2 FreeRTOS V7.4.2 - Copyright (C) 2013 Real Time Engineers Ltd.
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4 FEATURES AND PORTS ARE ADDED TO FREERTOS ALL THE TIME. PLEASE VISIT
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5 http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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7 ***************************************************************************
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9 * FreeRTOS tutorial books are available in pdf and paperback. *
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10 * Complete, revised, and edited pdf reference manuals are also *
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13 * Purchasing FreeRTOS documentation will not only help you, by *
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14 * ensuring you get running as quickly as possible and with an *
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15 * in-depth knowledge of how to use FreeRTOS, it will also help *
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16 * the FreeRTOS project to continue with its mission of providing *
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17 * professional grade, cross platform, de facto standard solutions *
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18 * for microcontrollers - completely free of charge! *
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20 * >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
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22 * Thank you for using FreeRTOS, and thank you for your support! *
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24 ***************************************************************************
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27 This file is part of the FreeRTOS distribution.
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29 FreeRTOS is free software; you can redistribute it and/or modify it under
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30 the terms of the GNU General Public License (version 2) as published by the
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31 Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
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33 >>>>>>NOTE<<<<<< The modification to the GPL is included to allow you to
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34 distribute a combined work that includes FreeRTOS without being obliged to
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35 provide the source code for proprietary components outside of the FreeRTOS
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38 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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39 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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40 FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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41 details. You should have received a copy of the GNU General Public License
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42 and the FreeRTOS license exception along with FreeRTOS; if not it can be
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43 viewed here: http://www.freertos.org/a00114.html and also obtained by
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44 writing to Real Time Engineers Ltd., contact details for whom are available
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45 on the FreeRTOS WEB site.
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49 ***************************************************************************
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51 * Having a problem? Start by reading the FAQ "My application does *
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52 * not run, what could be wrong?" *
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54 * http://www.FreeRTOS.org/FAQHelp.html *
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56 ***************************************************************************
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59 http://www.FreeRTOS.org - Documentation, books, training, latest versions,
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60 license and Real Time Engineers Ltd. contact details.
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62 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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63 including FreeRTOS+Trace - an indispensable productivity tool, and our new
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64 fully thread aware and reentrant UDP/IP stack.
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66 http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
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67 Integrity Systems, who sell the code with commercial support,
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68 indemnification and middleware, under the OpenRTOS brand.
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70 http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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71 engineered and independently SIL3 certified version for use in safety and
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72 mission critical applications that require provable dependability.
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76 Implements a simplistic WEB server. Every time a connection is made and
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77 data is received a dynamic page that shows the current TCP/IP statistics
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78 is generated and returned. The connection is then closed.
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80 This file was adapted from a FreeRTOS lwIP slip demo supplied by a third
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87 + Changed the page returned by the lwIP WEB server demo to display the
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88 task status table rather than the TCP/IP statistics.
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92 /* Standard includes. */
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96 /* Scheduler includes. */
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97 #include "FreeRTOS.h"
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101 /* Demo includes. */
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102 #include "BasicWEB.h"
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103 #include "SAM7_EMAC.h"
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105 /* lwIP includes. */
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106 #include "lwip/api.h"
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107 #include "lwip/tcpip.h"
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108 #include "lwip/memp.h"
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109 #include "lwip/stats.h"
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110 #include "netif/loopif.h"
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112 /* The size of the buffer in which the dynamic WEB page is created. */
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113 #define webMAX_PAGE_SIZE 2048
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115 /* Standard GET response. */
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116 #define webHTTP_OK "HTTP/1.0 200 OK\r\nContent-type: text/html\r\n\r\n"
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118 /* The port on which we listen. */
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119 #define webHTTP_PORT ( 80 )
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121 /* Delay on close error. */
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122 #define webSHORT_DELAY ( 10 )
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124 /* Format of the dynamic page that is returned on each connection. */
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125 #define webHTML_START \
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129 <BODY onLoad=\"window.setTimeout("location.href='index.html'",1000)\"bgcolor=\"#CCCCff\">\
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132 #define webHTML_END \
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137 /*------------------------------------------------------------*/
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140 * Process an incoming connection on port 80.
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142 * This simply checks to see if the incoming data contains a GET request, and
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143 * if so sends back a single dynamically created page. The connection is then
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144 * closed. A more complete implementation could create a task for each
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147 static void vProcessConnection( struct netconn *pxNetCon );
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149 /*------------------------------------------------------------*/
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151 static void vProcessConnection( struct netconn *pxNetCon )
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153 static char cDynamicPage[ webMAX_PAGE_SIZE ], cPageHits[ 11 ];
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154 struct netbuf *pxRxBuffer;
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156 unsigned short usLength;
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157 static unsigned long ulPageHits = 0;
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159 /* We expect to immediately get data. */
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160 pxRxBuffer = netconn_recv( pxNetCon );
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162 if( pxRxBuffer != NULL )
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164 /* Where is the data? */
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165 netbuf_data( pxRxBuffer, ( void * ) &pcRxString, &usLength );
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167 /* Is this a GET? We don't handle anything else. */
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168 if( !strncmp( pcRxString, "GET", 3 ) )
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170 pcRxString = cDynamicPage;
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172 /* Update the hit count. */
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174 sprintf( cPageHits, "%lu", ulPageHits );
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176 /* Write out the HTTP OK header. */
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177 netconn_write(pxNetCon, webHTTP_OK, (u16_t)strlen( webHTTP_OK ), NETCONN_COPY );
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179 /* Generate the dynamic page...
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181 ... First the page header. */
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182 strcpy( cDynamicPage, webHTML_START );
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183 /* ... Then the hit count... */
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184 strcat( cDynamicPage, cPageHits );
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185 strcat( cDynamicPage, "<p><pre>Task State Priority Stack #<br>************************************************<br>" );
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186 /* ... Then the list of tasks and their status... */
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187 vTaskList( ( signed char * ) cDynamicPage + strlen( cDynamicPage ) );
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188 /* ... Finally the page footer. */
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189 strcat( cDynamicPage, webHTML_END );
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191 /* Write out the dynamically generated page. */
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192 netconn_write(pxNetCon, cDynamicPage, (u16_t)strlen( cDynamicPage ), NETCONN_COPY );
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195 netbuf_delete( pxRxBuffer );
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198 netconn_close( pxNetCon );
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200 /*------------------------------------------------------------*/
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202 void vlwIPInit( void )
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204 /* Initialize lwIP and its interface layer. */
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211 tcpip_init( NULL, NULL );
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213 /*------------------------------------------------------------*/
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215 void vBasicWEBServer( void *pvParameters )
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217 struct netconn *pxHTTPListener, *pxNewConnection;
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218 struct ip_addr xIpAddr, xNetMast, xGateway;
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219 extern err_t ethernetif_init( struct netif *netif );
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220 static struct netif EMAC_if;
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222 /* Parameters are not used - suppress compiler error. */
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223 ( void ) pvParameters;
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226 /* Create and configure the EMAC interface. */
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227 IP4_ADDR(&xIpAddr,emacIPADDR0,emacIPADDR1,emacIPADDR2,emacIPADDR3);
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228 IP4_ADDR(&xNetMast,emacNET_MASK0,emacNET_MASK1,emacNET_MASK2,emacNET_MASK3);
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229 IP4_ADDR(&xGateway,emacGATEWAY_ADDR0,emacGATEWAY_ADDR1,emacGATEWAY_ADDR2,emacGATEWAY_ADDR3);
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230 netif_add(&EMAC_if, &xIpAddr, &xNetMast, &xGateway, NULL, ethernetif_init, tcpip_input);
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232 /* make it the default interface */
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233 netif_set_default(&EMAC_if);
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236 netif_set_up(&EMAC_if);
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238 /* Create a new tcp connection handle */
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240 pxHTTPListener = netconn_new( NETCONN_TCP );
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241 netconn_bind(pxHTTPListener, NULL, webHTTP_PORT );
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242 netconn_listen( pxHTTPListener );
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247 /* Wait for connection. */
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248 pxNewConnection = netconn_accept(pxHTTPListener);
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250 if(pxNewConnection != NULL)
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252 /* Service connection. */
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253 vProcessConnection( pxNewConnection );
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254 while( netconn_delete( pxNewConnection ) != ERR_OK )
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256 vTaskDelay( webSHORT_DELAY );
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