HTTP OK header. */
\r
156 netconn_write(pxNetCon, webHTTP_OK, (u16_t)strlen( webHTTP_OK ), NETCONN_COPY );
\r
158 /* Generate the dynamic page...
\r
160 ... First the page header. */
\r
161 strcpy( cDynamicPage, webHTML_START );
\r
162 /* ... Then the hit count... */
\r
163 strcat( cDynamicPage, cPageHits );
\r
164 strcat( cDynamicPage, "<p><pre>Task State Priority Stack #<br>************************************************<br>" );
\r
165 /* ... Then the list of tasks and their status... */
\r
166 vTaskList( ( signed char * ) cDynamicPage + strlen( cDynamicPage ) );
\r
167 /* ... Finally the page footer. */
\r
168 strcat( cDynamicPage, webHTML_END );
\r
170 /* Write out the dynamically generated page. */
\r
171 netconn_write(pxNetCon, cDynamicPage, (u16_t)strlen( cDynamicPage ), NETCONN_COPY );
\r
174 netbuf_delete( pxRxBuffer );
\r
177 netconn_close( pxNetCon );
\r
179 /*------------------------------------------------------------*/
\r
181 void vlwIPInit( void )
\r
183 /* Initialize lwIP and its interface layer. */
\r
190 tcpip_init( NULL, NULL );
\r
192 /*------------------------------------------------------------*/
\r
194 void vBasicWEBServer( void *pvParameters )
\r
196 struct netconn *pxHTTPListener, *pxNewConnection;
\r
197 struct ip_addr xIpAddr, xNetMast, xGateway;
\r
198 extern err_t ethernetif_init( struct netif *netif );
\r
199 static struct netif EMAC_if;
\r
201 /* Parameters are not used - suppress compiler error. */
\r
202 ( void ) pvParameters;
\r
205 /* Create and configure the EMAC interface. */
\r
206 IP4_ADDR(&xIpAddr,emacIPADDR0,emacIPADDR1,emacIPADDR2,emacIPADDR3);
\r
207 IP4_ADDR(&xNetMast,emacNET_MASK0,emacNET_MASK1,emacNET_MASK2,emacNET_MASK3);
\r
208 IP4_ADDR(&xGateway,emacGATEWAY_ADDR0,emacGATEWAY_ADDR1,emacGATEWAY_ADDR2,emacGATEWAY_ADDR3);
\r
209 netif_add(&EMAC_if, &xIpAddr, &xNetMast, &xGateway, NULL, ethernetif_init, tcpip_input);
\r
211 /* make it the default interface */
\r
212 netif_set_default(&EMAC_if);
\r
215 netif_set_up(&EMAC_if);
\r
217 /* Create a new tcp connection handle */
\r
219 pxHTTPListener = netconn_new( NETCONN_TCP );
\r
220 netconn_bind(pxHTTPListener, NULL, webHTTP_PORT );
\r
221 netconn_listen( pxHTTPListener );
\r
226 /* Wait for connection. */
\r
227 pxNewConnection = netconn_accept(pxHTTPListener);
\r
229 if(pxNewConnection != NULL)
\r
231 /* Service connection. */
\r
232 vProcessConnection( pxNewConnection );
\r
233 while( netconn_delete( pxNewConnection ) != ERR_OK )
\r
235 vTaskDelay( webSHORT_DELAY );
\r