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https://github.com/FreeRTOS/FreeRTOS-Kernel.git
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The line 'Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.'
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214 lines
6.4 KiB
C
214 lines
6.4 KiB
C
/*
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* FreeRTOS V202212.00
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* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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* the Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* https://www.FreeRTOS.org
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* https://github.com/FreeRTOS
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*
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*/
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/*
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Implements a simplistic WEB server. Every time a connection is made and
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data is received a dynamic page that shows the current TCP/IP statistics
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is generated and returned. The connection is then closed.
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This file was adapted from a FreeRTOS lwIP slip demo supplied by a third
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party.
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*/
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/*
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Changes from V3.2.2
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+ Changed the page returned by the lwIP WEB server demo to display the
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task status table rather than the TCP/IP statistics.
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*/
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/* Standard includes. */
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#include <stdio.h>
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#include <string.h>
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/* Scheduler 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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/* Demo includes. */
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#include "BasicWEB.h"
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#include "SAM7_EMAC.h"
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/* lwIP includes. */
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#include "lwip/api.h"
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#include "lwip/tcpip.h"
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#include "lwip/memp.h"
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#include "lwip/stats.h"
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#include "netif/loopif.h"
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/* The size of the buffer in which the dynamic WEB page is created. */
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#define webMAX_PAGE_SIZE 2048
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/* Standard GET response. */
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#define webHTTP_OK "HTTP/1.0 200 OK\r\nContent-type: text/html\r\n\r\n"
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/* The port on which we listen. */
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#define webHTTP_PORT ( 80 )
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/* Delay on close error. */
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#define webSHORT_DELAY ( 10 )
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/* Format of the dynamic page that is returned on each connection. */
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#define webHTML_START \
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"<html>\
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<head>\
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</head>\
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<BODY onLoad=\"window.setTimeout("location.href='index.html'",1000)\"bgcolor=\"#CCCCff\">\
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\r\nPage Hits = "
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#define webHTML_END \
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"\r\n</pre>\
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\r\n</BODY>\
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</html>"
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/*------------------------------------------------------------*/
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/*
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* Process an incoming connection on port 80.
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*
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* This simply checks to see if the incoming data contains a GET request, and
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* if so sends back a single dynamically created page. The connection is then
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* closed. A more complete implementation could create a task for each
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* connection.
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*/
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static void vProcessConnection( struct netconn *pxNetCon );
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/*------------------------------------------------------------*/
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static void vProcessConnection( struct netconn *pxNetCon )
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{
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static char cDynamicPage[ webMAX_PAGE_SIZE ], cPageHits[ 11 ];
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struct netbuf *pxRxBuffer;
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char *pcRxString;
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unsigned short usLength;
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static unsigned long ulPageHits = 0;
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/* We expect to immediately get data. */
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pxRxBuffer = netconn_recv( pxNetCon );
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if( pxRxBuffer != NULL )
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{
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/* Where is the data? */
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netbuf_data( pxRxBuffer, ( void * ) &pcRxString, &usLength );
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/* Is this a GET? We don't handle anything else. */
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if( !strncmp( pcRxString, "GET", 3 ) )
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{
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pcRxString = cDynamicPage;
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/* Update the hit count. */
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ulPageHits++;
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sprintf( cPageHits, "%lu", ulPageHits );
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/* Write out the HTTP OK header. */
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netconn_write(pxNetCon, webHTTP_OK, (u16_t)strlen( webHTTP_OK ), NETCONN_COPY );
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/* Generate the dynamic page...
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... First the page header. */
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strcpy( cDynamicPage, webHTML_START );
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/* ... Then the hit count... */
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strcat( cDynamicPage, cPageHits );
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strcat( cDynamicPage, "<p><pre>Task State Priority Stack #<br>************************************************<br>" );
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/* ... Then the list of tasks and their status... */
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vTaskList( cDynamicPage + strlen( cDynamicPage ) );
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/* ... Finally the page footer. */
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strcat( cDynamicPage, webHTML_END );
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/* Write out the dynamically generated page. */
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netconn_write(pxNetCon, cDynamicPage, (u16_t)strlen( cDynamicPage ), NETCONN_COPY );
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}
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netbuf_delete( pxRxBuffer );
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}
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netconn_close( pxNetCon );
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}
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/*------------------------------------------------------------*/
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void vlwIPInit( void )
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{
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/* Initialize lwIP and its interface layer. */
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sys_init();
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mem_init();
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memp_init();
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pbuf_init();
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netif_init();
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ip_init();
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tcpip_init( NULL, NULL );
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}
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/*------------------------------------------------------------*/
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void vBasicWEBServer( void *pvParameters )
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{
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struct netconn *pxHTTPListener, *pxNewConnection;
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struct ip_addr xIpAddr, xNetMast, xGateway;
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extern err_t ethernetif_init( struct netif *netif );
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static struct netif EMAC_if;
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/* Parameters are not used - suppress compiler error. */
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( void ) pvParameters;
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/* Create and configure the EMAC interface. */
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IP4_ADDR(&xIpAddr,emacIPADDR0,emacIPADDR1,emacIPADDR2,emacIPADDR3);
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IP4_ADDR(&xNetMast,emacNET_MASK0,emacNET_MASK1,emacNET_MASK2,emacNET_MASK3);
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IP4_ADDR(&xGateway,emacGATEWAY_ADDR0,emacGATEWAY_ADDR1,emacGATEWAY_ADDR2,emacGATEWAY_ADDR3);
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netif_add(&EMAC_if, &xIpAddr, &xNetMast, &xGateway, NULL, ethernetif_init, tcpip_input);
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/* make it the default interface */
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netif_set_default(&EMAC_if);
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/* bring it up */
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netif_set_up(&EMAC_if);
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/* Create a new tcp connection handle */
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pxHTTPListener = netconn_new( NETCONN_TCP );
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netconn_bind(pxHTTPListener, NULL, webHTTP_PORT );
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netconn_listen( pxHTTPListener );
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/* Loop forever */
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for( ;; )
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{
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/* Wait for connection. */
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pxNewConnection = netconn_accept(pxHTTPListener);
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if(pxNewConnection != NULL)
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{
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/* Service connection. */
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vProcessConnection( pxNewConnection );
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while( netconn_delete( pxNewConnection ) != ERR_OK )
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{
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vTaskDelay( webSHORT_DELAY );
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}
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}
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}
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}
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