2 FreeRTOS V4.1.0 - copyright (C) 2003-2006 Richard Barry.
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4 This file is part of the FreeRTOS distribution.
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6 FreeRTOS 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 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; 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, 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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45 /* ------------------------ System includes ------------------------------- */
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49 /* ------------------------ FreeRTOS includes ----------------------------- */
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50 #include "FreeRTOS.h"
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54 /* ------------------------ lwIP includes --------------------------------- */
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55 #include "lwip/api.h"
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56 #include "lwip/tcpip.h"
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57 #include "lwip/memp.h"
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58 #include "lwip/stats.h"
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59 #include "netif/loopif.h"
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61 /* ------------------------ Project includes ------------------------------ */
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62 #include "mcf5xxx.h"
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63 #include "mcf523x.h"
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64 #include "netif/fec.h"
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68 /* ------------------------ Defines --------------------------------------- */
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69 /* The size of the buffer in which the dynamic WEB page is created. */
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70 #define webMAX_PAGE_SIZE ( 2048 )
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72 /* Standard GET response. */
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73 #define webHTTP_OK "HTTP/1.0 200 OK\r\nContent-type: text/html\r\n\r\n"
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75 /* The port on which we listen. */
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76 #define webHTTP_PORT ( 80 )
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78 /* Delay on close error. */
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79 #define webSHORT_DELAY ( 10 )
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81 /* Format of the dynamic page that is returned on each connection. */
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82 #define webHTML_START \
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86 <BODY onLoad=\"window.setTimeout("location.href='index.html'",1000)\"bgcolor=\"#CCCCff\">\
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89 #define webHTML_END \
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91 "FreeRTOS MCF5235 port (c) 2006 by Christian Walter <wolti@sil.at>\r\n" \
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96 /* ------------------------ Prototypes ------------------------------------ */
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97 static void vProcessConnection( struct netconn *pxNetCon );
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99 /*------------------------------------------------------------*/
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102 * Process an incoming connection on port 80.
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104 * This simply checks to see if the incoming data contains a GET request, and
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105 * if so sends back a single dynamically created page. The connection is then
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106 * closed. A more complete implementation could create a task for each
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110 vProcessConnection( struct netconn *pxNetCon )
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112 static portCHAR cDynamicPage[webMAX_PAGE_SIZE], cPageHits[11];
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113 struct netbuf *pxRxBuffer;
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114 portCHAR *pcRxString;
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115 unsigned portSHORT usLength;
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116 static unsigned portLONG ulPageHits = 0;
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118 /* We expect to immediately get data. */
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119 pxRxBuffer = netconn_recv( pxNetCon );
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121 if( pxRxBuffer != NULL )
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123 /* Where is the data? */
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124 netbuf_data( pxRxBuffer, ( void * )&pcRxString, &usLength );
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126 /* Is this a GET? We don't handle anything else. */
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127 if( !strncmp( pcRxString, "GET", 3 ) )
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129 pcRxString = cDynamicPage;
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131 /* Update the hit count. */
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133 sprintf( cPageHits, "%lu", ulPageHits );
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135 /* Write out the HTTP OK header. */
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136 netconn_write( pxNetCon, webHTTP_OK, ( u16_t ) strlen( webHTTP_OK ), NETCONN_COPY );
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138 /* Generate the dynamic page...
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140 ... First the page header. */
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141 strcpy( cDynamicPage, webHTML_START );
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142 /* ... Then the hit count... */
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143 strcat( cDynamicPage, cPageHits );
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144 strcat( cDynamicPage,
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145 "<p><pre>Task State Priority Stack #<br>************************************************<br>" );
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146 /* ... Then the list of tasks and their status... */
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147 vTaskList( ( signed portCHAR * )cDynamicPage + strlen( cDynamicPage ) );
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148 /* ... Finally the page footer. */
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149 strcat( cDynamicPage, webHTML_END );
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151 /* Write out the dynamically generated page. */
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152 netconn_write( pxNetCon, cDynamicPage, ( u16_t ) strlen( cDynamicPage ), NETCONN_COPY );
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155 netbuf_delete( pxRxBuffer );
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158 netconn_close( pxNetCon );
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161 /*------------------------------------------------------------*/
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166 /* Initialize lwIP and its interface layer. */
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173 tcpip_init( NULL, NULL );
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176 /*------------------------------------------------------------*/
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179 vBasicWEBServer( void *pvParameters )
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181 struct netconn *pxHTTPListener, *pxNewConnection;
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182 struct ip_addr xIpAddr, xNetMast, xGateway;
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183 static struct netif fec523x_if;
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185 /* Parameters are not used - suppress compiler error. */
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186 ( void )pvParameters;
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188 /* Create and configure the EMAC interface. */
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189 IP4_ADDR( &xIpAddr, 10, 0, 10, 2 );
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190 IP4_ADDR( &xNetMast, 255, 255, 255, 0 );
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191 IP4_ADDR( &xGateway, 10, 0, 10, 1 );
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192 netif_add( &fec523x_if, &xIpAddr, &xNetMast, &xGateway, NULL, mcf523xfec_init, tcpip_input );
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194 /* make it the default interface */
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195 netif_set_default( &fec523x_if );
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198 netif_set_up( &fec523x_if );
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200 /* 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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