/* | |
* FreeRTOS Kernel V10.1.1 | |
* Copyright (C) 2018 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 <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 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, "<p><pre>Task State Priority Stack #<br>************************************************<br>" ); | |
/* ... 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 ); | |
} | |
} | |
} | |
} | |