2 FreeRTOS V8.2.0 - Copyright (C) 2015 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 This file is part of the FreeRTOS distribution.
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9 FreeRTOS is free software; you can redistribute it and/or modify it under
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10 the terms of the GNU General Public License (version 2) as published by the
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11 Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
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13 ***************************************************************************
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14 >>! NOTE: The modification to the GPL is included to allow you to !<<
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15 >>! distribute a combined work that includes FreeRTOS without being !<<
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16 >>! obliged to provide the source code for proprietary components !<<
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17 >>! outside of the FreeRTOS kernel. !<<
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18 ***************************************************************************
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20 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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21 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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22 FOR A PARTICULAR PURPOSE. Full license text is available on the following
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23 link: http://www.freertos.org/a00114.html
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25 ***************************************************************************
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27 * FreeRTOS provides completely free yet professionally developed, *
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28 * robust, strictly quality controlled, supported, and cross *
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29 * platform software that is more than just the market leader, it *
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30 * is the industry's de facto standard. *
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32 * Help yourself get started quickly while simultaneously helping *
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33 * to support the FreeRTOS project by purchasing a FreeRTOS *
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34 * tutorial book, reference manual, or both: *
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35 * http://www.FreeRTOS.org/Documentation *
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37 ***************************************************************************
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39 http://www.FreeRTOS.org/FAQHelp.html - Having a problem? Start by reading
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40 the FAQ page "My application does not run, what could be wrong?". Have you
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41 defined configASSERT()?
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43 http://www.FreeRTOS.org/support - In return for receiving this top quality
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44 embedded software for free we request you assist our global community by
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45 participating in the support forum.
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47 http://www.FreeRTOS.org/training - Investing in training allows your team to
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48 be as productive as possible as early as possible. Now you can receive
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49 FreeRTOS training directly from Richard Barry, CEO of Real Time Engineers
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50 Ltd, and the world's leading authority on the world's leading RTOS.
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52 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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53 including FreeRTOS+Trace - an indispensable productivity tool, a DOS
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54 compatible FAT file system, and our tiny thread aware UDP/IP stack.
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56 http://www.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate.
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57 Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS.
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59 http://www.OpenRTOS.com - Real Time Engineers ltd. license FreeRTOS to High
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60 Integrity Systems ltd. to sell under the OpenRTOS brand. Low cost OpenRTOS
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61 licenses offer ticketed support, indemnification and commercial middleware.
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63 http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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64 engineered and independently SIL3 certified version for use in safety and
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65 mission critical applications that require provable dependability.
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71 Implements a simplistic WEB server. Every time a connection is made and
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72 data is received a dynamic page that shows the current TCP/IP statistics
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73 is generated and returned. The connection is then closed.
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75 This file was adapted from a FreeRTOS lwIP slip demo supplied by a third
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79 /* ------------------------ System includes ------------------------------- */
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82 /* ------------------------ FreeRTOS includes ----------------------------- */
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83 #include "FreeRTOS.h"
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87 /* ------------------------ lwIP includes --------------------------------- */
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88 #include "lwip/api.h"
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89 #include "lwip/tcpip.h"
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90 #include "lwip/ip.h"
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91 #include "lwip/memp.h"
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92 #include "lwip/stats.h"
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93 #include "netif/loopif.h"
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95 /* ------------------------ Project includes ------------------------------ */
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98 #include "HTTPDemo.h"
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100 /* ------------------------ Defines --------------------------------------- */
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101 /* The size of the buffer in which the dynamic WEB page is created. */
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102 #define webMAX_PAGE_SIZE ( 1024 ) /*FSL: buffer containing array*/
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104 /* Standard GET response. */
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105 #define webHTTP_OK "HTTP/1.0 200 OK\r\nContent-type: text/html\r\n\r\n"
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107 /* The port on which we listen. */
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108 #define webHTTP_PORT ( 80 )
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110 /* Delay on close error. */
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111 #define webSHORT_DELAY ( 10 )
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113 /* Format of the dynamic page that is returned on each connection. */
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114 #define webHTML_START \
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118 <BODY onLoad=\"window.setTimeout("location.href='index.html'",1000)\"bgcolor=\"#CCCCff\">\
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119 \r\n\r\nPage Hits = "
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121 #define webHTML_END \
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127 #if INCLUDE_uxTaskGetStackHighWaterMark
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128 static volatile unsigned portBASE_TYPE uxHighWaterMark_web = 0;
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131 /* ------------------------ Prototypes ------------------------------------ */
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132 static void vProcessConnection( struct netconn *pxNetCon );
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134 /*------------------------------------------------------------*/
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137 * Process an incoming connection on port 80.
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139 * This simply checks to see if the incoming data contains a GET request, and
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140 * if so sends back a single dynamically created page. The connection is then
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141 * closed. A more complete implementation could create a task for each
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144 static void vProcessConnection( struct netconn *pxNetCon )
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146 static char cDynamicPage[webMAX_PAGE_SIZE], cPageHits[11];
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147 struct netbuf *pxRxBuffer;
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149 unsigned short usLength;
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150 static unsigned long ulPageHits = 0;
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152 /* We expect to immediately get data. */
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153 pxRxBuffer = netconn_recv( pxNetCon );
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155 if( pxRxBuffer != NULL )
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157 /* Where is the data? */
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158 netbuf_data( pxRxBuffer, ( void * )&pcRxString, &usLength );
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160 /* Is this a GET? We don't handle anything else. */
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161 if( !strncmp( pcRxString, "GET", 3 ) )
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163 pcRxString = cDynamicPage;
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165 /* Update the hit count. */
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167 sprintf( cPageHits, "%d", (int)ulPageHits );
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169 /* Write out the HTTP OK header. */
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170 netconn_write( pxNetCon, webHTTP_OK, ( u16_t ) strlen( webHTTP_OK ), NETCONN_COPY );
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172 /* Generate the dynamic page...
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174 ... First the page header. */
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175 strcpy( cDynamicPage, webHTML_START );
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176 /* ... Then the hit count... */
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177 strcat( cDynamicPage, cPageHits );
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179 strcat( cDynamicPage,
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180 "<p><pre>Task State Priority Stack #<br>************************************************<br>" );
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181 /* ... Then the list of tasks and their status... */
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182 vTaskList( cDynamicPage + strlen( cDynamicPage ) );
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184 /* ... Finally the page footer. */
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185 strcat( cDynamicPage, webHTML_END );
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187 /* Write out the dynamically generated page. */
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188 netconn_write( pxNetCon, cDynamicPage, ( u16_t ) strlen( cDynamicPage ), NETCONN_COPY );
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190 netbuf_delete( pxRxBuffer );
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192 netconn_close( pxNetCon );
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195 /*------------------------------------------------------------*/
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197 void vlwIPInit( void )
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199 /* Initialize lwIP and its interface layer. */
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200 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 static struct netif fec523x_if;
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210 extern err_t ethernetif_init(struct netif *netif);
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212 /* Parameters are not used - suppress compiler error. */
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213 ( void )pvParameters;
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217 /* Create and configure the FEC interface. */
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218 IP4_ADDR( &xIpAddr, configIP_ADDR0, configIP_ADDR1, configIP_ADDR2, configIP_ADDR3 );
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219 IP4_ADDR( &xNetMast, configNET_MASK0, configNET_MASK1, configNET_MASK2, configNET_MASK3 );
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220 IP4_ADDR( &xGateway, configGW_ADDR0, configGW_ADDR1, configGW_ADDR2, configGW_ADDR3 );
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221 netif_add( &fec523x_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( &fec523x_if );
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227 netif_set_up( &fec523x_if );
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229 /* 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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