2 FreeRTOS V8.0.1 - Copyright (C) 2014 Real Time Engineers Ltd.
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5 VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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7 ***************************************************************************
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9 * FreeRTOS provides completely free yet professionally developed, *
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10 * robust, strictly quality controlled, supported, and cross *
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11 * platform software that has become a de facto standard. *
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13 * Help yourself get started quickly and support the FreeRTOS *
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14 * project by purchasing a FreeRTOS tutorial book, reference *
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15 * manual, or both from: http://www.FreeRTOS.org/Documentation *
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19 ***************************************************************************
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21 This file is part of the FreeRTOS distribution.
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23 FreeRTOS is free software; you can redistribute it and/or modify it under
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24 the terms of the GNU General Public License (version 2) as published by the
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25 Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
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27 >>! NOTE: The modification to the GPL is included to allow you to !<<
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28 >>! distribute a combined work that includes FreeRTOS without being !<<
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29 >>! obliged to provide the source code for proprietary components !<<
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30 >>! outside of the FreeRTOS kernel. !<<
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32 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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33 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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34 FOR A PARTICULAR PURPOSE. Full license text is available from the following
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35 link: http://www.freertos.org/a00114.html
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39 ***************************************************************************
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41 * Having a problem? Start by reading the FAQ "My application does *
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42 * not run, what could be wrong?" *
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44 * http://www.FreeRTOS.org/FAQHelp.html *
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46 ***************************************************************************
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48 http://www.FreeRTOS.org - Documentation, books, training, latest versions,
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49 license and Real Time Engineers Ltd. contact details.
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51 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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52 including FreeRTOS+Trace - an indispensable productivity tool, a DOS
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53 compatible FAT file system, and our tiny thread aware UDP/IP stack.
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55 http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
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56 Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
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57 licenses offer ticketed support, indemnification and middleware.
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59 http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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60 engineered and independently SIL3 certified version for use in safety and
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61 mission critical applications that require provable dependability.
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67 Implements a simplistic WEB server. Every time a connection is made and
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68 data is received a dynamic page that shows the current TCP/IP statistics
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69 is generated and returned. The connection is then closed.
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71 This file was adapted from a FreeRTOS lwIP slip demo supplied by a third
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78 + Changed the page returned by the lwIP WEB server demo to display the
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79 task status table rather than the TCP/IP statistics.
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83 /* Standard includes. */
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87 /* Scheduler includes. */
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88 #include "FreeRTOS.h"
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92 /* Demo includes. */
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93 #include "BasicWEB.h"
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94 #include "SAM7_EMAC.h"
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96 /* lwIP includes. */
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97 #include "lwip/api.h"
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98 #include "lwip/tcpip.h"
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99 #include "lwip/memp.h"
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100 #include "lwip/stats.h"
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101 #include "netif/loopif.h"
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103 /* The size of the buffer in which the dynamic WEB page is created. */
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104 #define webMAX_PAGE_SIZE 2048
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106 /* Standard GET response. */
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107 #define webHTTP_OK "HTTP/1.0 200 OK\r\nContent-type: text/html\r\n\r\n"
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109 /* The port on which we listen. */
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110 #define webHTTP_PORT ( 80 )
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112 /* Delay on close error. */
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113 #define webSHORT_DELAY ( 10 )
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115 /* Format of the dynamic page that is returned on each connection. */
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116 #define webHTML_START \
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120 <BODY onLoad=\"window.setTimeout("location.href='index.html'",1000)\"bgcolor=\"#CCCCff\">\
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123 #define webHTML_END \
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128 /*------------------------------------------------------------*/
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131 * Process an incoming connection on port 80.
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133 * This simply checks to see if the incoming data contains a GET request, and
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134 * if so sends back a single dynamically created page. The connection is then
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135 * closed. A more complete implementation could create a task for each
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138 static void vProcessConnection( struct netconn *pxNetCon );
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140 /*------------------------------------------------------------*/
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142 static void vProcessConnection( struct netconn *pxNetCon )
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144 static char cDynamicPage[ webMAX_PAGE_SIZE ], cPageHits[ 11 ];
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145 struct netbuf *pxRxBuffer;
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147 unsigned short usLength;
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148 static unsigned long ulPageHits = 0;
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150 /* We expect to immediately get data. */
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151 pxRxBuffer = netconn_recv( pxNetCon );
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153 if( pxRxBuffer != NULL )
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155 /* Where is the data? */
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156 netbuf_data( pxRxBuffer, ( void * ) &pcRxString, &usLength );
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158 /* Is this a GET? We don't handle anything else. */
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159 if( !strncmp( pcRxString, "GET", 3 ) )
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161 pcRxString = cDynamicPage;
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163 /* Update the hit count. */
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165 sprintf( cPageHits, "%lu", ulPageHits );
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167 /* Write out the HTTP OK header. */
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168 netconn_write(pxNetCon, webHTTP_OK, (u16_t)strlen( webHTTP_OK ), NETCONN_COPY );
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170 /* Generate the dynamic page...
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172 ... First the page header. */
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173 strcpy( cDynamicPage, webHTML_START );
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174 /* ... Then the hit count... */
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175 strcat( cDynamicPage, cPageHits );
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176 strcat( cDynamicPage, "<p><pre>Task State Priority Stack #<br>************************************************<br>" );
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177 /* ... Then the list of tasks and their status... */
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178 vTaskList( cDynamicPage + strlen( cDynamicPage ) );
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179 /* ... Finally the page footer. */
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180 strcat( cDynamicPage, webHTML_END );
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182 /* Write out the dynamically generated page. */
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183 netconn_write(pxNetCon, cDynamicPage, (u16_t)strlen( cDynamicPage ), NETCONN_COPY );
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186 netbuf_delete( pxRxBuffer );
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189 netconn_close( pxNetCon );
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191 /*------------------------------------------------------------*/
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193 void vlwIPInit( void )
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195 /* Initialize lwIP and its interface layer. */
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202 tcpip_init( NULL, NULL );
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204 /*------------------------------------------------------------*/
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206 void vBasicWEBServer( void *pvParameters )
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208 struct netconn *pxHTTPListener, *pxNewConnection;
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209 struct ip_addr xIpAddr, xNetMast, xGateway;
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210 extern err_t ethernetif_init( struct netif *netif );
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211 static struct netif EMAC_if;
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213 /* Parameters are not used - suppress compiler error. */
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214 ( void ) pvParameters;
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217 /* Create and configure the EMAC interface. */
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218 IP4_ADDR(&xIpAddr,emacIPADDR0,emacIPADDR1,emacIPADDR2,emacIPADDR3);
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219 IP4_ADDR(&xNetMast,emacNET_MASK0,emacNET_MASK1,emacNET_MASK2,emacNET_MASK3);
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220 IP4_ADDR(&xGateway,emacGATEWAY_ADDR0,emacGATEWAY_ADDR1,emacGATEWAY_ADDR2,emacGATEWAY_ADDR3);
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221 netif_add(&EMAC_if, &xIpAddr, &xNetMast, &xGateway, NULL, ethernetif_init, tcpip_input);
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223 /* make it the default interface */
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224 netif_set_default(&EMAC_if);
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227 netif_set_up(&EMAC_if);
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229 /* Create a new tcp connection handle */
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231 pxHTTPListener = netconn_new( NETCONN_TCP );
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232 netconn_bind(pxHTTPListener, NULL, webHTTP_PORT );
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233 netconn_listen( pxHTTPListener );
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238 /* Wait for connection. */
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239 pxNewConnection = netconn_accept(pxHTTPListener);
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241 if(pxNewConnection != NULL)
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243 /* Service connection. */
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244 vProcessConnection( pxNewConnection );
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245 while( netconn_delete( pxNewConnection ) != ERR_OK )
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247 vTaskDelay( webSHORT_DELAY );
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