2 FreeRTOS.org V4.4.0 - Copyright (C) 2003-2007 Richard Barry.
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4 This file is part of the FreeRTOS.org distribution.
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6 FreeRTOS.org is free software; you can redistribute it and/or modify
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7 it under the terms of the GNU General Public License as published by
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8 the Free Software Foundation; either version 2 of the License, or
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9 (at your option) any later version.
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11 FreeRTOS.org is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 GNU General Public License for more details.
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16 You should have received a copy of the GNU General Public License
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17 along with FreeRTOS.org; if not, write to the Free Software
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18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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20 A special exception to the GPL can be applied should you wish to distribute
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21 a combined work that includes FreeRTOS.org, without being obliged to provide
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22 the source code for any proprietary components. See the licensing section
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23 of http://www.FreeRTOS.org for full details of how and when the exception
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26 ***************************************************************************
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27 See http://www.FreeRTOS.org for documentation, latest information, license
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28 and contact details. Please ensure to read the configuration and relevant
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29 port sections of the online documentation.
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31 Also see http://www.SafeRTOS.com for an IEC 61508 compliant version along
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32 with commercial development and support options.
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33 ***************************************************************************
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37 Implements a simplistic WEB server. Every time a connection is made and
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38 data is received a dynamic page that shows the current TCP/IP statistics
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39 is generated and returned. The connection is then closed.
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41 This file was adapted from a FreeRTOS lwIP slip demo supplied by a third
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48 + Changed the page returned by the lwIP WEB server demo to display the
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49 task status table rather than the TCP/IP statistics.
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53 /* Standard includes. */
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57 /* Scheduler includes. */
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58 #include "FreeRTOS.h"
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62 /* Demo includes. */
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63 #include "BasicWEB.h"
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64 #include "SAM7_EMAC.h"
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66 /* lwIP includes. */
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67 #include "lwip/api.h"
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68 #include "lwip/tcpip.h"
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69 #include "lwip/memp.h"
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70 #include "lwip/stats.h"
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71 #include "netif/loopif.h"
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73 /* The size of the buffer in which the dynamic WEB page is created. */
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74 #define webMAX_PAGE_SIZE 2048
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76 /* Standard GET response. */
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77 #define webHTTP_OK "HTTP/1.0 200 OK\r\nContent-type: text/html\r\n\r\n"
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79 /* The port on which we listen. */
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80 #define webHTTP_PORT ( 80 )
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82 /* Delay on close error. */
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83 #define webSHORT_DELAY ( 10 )
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85 /* Format of the dynamic page that is returned on each connection. */
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86 #define webHTML_START \
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90 <BODY onLoad=\"window.setTimeout("location.href='index.html'",1000)\"bgcolor=\"#CCCCff\">\
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93 #define webHTML_END \
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98 /*------------------------------------------------------------*/
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101 * Process an incoming connection on port 80.
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103 * This simply checks to see if the incoming data contains a GET request, and
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104 * if so sends back a single dynamically created page. The connection is then
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105 * closed. A more complete implementation could create a task for each
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108 static void vProcessConnection( struct netconn *pxNetCon );
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110 /*------------------------------------------------------------*/
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112 static void vProcessConnection( struct netconn *pxNetCon )
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114 static portCHAR cDynamicPage[ webMAX_PAGE_SIZE ], cPageHits[ 11 ];
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115 struct netbuf *pxRxBuffer;
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116 portCHAR *pcRxString;
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117 unsigned portSHORT usLength;
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118 static unsigned portLONG ulPageHits = 0;
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120 /* We expect to immediately get data. */
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121 pxRxBuffer = netconn_recv( pxNetCon );
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123 if( pxRxBuffer != NULL )
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125 /* Where is the data? */
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126 netbuf_data( pxRxBuffer, ( void * ) &pcRxString, &usLength );
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128 /* Is this a GET? We don't handle anything else. */
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129 if( !strncmp( pcRxString, "GET", 3 ) )
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131 pcRxString = cDynamicPage;
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133 /* Update the hit count. */
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135 sprintf( cPageHits, "%lu", ulPageHits );
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137 /* Write out the HTTP OK header. */
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138 netconn_write(pxNetCon, webHTTP_OK, (u16_t)strlen( webHTTP_OK ), NETCONN_COPY );
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140 /* Generate the dynamic page...
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142 ... First the page header. */
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143 strcpy( cDynamicPage, webHTML_START );
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144 /* ... Then the hit count... */
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145 strcat( cDynamicPage, cPageHits );
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146 strcat( cDynamicPage, "<p><pre>Task State Priority Stack #<br>************************************************<br>" );
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147 /* ... Then the list of tasks and their status... */
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148 vTaskList( ( signed portCHAR * ) cDynamicPage + strlen( cDynamicPage ) );
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149 /* ... Finally the page footer. */
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150 strcat( cDynamicPage, webHTML_END );
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152 /* Write out the dynamically generated page. */
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153 netconn_write(pxNetCon, cDynamicPage, (u16_t)strlen( cDynamicPage ), NETCONN_COPY );
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156 netbuf_delete( pxRxBuffer );
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159 netconn_close( pxNetCon );
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161 /*------------------------------------------------------------*/
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163 void vlwIPInit( void )
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165 /* Initialize lwIP and its interface layer. */
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172 tcpip_init( NULL, NULL );
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174 /*------------------------------------------------------------*/
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176 void vBasicWEBServer( void *pvParameters )
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178 struct netconn *pxHTTPListener, *pxNewConnection;
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179 struct ip_addr xIpAddr, xNetMast, xGateway;
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180 extern err_t ethernetif_init( struct netif *netif );
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181 static struct netif EMAC_if;
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183 /* Parameters are not used - suppress compiler error. */
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184 ( void ) pvParameters;
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187 /* Create and configure the EMAC interface. */
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188 IP4_ADDR(&xIpAddr,emacIPADDR0,emacIPADDR1,emacIPADDR2,emacIPADDR3);
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189 IP4_ADDR(&xNetMast,emacNET_MASK0,emacNET_MASK1,emacNET_MASK2,emacNET_MASK3);
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190 IP4_ADDR(&xGateway,emacGATEWAY_ADDR0,emacGATEWAY_ADDR1,emacGATEWAY_ADDR2,emacGATEWAY_ADDR3);
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191 netif_add(&EMAC_if, &xIpAddr, &xNetMast, &xGateway, NULL, ethernetif_init, tcpip_input);
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193 /* make it the default interface */
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194 netif_set_default(&EMAC_if);
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197 netif_set_up(&EMAC_if);
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199 /* Create a new tcp connection handle */
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201 pxHTTPListener = netconn_new( NETCONN_TCP );
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202 netconn_bind(pxHTTPListener, NULL, webHTTP_PORT );
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203 netconn_listen( pxHTTPListener );
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208 /* Wait for connection. */
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209 pxNewConnection = netconn_accept(pxHTTPListener);
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211 if(pxNewConnection != NULL)
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213 /* Service connection. */
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214 vProcessConnection( pxNewConnection );
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215 while( netconn_delete( pxNewConnection ) != ERR_OK )
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217 vTaskDelay( webSHORT_DELAY );
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