2 FreeRTOS V6.1.0 - Copyright (C) 2010 Real Time Engineers Ltd.
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4 ***************************************************************************
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8 * + New to FreeRTOS, *
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9 * + Wanting to learn FreeRTOS or multitasking in general quickly *
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10 * + Looking for basic training, *
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11 * + Wanting to improve your FreeRTOS skills and productivity *
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13 * then take a look at the FreeRTOS books - available as PDF or paperback *
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15 * "Using the FreeRTOS Real Time Kernel - a Practical Guide" *
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16 * http://www.FreeRTOS.org/Documentation *
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18 * A pdf reference manual is also available. Both are usually delivered *
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19 * to your inbox within 20 minutes to two hours when purchased between 8am *
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20 * and 8pm GMT (although please allow up to 24 hours in case of *
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21 * exceptional circumstances). Thank you for your support! *
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23 ***************************************************************************
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25 This file is part of the FreeRTOS distribution.
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27 FreeRTOS is free software; you can redistribute it and/or modify it under
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28 the terms of the GNU General Public License (version 2) as published by the
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29 Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
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30 ***NOTE*** The exception to the GPL is included to allow you to distribute
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31 a combined work that includes FreeRTOS without being obliged to provide the
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32 source code for proprietary components outside of the FreeRTOS kernel.
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33 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
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34 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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35 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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36 more details. You should have received a copy of the GNU General Public
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37 License and the FreeRTOS license exception along with FreeRTOS; if not it
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38 can be viewed here: http://www.freertos.org/a00114.html and also obtained
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39 by writing to Richard Barry, contact details for whom are available on the
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44 http://www.FreeRTOS.org - Documentation, latest information, license and
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47 http://www.SafeRTOS.com - A version that is certified for use in safety
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50 http://www.OpenRTOS.com - Commercial support, development, porting,
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51 licensing and training services.
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55 Implements a simplistic WEB server. Every time a connection is made and
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56 data is received a dynamic page that shows the current TCP/IP statistics
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57 is generated and returned. The connection is then closed.
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59 This file was adapted from a FreeRTOS lwIP slip demo supplied by a third
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66 + Changed the page returned by the lwIP WEB server demo to display the
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67 task status table rather than the TCP/IP statistics.
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71 /* Standard includes. */
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75 /* Scheduler includes. */
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76 #include "FreeRTOS.h"
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80 /* Demo includes. */
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81 #include "BasicWEB.h"
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82 #include "SAM7_EMAC.h"
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84 /* lwIP includes. */
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85 #include "lwip/api.h"
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86 #include "lwip/tcpip.h"
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87 #include "lwip/memp.h"
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88 #include "lwip/stats.h"
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89 #include "netif/loopif.h"
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91 /* The size of the buffer in which the dynamic WEB page is created. */
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92 #define webMAX_PAGE_SIZE 2048
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94 /* Standard GET response. */
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95 #define webHTTP_OK "HTTP/1.0 200 OK\r\nContent-type: text/html\r\n\r\n"
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97 /* The port on which we listen. */
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98 #define webHTTP_PORT ( 80 )
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100 /* Delay on close error. */
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101 #define webSHORT_DELAY ( 10 )
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103 /* Format of the dynamic page that is returned on each connection. */
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104 #define webHTML_START \
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108 <BODY onLoad=\"window.setTimeout("location.href='index.html'",1000)\"bgcolor=\"#CCCCff\">\
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111 #define webHTML_END \
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116 /*------------------------------------------------------------*/
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119 * Process an incoming connection on port 80.
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121 * This simply checks to see if the incoming data contains a GET request, and
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122 * if so sends back a single dynamically created page. The connection is then
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123 * closed. A more complete implementation could create a task for each
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126 static void vProcessConnection( struct netconn *pxNetCon );
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128 /*------------------------------------------------------------*/
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130 static void vProcessConnection( struct netconn *pxNetCon )
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132 static char cDynamicPage[ webMAX_PAGE_SIZE ], cPageHits[ 11 ];
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133 struct netbuf *pxRxBuffer;
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135 unsigned short usLength;
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136 static unsigned long ulPageHits = 0;
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138 /* We expect to immediately get data. */
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139 pxRxBuffer = netconn_recv( pxNetCon );
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141 if( pxRxBuffer != NULL )
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143 /* Where is the data? */
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144 netbuf_data( pxRxBuffer, ( void * ) &pcRxString, &usLength );
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146 /* Is this a GET? We don't handle anything else. */
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147 if( !strncmp( pcRxString, "GET", 3 ) )
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149 pcRxString = cDynamicPage;
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151 /* Update the hit count. */
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153 sprintf( cPageHits, "%lu", ulPageHits );
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155 /* Write out the HTTP OK header. */
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156 netconn_write(pxNetCon, webHTTP_OK, (u16_t)strlen( webHTTP_OK ), NETCONN_COPY );
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158 /* Generate the dynamic page...
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160 ... First the page header. */
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161 strcpy( cDynamicPage, webHTML_START );
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162 /* ... Then the hit count... */
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163 strcat( cDynamicPage, cPageHits );
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164 strcat( cDynamicPage, "<p><pre>Task State Priority Stack #<br>************************************************<br>" );
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165 /* ... Then the list of tasks and their status... */
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166 vTaskList( ( signed char * ) cDynamicPage + strlen( cDynamicPage ) );
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167 /* ... Finally the page footer. */
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168 strcat( cDynamicPage, webHTML_END );
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170 /* Write out the dynamically generated page. */
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171 netconn_write(pxNetCon, cDynamicPage, (u16_t)strlen( cDynamicPage ), NETCONN_COPY );
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174 netbuf_delete( pxRxBuffer );
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177 netconn_close( pxNetCon );
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179 /*------------------------------------------------------------*/
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181 void vlwIPInit( void )
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183 /* Initialize lwIP and its interface layer. */
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190 tcpip_init( NULL, NULL );
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192 /*------------------------------------------------------------*/
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194 void vBasicWEBServer( void *pvParameters )
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196 struct netconn *pxHTTPListener, *pxNewConnection;
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197 struct ip_addr xIpAddr, xNetMast, xGateway;
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198 extern err_t ethernetif_init( struct netif *netif );
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199 static struct netif EMAC_if;
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201 /* Parameters are not used - suppress compiler error. */
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202 ( void ) pvParameters;
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205 /* Create and configure the EMAC interface. */
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206 IP4_ADDR(&xIpAddr,emacIPADDR0,emacIPADDR1,emacIPADDR2,emacIPADDR3);
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207 IP4_ADDR(&xNetMast,emacNET_MASK0,emacNET_MASK1,emacNET_MASK2,emacNET_MASK3);
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208 IP4_ADDR(&xGateway,emacGATEWAY_ADDR0,emacGATEWAY_ADDR1,emacGATEWAY_ADDR2,emacGATEWAY_ADDR3);
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209 netif_add(&EMAC_if, &xIpAddr, &xNetMast, &xGateway, NULL, ethernetif_init, tcpip_input);
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211 /* make it the default interface */
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212 netif_set_default(&EMAC_if);
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215 netif_set_up(&EMAC_if);
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217 /* Create a new tcp connection handle */
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219 pxHTTPListener = netconn_new( NETCONN_TCP );
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220 netconn_bind(pxHTTPListener, NULL, webHTTP_PORT );
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221 netconn_listen( pxHTTPListener );
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226 /* Wait for connection. */
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227 pxNewConnection = netconn_accept(pxHTTPListener);
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229 if(pxNewConnection != NULL)
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231 /* Service connection. */
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232 vProcessConnection( pxNewConnection );
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233 while( netconn_delete( pxNewConnection ) != ERR_OK )
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235 vTaskDelay( webSHORT_DELAY );
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