2 FreeRTOS.org V4.7.1 - Copyright (C) 2003-2008 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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28 Please ensure to read the configuration and relevant port sections of the
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29 online documentation.
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31 +++ http://www.FreeRTOS.org +++
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32 Documentation, latest information, license and contact details.
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34 +++ http://www.SafeRTOS.com +++
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35 A version that is certified for use in safety critical systems.
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37 +++ http://www.OpenRTOS.com +++
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38 Commercial support, development, porting, licensing and training services.
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40 ***************************************************************************
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44 Implements a simplistic WEB server. Every time a connection is made and
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45 data is received a dynamic page that shows the current TCP/IP statistics
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46 is generated and returned. The connection is then closed.
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48 This file was adapted from a FreeRTOS lwIP slip demo supplied by a third
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55 + Changed the page returned by the lwIP WEB server demo to display the
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56 task status table rather than the TCP/IP statistics.
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60 /* Standard includes. */
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64 /* Scheduler includes. */
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65 #include "FreeRTOS.h"
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69 /* Demo includes. */
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70 #include "BasicWEB.h"
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71 #include "SAM7_EMAC.h"
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73 /* lwIP includes. */
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74 #include "lwip/api.h"
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75 #include "lwip/tcpip.h"
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76 #include "lwip/memp.h"
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77 #include "lwip/stats.h"
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78 #include "netif/loopif.h"
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80 /* The size of the buffer in which the dynamic WEB page is created. */
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81 #define webMAX_PAGE_SIZE 2048
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83 /* Standard GET response. */
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84 #define webHTTP_OK "HTTP/1.0 200 OK\r\nContent-type: text/html\r\n\r\n"
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86 /* The port on which we listen. */
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87 #define webHTTP_PORT ( 80 )
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89 /* Delay on close error. */
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90 #define webSHORT_DELAY ( 10 )
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92 /* Format of the dynamic page that is returned on each connection. */
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93 #define webHTML_START \
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97 <BODY onLoad=\"window.setTimeout("location.href='index.html'",1000)\"bgcolor=\"#CCCCff\">\
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100 #define webHTML_END \
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105 /*------------------------------------------------------------*/
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108 * Process an incoming connection on port 80.
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110 * This simply checks to see if the incoming data contains a GET request, and
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111 * if so sends back a single dynamically created page. The connection is then
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112 * closed. A more complete implementation could create a task for each
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115 static void vProcessConnection( struct netconn *pxNetCon );
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117 /*------------------------------------------------------------*/
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119 static void vProcessConnection( struct netconn *pxNetCon )
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121 static portCHAR cDynamicPage[ webMAX_PAGE_SIZE ], cPageHits[ 11 ];
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122 struct netbuf *pxRxBuffer;
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123 portCHAR *pcRxString;
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124 unsigned portSHORT usLength;
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125 static unsigned portLONG ulPageHits = 0;
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127 /* We expect to immediately get data. */
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128 pxRxBuffer = netconn_recv( pxNetCon );
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130 if( pxRxBuffer != NULL )
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132 /* Where is the data? */
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133 netbuf_data( pxRxBuffer, ( void * ) &pcRxString, &usLength );
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135 /* Is this a GET? We don't handle anything else. */
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136 if( !strncmp( pcRxString, "GET", 3 ) )
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138 pcRxString = cDynamicPage;
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140 /* Update the hit count. */
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142 sprintf( cPageHits, "%lu", ulPageHits );
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144 /* Write out the HTTP OK header. */
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145 netconn_write(pxNetCon, webHTTP_OK, (u16_t)strlen( webHTTP_OK ), NETCONN_COPY );
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147 /* Generate the dynamic page...
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149 ... First the page header. */
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150 strcpy( cDynamicPage, webHTML_START );
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151 /* ... Then the hit count... */
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152 strcat( cDynamicPage, cPageHits );
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153 strcat( cDynamicPage, "<p><pre>Task State Priority Stack #<br>************************************************<br>" );
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154 /* ... Then the list of tasks and their status... */
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155 vTaskList( ( signed portCHAR * ) cDynamicPage + strlen( cDynamicPage ) );
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156 /* ... Finally the page footer. */
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157 strcat( cDynamicPage, webHTML_END );
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159 /* Write out the dynamically generated page. */
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160 netconn_write(pxNetCon, cDynamicPage, (u16_t)strlen( cDynamicPage ), NETCONN_COPY );
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163 netbuf_delete( pxRxBuffer );
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166 netconn_close( pxNetCon );
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168 /*------------------------------------------------------------*/
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170 void vlwIPInit( void )
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172 /* Initialize lwIP and its interface layer. */
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179 tcpip_init( NULL, NULL );
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181 /*------------------------------------------------------------*/
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183 void vBasicWEBServer( void *pvParameters )
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185 struct netconn *pxHTTPListener, *pxNewConnection;
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186 struct ip_addr xIpAddr, xNetMast, xGateway;
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187 extern err_t ethernetif_init( struct netif *netif );
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188 static struct netif EMAC_if;
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190 /* Parameters are not used - suppress compiler error. */
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191 ( void ) pvParameters;
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194 /* Create and configure the EMAC interface. */
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195 IP4_ADDR(&xIpAddr,emacIPADDR0,emacIPADDR1,emacIPADDR2,emacIPADDR3);
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196 IP4_ADDR(&xNetMast,emacNET_MASK0,emacNET_MASK1,emacNET_MASK2,emacNET_MASK3);
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197 IP4_ADDR(&xGateway,emacGATEWAY_ADDR0,emacGATEWAY_ADDR1,emacGATEWAY_ADDR2,emacGATEWAY_ADDR3);
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198 netif_add(&EMAC_if, &xIpAddr, &xNetMast, &xGateway, NULL, ethernetif_init, tcpip_input);
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200 /* make it the default interface */
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201 netif_set_default(&EMAC_if);
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204 netif_set_up(&EMAC_if);
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206 /* Create a new tcp connection handle */
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208 pxHTTPListener = netconn_new( NETCONN_TCP );
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209 netconn_bind(pxHTTPListener, NULL, webHTTP_PORT );
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210 netconn_listen( pxHTTPListener );
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215 /* Wait for connection. */
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216 pxNewConnection = netconn_accept(pxHTTPListener);
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218 if(pxNewConnection != NULL)
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220 /* Service connection. */
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221 vProcessConnection( pxNewConnection );
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222 while( netconn_delete( pxNewConnection ) != ERR_OK )
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224 vTaskDelay( webSHORT_DELAY );
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