2 FreeRTOS V7.5.2 - Copyright (C) 2013 Real Time Engineers Ltd.
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4 VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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6 ***************************************************************************
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8 * FreeRTOS provides completely free yet professionally developed, *
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9 * robust, strictly quality controlled, supported, and cross *
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10 * platform software that has become a de facto standard. *
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12 * Help yourself get started quickly and support the FreeRTOS *
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13 * project by purchasing a FreeRTOS tutorial book, reference *
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14 * manual, or both from: http://www.FreeRTOS.org/Documentation *
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18 ***************************************************************************
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20 This file is part of the FreeRTOS distribution.
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22 FreeRTOS is free software; you can redistribute it and/or modify it under
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23 the terms of the GNU General Public License (version 2) as published by the
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24 Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
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26 >>! NOTE: The modification to the GPL is included to allow you to distribute
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27 >>! a combined work that includes FreeRTOS without being obliged to provide
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28 >>! the source code for proprietary components outside of the FreeRTOS
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31 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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32 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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33 FOR A PARTICULAR PURPOSE. Full license text is available from the following
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34 link: http://www.freertos.org/a00114.html
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38 ***************************************************************************
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40 * Having a problem? Start by reading the FAQ "My application does *
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41 * not run, what could be wrong?" *
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43 * http://www.FreeRTOS.org/FAQHelp.html *
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45 ***************************************************************************
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47 http://www.FreeRTOS.org - Documentation, books, training, latest versions,
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48 license and Real Time Engineers Ltd. contact details.
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50 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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51 including FreeRTOS+Trace - an indispensable productivity tool, a DOS
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52 compatible FAT file system, and our tiny thread aware UDP/IP stack.
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54 http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
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55 Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
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56 licenses offer ticketed support, indemnification and middleware.
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58 http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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59 engineered and independently SIL3 certified version for use in safety and
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60 mission critical applications that require provable dependability.
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66 Implements a simplistic WEB server. Every time a connection is made and
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67 data is received a dynamic page that shows the current TCP/IP statistics
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68 is generated and returned. The connection is then closed.
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70 This file was adapted from a FreeRTOS lwIP slip demo supplied by a third
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77 + Changed the page returned by the lwIP WEB server demo to display the
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78 task status table rather than the TCP/IP statistics.
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82 /* Standard includes. */
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86 /* Scheduler includes. */
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87 #include "FreeRTOS.h"
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91 /* Demo includes. */
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92 #include "BasicWEB.h"
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93 #include "SAM7_EMAC.h"
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95 /* lwIP includes. */
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96 #include "lwip/api.h"
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97 #include "lwip/tcpip.h"
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98 #include "lwip/memp.h"
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99 #include "lwip/stats.h"
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100 #include "netif/loopif.h"
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102 /* The size of the buffer in which the dynamic WEB page is created. */
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103 #define webMAX_PAGE_SIZE 2048
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105 /* Standard GET response. */
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106 #define webHTTP_OK "HTTP/1.0 200 OK\r\nContent-type: text/html\r\n\r\n"
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108 /* The port on which we listen. */
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109 #define webHTTP_PORT ( 80 )
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111 /* Delay on close error. */
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112 #define webSHORT_DELAY ( 10 )
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114 /* Format of the dynamic page that is returned on each connection. */
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115 #define webHTML_START \
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119 <BODY onLoad=\"window.setTimeout("location.href='index.html'",1000)\"bgcolor=\"#CCCCff\">\
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122 #define webHTML_END \
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127 /*------------------------------------------------------------*/
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130 * Process an incoming connection on port 80.
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132 * This simply checks to see if the incoming data contains a GET request, and
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133 * if so sends back a single dynamically created page. The connection is then
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134 * closed. A more complete implementation could create a task for each
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137 static void vProcessConnection( struct netconn *pxNetCon );
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139 /*------------------------------------------------------------*/
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141 static void vProcessConnection( struct netconn *pxNetCon )
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143 static char cDynamicPage[ webMAX_PAGE_SIZE ], cPageHits[ 11 ];
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144 struct netbuf *pxRxBuffer;
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146 unsigned short usLength;
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147 static unsigned long ulPageHits = 0;
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149 /* We expect to immediately get data. */
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150 pxRxBuffer = netconn_recv( pxNetCon );
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152 if( pxRxBuffer != NULL )
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154 /* Where is the data? */
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155 netbuf_data( pxRxBuffer, ( void * ) &pcRxString, &usLength );
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157 /* Is this a GET? We don't handle anything else. */
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158 if( !strncmp( pcRxString, "GET", 3 ) )
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160 pcRxString = cDynamicPage;
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162 /* Update the hit count. */
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164 sprintf( cPageHits, "%lu", ulPageHits );
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166 /* Write out the HTTP OK header. */
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167 netconn_write(pxNetCon, webHTTP_OK, (u16_t)strlen( webHTTP_OK ), NETCONN_COPY );
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169 /* Generate the dynamic page...
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171 ... First the page header. */
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172 strcpy( cDynamicPage, webHTML_START );
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173 /* ... Then the hit count... */
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174 strcat( cDynamicPage, cPageHits );
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175 strcat( cDynamicPage, "<p><pre>Task State Priority Stack #<br>************************************************<br>" );
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176 /* ... Then the list of tasks and their status... */
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177 vTaskList( ( signed char * ) cDynamicPage + strlen( cDynamicPage ) );
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178 /* ... Finally the page footer. */
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179 strcat( cDynamicPage, webHTML_END );
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181 /* Write out the dynamically generated page. */
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182 netconn_write(pxNetCon, cDynamicPage, (u16_t)strlen( cDynamicPage ), NETCONN_COPY );
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185 netbuf_delete( pxRxBuffer );
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188 netconn_close( pxNetCon );
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190 /*------------------------------------------------------------*/
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192 void vlwIPInit( void )
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194 /* Initialize lwIP and its interface layer. */
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201 tcpip_init( NULL, NULL );
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203 /*------------------------------------------------------------*/
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205 void vBasicWEBServer( void *pvParameters )
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207 struct netconn *pxHTTPListener, *pxNewConnection;
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208 struct ip_addr xIpAddr, xNetMast, xGateway;
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209 extern err_t ethernetif_init( struct netif *netif );
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210 static struct netif EMAC_if;
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212 /* Parameters are not used - suppress compiler error. */
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213 ( void ) pvParameters;
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216 /* Create and configure the EMAC interface. */
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217 IP4_ADDR(&xIpAddr,emacIPADDR0,emacIPADDR1,emacIPADDR2,emacIPADDR3);
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218 IP4_ADDR(&xNetMast,emacNET_MASK0,emacNET_MASK1,emacNET_MASK2,emacNET_MASK3);
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219 IP4_ADDR(&xGateway,emacGATEWAY_ADDR0,emacGATEWAY_ADDR1,emacGATEWAY_ADDR2,emacGATEWAY_ADDR3);
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220 netif_add(&EMAC_if, &xIpAddr, &xNetMast, &xGateway, NULL, ethernetif_init, tcpip_input);
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222 /* make it the default interface */
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223 netif_set_default(&EMAC_if);
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226 netif_set_up(&EMAC_if);
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228 /* Create a new tcp connection handle */
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230 pxHTTPListener = netconn_new( NETCONN_TCP );
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231 netconn_bind(pxHTTPListener, NULL, webHTTP_PORT );
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232 netconn_listen( pxHTTPListener );
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237 /* Wait for connection. */
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238 pxNewConnection = netconn_accept(pxHTTPListener);
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240 if(pxNewConnection != NULL)
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242 /* Service connection. */
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243 vProcessConnection( pxNewConnection );
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244 while( netconn_delete( pxNewConnection ) != ERR_OK )
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246 vTaskDelay( webSHORT_DELAY );
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