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New Demo files for Tern E-Engine controller port.
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Richard Barry
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289
Demo/WizNET_DEMO_TERN_186/HTTPTask.c
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Demo/WizNET_DEMO_TERN_186/HTTPTask.c
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/*
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FreeRTOS V4.0.1 - Copyright (C) 2003-2006 Richard Barry.
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This file is part of the FreeRTOS distribution.
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FreeRTOS is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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FreeRTOS is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with FreeRTOS; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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A special exception to the GPL can be applied should you wish to distribute
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a combined work that includes FreeRTOS, without being obliged to provide
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the source code for any proprietary components. See the licensing section
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of http://www.FreeRTOS.org for full details of how and when the exception
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can be applied.
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***************************************************************************
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See http://www.FreeRTOS.org for documentation, latest information, license
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and contact details. Please ensure to read the configuration and relevant
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port sections of the online documentation.
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***************************************************************************
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*/
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/*
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* Very simple task that responds with a single WEB page to http requests.
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*
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* The WEB page displays task and system status. A semaphore is used to
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* wake the task when there is processing to perform as determined by the
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* interrupts generated by the Ethernet interface.
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*/
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/* Standard includes. */
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#include <string.h>
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#include <stdio.h>
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/* Tern includes. */
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#include "utils\system_common.h"
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#include "i2chip_hw.h"
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#include "socket.h"
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/* FreeRTOS.org includes. */
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#include <FreeRTOS.h>
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#include <task.h>
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#include <semphr.h>
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/* The standard http port on which we are going to listen. */
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#define httpPORT 80
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#define httpTX_WAIT 2
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/* Network address configuration. */
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const unsigned portCHAR ucMacAddress[] = { 12, 128, 12, 34, 56, 78 };
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const unsigned portCHAR ucGatewayAddress[] = { 192, 168, 2, 1 };
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const unsigned portCHAR ucIPAddress[] = { 172, 25, 218, 210 };
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const unsigned portCHAR ucSubnetMask[] = { 255, 255, 255, 0 };
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/* The number of sockets this task is going to handle. */
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#define httpSOCKET_NUM 3
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unsigned portCHAR ucConnection[ httpSOCKET_NUM ];
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/* The maximum data buffer size we can handle. */
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#define httpSOCKET_BUFFER_SIZE 2048
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/* Standard HTTP response. */
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#define httpOUTPUT_OK "HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n"
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/* Hard coded HTML components. Other data is generated dynamically. */
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#define HTML_OUTPUT_BEGIN "\
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<HTML><head><meta http-equiv=\"Refresh\" content=\"1\;url=index.htm\"></head>\
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<BODY bgcolor=\"#CCCCFF\"><font face=\"arial\"><H2>FreeRTOS.org<sup>tm</sup> + Tern E-Engine<sup>tm</sup></H2>\
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<a href=\"http:\/\/www.FreeRTOS.org\">FreeRTOS.org Homepage</a><P>\
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<HR>Task status table:\r\n\
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<p><font face=\"courier\"><pre>Task State Priority Stack #<br>\
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************************************************<br>"
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#define HTML_OUTPUT_END "\
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</font></BODY></HTML>"
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/*-----------------------------------------------------------*/
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/*
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* Initialise the data structures used to hold the socket status.
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*/
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static void prvHTTPInit( void );
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/*
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* Setup the Ethernet interface with the network addressing information.
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*/
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static void prvNetifInit( void );
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/*
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* Generate the dynamic components of the served WEB page and transmit the
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* entire page through the socket.
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*/
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static void prvTransmitHTTP( unsigned portCHAR socket );
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/*-----------------------------------------------------------*/
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/* This variable is simply incremented by the idle task hook so the number of
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iterations the idle task has performed can be displayed as part of the served
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page. */
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unsigned portLONG ulIdleLoops = 0UL;
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/* Data buffer shared by sockets. */
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unsigned portCHAR ucSocketBuffer[ httpSOCKET_BUFFER_SIZE ];
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/* The semaphore used by the Ethernet ISR to signal that the task should wake
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and process whatever caused the interrupt. */
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xSemaphoreHandle xTCPSemaphore = NULL;
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/*-----------------------------------------------------------*/
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void vHTTPTask( void * pvParameters )
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{
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portSHORT i, sLen;
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unsigned portCHAR ucState;
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( void ) pvParameters;
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/* Create the semaphore used to communicate between this task and the
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WIZnet ISR. */
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vSemaphoreCreateBinary( xTCPSemaphore );
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/* Make sure everything is setup before we start. */
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prvNetifInit();
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prvHTTPInit();
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for( ;; )
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{
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/* Wait until the ISR tells us there is something to do. */
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xSemaphoreTake( xTCPSemaphore, portMAX_DELAY );
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/* Check each socket. */
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for( i = 0; i < httpSOCKET_NUM; i++ )
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{
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ucState = select( i, SEL_CONTROL );
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switch (ucState)
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{
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case SOCK_ESTABLISHED : /* new connection established. */
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if( ( sLen = select( i, SEL_RECV ) ) > 0 )
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{
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if( sLen > httpSOCKET_BUFFER_SIZE )
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{
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sLen = httpSOCKET_BUFFER_SIZE;
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}
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disable();
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sLen = recv( i, ucSocketBuffer, sLen );
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if( ucConnection[ i ] == 1 )
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{
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/* This is our first time processing a HTTP
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request on this connection. */
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prvTransmitHTTP( i );
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ucConnection[i] = 0;
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}
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enable();
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}
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break;
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case SOCK_CLOSE_WAIT :
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close(i);
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break;
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case SOCK_CLOSED :
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ucConnection[i] = 1;
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socket( i, SOCK_STREAM, 80, 0x00 );
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NBlisten( i ); /* reinitialize socket. */
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break;
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}
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}
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}
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}
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/*-----------------------------------------------------------*/
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static void prvHTTPInit( void )
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{
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unsigned portCHAR ucIndex;
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/* There are 4 total sockets available; we will claim 3 for HTTP. */
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for(ucIndex = 0; ucIndex < httpSOCKET_NUM; ucIndex++)
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{
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socket( ucIndex, SOCK_STREAM, httpPORT, 0x00 );
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NBlisten( ucIndex );
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ucConnection[ ucIndex ] = 1;
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}
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}
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/*-----------------------------------------------------------*/
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static void prvNetifInit( void )
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{
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i2chip_init();
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initW3100A();
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setMACAddr( ( unsigned portCHAR * ) ucMacAddress );
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setgateway( ( unsigned portCHAR * ) ucGatewayAddress );
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setsubmask( ( unsigned portCHAR * ) ucSubnetMask );
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setIP( ( unsigned portCHAR * ) ucIPAddress );
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/* See definition of 'sysinit' in socket.c
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- 8 KB transmit buffer, and 8 KB receive buffer available. These buffers
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are shared by all 4 channels.
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- (0x55, 0x55) configures the send and receive buffers at
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httpSOCKET_BUFFER_SIZE bytes for each of the 4 channels. */
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sysinit( 0x55, 0x55 );
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}
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/*-----------------------------------------------------------*/
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static void prvTransmitHTTP(unsigned portCHAR socket)
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{
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extern portSHORT usCheckStatus;
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/* Send the http and html headers. */
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send( socket, ( unsigned portCHAR * ) httpOUTPUT_OK, strlen( httpOUTPUT_OK ) );
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send( socket, ( unsigned portCHAR * ) HTML_OUTPUT_BEGIN, strlen( HTML_OUTPUT_BEGIN ) );
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/* Generate then send the table showing the status of each task. */
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vTaskList( ucSocketBuffer );
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send( socket, ( unsigned portCHAR * ) ucSocketBuffer, strlen( ucSocketBuffer ) );
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/* Send the number of times the idle task has looped. */
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sprintf( ucSocketBuffer, "</pre></font><p><br>The idle task has looped 0x%08lx times<br>", ulIdleLoops );
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send( socket, ( unsigned portCHAR * ) ucSocketBuffer, strlen( ucSocketBuffer ) );
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/* Send the tick count. */
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sprintf( ucSocketBuffer, "The tick count is 0x%08lx<br>", xTaskGetTickCount() );
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send( socket, ( unsigned portCHAR * ) ucSocketBuffer, strlen( ucSocketBuffer ) );
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/* Show a message indicating whether or not the check task has discovered
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an error in any of the standard demo tasks. */
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if( usCheckStatus == 0 )
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{
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sprintf( ucSocketBuffer, "No errors detected." );
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send( socket, ( unsigned portCHAR * ) ucSocketBuffer, strlen( ucSocketBuffer ) );
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}
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else
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{
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sprintf( ucSocketBuffer, "<font color=\"red\">An error has been detected in at least one task %x.</font><p>", usCheckStatus );
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send( socket, ( unsigned portCHAR * ) ucSocketBuffer, strlen( ucSocketBuffer ) );
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}
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/* Finish the page off. */
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send( socket, (unsigned portCHAR*)HTML_OUTPUT_END, strlen(HTML_OUTPUT_END));
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/* Must make sure the data is gone before closing the socket. */
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while( !tx_empty( socket ) )
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{
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vTaskDelay( httpTX_WAIT );
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}
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close(socket);
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}
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/*-----------------------------------------------------------*/
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void vApplicationIdleHook( void )
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{
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ulIdleLoops++;
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}
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