You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
224 lines
6.8 KiB
C
224 lines
6.8 KiB
C
/*
|
|
FreeRTOS.org V4.5.0 - Copyright (C) 2003-2007 Richard Barry.
|
|
|
|
This file is part of the FreeRTOS.org distribution.
|
|
|
|
FreeRTOS.org is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
FreeRTOS.org is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with FreeRTOS.org; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
|
A special exception to the GPL can be applied should you wish to distribute
|
|
a combined work that includes FreeRTOS.org, without being obliged to provide
|
|
the source code for any proprietary components. See the licensing section
|
|
of http://www.FreeRTOS.org for full details of how and when the exception
|
|
can be applied.
|
|
|
|
***************************************************************************
|
|
See http://www.FreeRTOS.org for documentation, latest information, license
|
|
and contact details. Please ensure to read the configuration and relevant
|
|
port sections of the online documentation.
|
|
|
|
Also see http://www.SafeRTOS.com for an IEC 61508 compliant version along
|
|
with commercial development and support options.
|
|
***************************************************************************
|
|
*/
|
|
|
|
/*
|
|
Implements a simplistic WEB server. Every time a connection is made and
|
|
data is received a dynamic page that shows the current TCP/IP statistics
|
|
is generated and returned. The connection is then closed.
|
|
|
|
This file was adapted from a FreeRTOS lwIP slip demo supplied by a third
|
|
party.
|
|
*/
|
|
|
|
/*
|
|
Changes from V3.2.2
|
|
|
|
+ Changed the page returned by the lwIP WEB server demo to display the
|
|
task status table rather than the TCP/IP statistics.
|
|
*/
|
|
|
|
|
|
/* Standard includes. */
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
/* Scheduler includes. */
|
|
#include "FreeRTOS.h"
|
|
#include "task.h"
|
|
#include "semphr.h"
|
|
|
|
/* Demo includes. */
|
|
#include "BasicWEB.h"
|
|
#include "SAM7_EMAC.h"
|
|
|
|
/* lwIP includes. */
|
|
#include "lwip/api.h"
|
|
#include "lwip/tcpip.h"
|
|
#include "lwip/memp.h"
|
|
#include "lwip/stats.h"
|
|
#include "netif/loopif.h"
|
|
|
|
/* The size of the buffer in which the dynamic WEB page is created. */
|
|
#define webMAX_PAGE_SIZE 2048
|
|
|
|
/* Standard GET response. */
|
|
#define webHTTP_OK "HTTP/1.0 200 OK\r\nContent-type: text/html\r\n\r\n"
|
|
|
|
/* The port on which we listen. */
|
|
#define webHTTP_PORT ( 80 )
|
|
|
|
/* Delay on close error. */
|
|
#define webSHORT_DELAY ( 10 )
|
|
|
|
/* Format of the dynamic page that is returned on each connection. */
|
|
#define webHTML_START \
|
|
"<html>\
|
|
<head>\
|
|
</head>\
|
|
<BODY onLoad=\"window.setTimeout("location.href='index.html'",1000)\"bgcolor=\"#CCCCff\">\
|
|
\r\nPage Hits = "
|
|
|
|
#define webHTML_END \
|
|
"\r\n</pre>\
|
|
\r\n</BODY>\
|
|
</html>"
|
|
|
|
/*------------------------------------------------------------*/
|
|
|
|
/*
|
|
* Process an incoming connection on port 80.
|
|
*
|
|
* This simply checks to see if the incoming data contains a GET request, and
|
|
* if so sends back a single dynamically created page. The connection is then
|
|
* closed. A more complete implementation could create a task for each
|
|
* connection.
|
|
*/
|
|
static void vProcessConnection( struct netconn *pxNetCon );
|
|
|
|
/*------------------------------------------------------------*/
|
|
|
|
static void vProcessConnection( struct netconn *pxNetCon )
|
|
{
|
|
static portCHAR cDynamicPage[ webMAX_PAGE_SIZE ], cPageHits[ 11 ];
|
|
struct netbuf *pxRxBuffer;
|
|
portCHAR *pcRxString;
|
|
unsigned portSHORT usLength;
|
|
static unsigned portLONG ulPageHits = 0;
|
|
|
|
/* We expect to immediately get data. */
|
|
pxRxBuffer = netconn_recv( pxNetCon );
|
|
|
|
if( pxRxBuffer != NULL )
|
|
{
|
|
/* Where is the data? */
|
|
netbuf_data( pxRxBuffer, ( void * ) &pcRxString, &usLength );
|
|
|
|
/* Is this a GET? We don't handle anything else. */
|
|
if( !strncmp( pcRxString, "GET", 3 ) )
|
|
{
|
|
pcRxString = cDynamicPage;
|
|
|
|
/* Update the hit count. */
|
|
ulPageHits++;
|
|
sprintf( cPageHits, "%lu", ulPageHits );
|
|
|
|
/* Write out the HTTP OK header. */
|
|
netconn_write(pxNetCon, webHTTP_OK, (u16_t)strlen( webHTTP_OK ), NETCONN_COPY );
|
|
|
|
/* Generate the dynamic page...
|
|
|
|
... First the page header. */
|
|
strcpy( cDynamicPage, webHTML_START );
|
|
/* ... Then the hit count... */
|
|
strcat( cDynamicPage, cPageHits );
|
|
strcat( cDynamicPage, "<p><pre>Task State Priority Stack #<br>************************************************<br>" );
|
|
/* ... Then the list of tasks and their status... */
|
|
vTaskList( ( signed portCHAR * ) cDynamicPage + strlen( cDynamicPage ) );
|
|
/* ... Finally the page footer. */
|
|
strcat( cDynamicPage, webHTML_END );
|
|
|
|
/* Write out the dynamically generated page. */
|
|
netconn_write(pxNetCon, cDynamicPage, (u16_t)strlen( cDynamicPage ), NETCONN_COPY );
|
|
}
|
|
|
|
netbuf_delete( pxRxBuffer );
|
|
}
|
|
|
|
netconn_close( pxNetCon );
|
|
}
|
|
/*------------------------------------------------------------*/
|
|
|
|
void vlwIPInit( void )
|
|
{
|
|
/* Initialize lwIP and its interface layer. */
|
|
sys_init();
|
|
mem_init();
|
|
memp_init();
|
|
pbuf_init();
|
|
netif_init();
|
|
ip_init();
|
|
tcpip_init( NULL, NULL );
|
|
}
|
|
/*------------------------------------------------------------*/
|
|
|
|
void vBasicWEBServer( void *pvParameters )
|
|
{
|
|
struct netconn *pxHTTPListener, *pxNewConnection;
|
|
struct ip_addr xIpAddr, xNetMast, xGateway;
|
|
extern err_t ethernetif_init( struct netif *netif );
|
|
static struct netif EMAC_if;
|
|
|
|
/* Parameters are not used - suppress compiler error. */
|
|
( void ) pvParameters;
|
|
|
|
|
|
/* Create and configure the EMAC interface. */
|
|
IP4_ADDR(&xIpAddr,emacIPADDR0,emacIPADDR1,emacIPADDR2,emacIPADDR3);
|
|
IP4_ADDR(&xNetMast,emacNET_MASK0,emacNET_MASK1,emacNET_MASK2,emacNET_MASK3);
|
|
IP4_ADDR(&xGateway,emacGATEWAY_ADDR0,emacGATEWAY_ADDR1,emacGATEWAY_ADDR2,emacGATEWAY_ADDR3);
|
|
netif_add(&EMAC_if, &xIpAddr, &xNetMast, &xGateway, NULL, ethernetif_init, tcpip_input);
|
|
|
|
/* make it the default interface */
|
|
netif_set_default(&EMAC_if);
|
|
|
|
/* bring it up */
|
|
netif_set_up(&EMAC_if);
|
|
|
|
/* Create a new tcp connection handle */
|
|
|
|
pxHTTPListener = netconn_new( NETCONN_TCP );
|
|
netconn_bind(pxHTTPListener, NULL, webHTTP_PORT );
|
|
netconn_listen( pxHTTPListener );
|
|
|
|
/* Loop forever */
|
|
for( ;; )
|
|
{
|
|
/* Wait for connection. */
|
|
pxNewConnection = netconn_accept(pxHTTPListener);
|
|
|
|
if(pxNewConnection != NULL)
|
|
{
|
|
/* Service connection. */
|
|
vProcessConnection( pxNewConnection );
|
|
while( netconn_delete( pxNewConnection ) != ERR_OK )
|
|
{
|
|
vTaskDelay( webSHORT_DELAY );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|