2 FreeRTOS V9.0.0rc2 - Copyright (C) 2016 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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82 + Changed the page returned by the lwIP WEB server demo to display the
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83 task status table rather than the TCP/IP statistics.
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87 /* Standard includes. */
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91 /* Scheduler includes. */
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92 #include "FreeRTOS.h"
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96 /* Demo includes. */
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97 #include "BasicWEB.h"
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98 #include "SAM7_EMAC.h"
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100 /* lwIP includes. */
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101 #include "lwip/api.h"
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102 #include "lwip/tcpip.h"
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103 #include "lwip/memp.h"
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104 #include "lwip/stats.h"
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105 #include "netif/loopif.h"
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107 /* The size of the buffer in which the dynamic WEB page is created. */
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108 #define webMAX_PAGE_SIZE 2048
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110 /* Standard GET response. */
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111 #define webHTTP_OK "HTTP/1.0 200 OK\r\nContent-type: text/html\r\n\r\n"
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113 /* The port on which we listen. */
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114 #define webHTTP_PORT ( 80 )
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116 /* Delay on close error. */
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117 #define webSHORT_DELAY ( 10 )
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119 /* Format of the dynamic page that is returned on each connection. */
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120 #define webHTML_START \
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124 <BODY onLoad=\"window.setTimeout("location.href='index.html'",1000)\"bgcolor=\"#CCCCff\">\
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127 #define webHTML_END \
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132 /*------------------------------------------------------------*/
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135 * Process an incoming connection on port 80.
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137 * This simply checks to see if the incoming data contains a GET request, and
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138 * if so sends back a single dynamically created page. The connection is then
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139 * closed. A more complete implementation could create a task for each
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142 static void vProcessConnection( struct netconn *pxNetCon );
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144 /*------------------------------------------------------------*/
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146 static void vProcessConnection( struct netconn *pxNetCon )
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148 static char cDynamicPage[ webMAX_PAGE_SIZE ], cPageHits[ 11 ];
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149 struct netbuf *pxRxBuffer;
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151 unsigned short usLength;
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152 static unsigned long ulPageHits = 0;
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154 /* We expect to immediately get data. */
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155 pxRxBuffer = netconn_recv( pxNetCon );
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157 if( pxRxBuffer != NULL )
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159 /* Where is the data? */
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160 netbuf_data( pxRxBuffer, ( void * ) &pcRxString, &usLength );
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162 /* Is this a GET? We don't handle anything else. */
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163 if( !strncmp( pcRxString, "GET", 3 ) )
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165 pcRxString = cDynamicPage;
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167 /* Update the hit count. */
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169 sprintf( cPageHits, "%lu", ulPageHits );
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171 /* Write out the HTTP OK header. */
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172 netconn_write(pxNetCon, webHTTP_OK, (u16_t)strlen( webHTTP_OK ), NETCONN_COPY );
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174 /* Generate the dynamic page...
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176 ... First the page header. */
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177 strcpy( cDynamicPage, webHTML_START );
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178 /* ... Then the hit count... */
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179 strcat( cDynamicPage, cPageHits );
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180 strcat( cDynamicPage, "<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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183 /* ... Finally the page footer. */
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184 strcat( cDynamicPage, webHTML_END );
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186 /* Write out the dynamically generated page. */
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187 netconn_write(pxNetCon, cDynamicPage, (u16_t)strlen( cDynamicPage ), NETCONN_COPY );
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190 netbuf_delete( pxRxBuffer );
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193 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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206 tcpip_init( NULL, NULL );
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208 /*------------------------------------------------------------*/
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210 void vBasicWEBServer( void *pvParameters )
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212 struct netconn *pxHTTPListener, *pxNewConnection;
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213 struct ip_addr xIpAddr, xNetMast, xGateway;
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214 extern err_t ethernetif_init( struct netif *netif );
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215 static struct netif EMAC_if;
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217 /* Parameters are not used - suppress compiler error. */
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218 ( void ) pvParameters;
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221 /* Create and configure the EMAC interface. */
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222 IP4_ADDR(&xIpAddr,emacIPADDR0,emacIPADDR1,emacIPADDR2,emacIPADDR3);
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223 IP4_ADDR(&xNetMast,emacNET_MASK0,emacNET_MASK1,emacNET_MASK2,emacNET_MASK3);
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224 IP4_ADDR(&xGateway,emacGATEWAY_ADDR0,emacGATEWAY_ADDR1,emacGATEWAY_ADDR2,emacGATEWAY_ADDR3);
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225 netif_add(&EMAC_if, &xIpAddr, &xNetMast, &xGateway, NULL, ethernetif_init, tcpip_input);
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227 /* make it the default interface */
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228 netif_set_default(&EMAC_if);
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231 netif_set_up(&EMAC_if);
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233 /* Create a new tcp connection handle */
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235 pxHTTPListener = netconn_new( NETCONN_TCP );
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236 netconn_bind(pxHTTPListener, NULL, webHTTP_PORT );
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237 netconn_listen( pxHTTPListener );
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242 /* Wait for connection. */
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243 pxNewConnection = netconn_accept(pxHTTPListener);
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245 if(pxNewConnection != NULL)
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247 /* Service connection. */
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248 vProcessConnection( pxNewConnection );
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249 while( netconn_delete( pxNewConnection ) != ERR_OK )
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251 vTaskDelay( webSHORT_DELAY );
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