/* * FreeRTOS Kernel V10.0.1 * Copyright (C) 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a copy of * this software and associated documentation files (the "Software"), to deal in * the Software without restriction, including without limitation the rights to * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of * the Software, and to permit persons to whom the Software is furnished to do so, * subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * * http://www.FreeRTOS.org * http://aws.amazon.com/freertos * * 1 tab == 4 spaces! */ /* 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 #include /* 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 \ "\ \ \ \ \r\nPage Hits = " #define webHTML_END \ "\r\n\ \r\n\ " /*------------------------------------------------------------*/ /* * 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 char cDynamicPage[ webMAX_PAGE_SIZE ], cPageHits[ 11 ]; struct netbuf *pxRxBuffer; char *pcRxString; unsigned short usLength; static unsigned long 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, "

Task          State  Priority  Stack	#
************************************************
" );
			/* ... Then the list of tasks and their status... */
			vTaskList( 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 );
			}
		}
	}
}