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/***************************************************************************//**
* @file httpd.c
* @brief Simple http server demo application
* COPYRIGHT (C) 2012, RT-Thread Development Team
* @author onelife
* @version 1.0
*******************************************************************************
* @section License
* The license and distribution terms for this file may be found in the file
* LICENSE in this distribution or at http://www.rt-thread.org/license/LICENSE
*******************************************************************************
* @section Change Logs
* Date Author Notes
* 2011-07-04 onelife Derive from Energy Micro demo application
******************************************************************************/
/**************************************************************************//**
* @file
* @brief This file is dervied from the ``httpd.c'' skeleton.
* @author Energy Micro AS
* @@version 0.0.4
******************************************************************************
* @section License
* <b>(C) Copyright 2009 Energy Micro AS, http://www.energymicro.com</b>
******************************************************************************
*
* This source code is the property of Energy Micro AS. The source and compiled
* code may only be used on Energy Micro "EFM32" microcontrollers.
*
* This copyright notice may not be removed from the source code nor changed.
*
* DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Energy Micro AS has no
* obligation to support this Software. Energy Micro AS is providing the
* Software "AS IS", with no express or implied warranties of any kind,
* including, but not limited to, any implied warranties of merchantability
* or fitness for any particular purpose or warranties against infringement
* of any proprietary rights of a third party.
*
* Energy Micro AS will not be liable for any consequential, incidental, or
* special damages, or any other relief, or for any claim by any third party,
* arising from your use of this Software.
*
*****************************************************************************/
/**
* Copyright (c) 2001-2004 Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* This file is part of the lwIP TCP/IP stack.
*
* Author: Adam Dunkels <[email protected]>
*
*/
/***************************************************************************//**
* @addtogroup efm32_eth
* @{
******************************************************************************/
/* Includes ------------------------------------------------------------------*/
#include "rtthread.h"
#include "dev_misc.h"
#if defined(RT_USING_LWIP) && defined(EFM32_USING_ETH_HTTPD)
#include "lwip/tcp.h"
#include "lwip/ip_addr.h"
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* This is the data for the actual web page. */
static int temp, vdd;
static char indexdata[700];
static const char indexdata1[] =
"HTTP/1.0 200 OK\r\n\
Content-type: text/html\r\n\
Pragma: no-cache\r\n\
Refresh: 5\r\n\
\r\n\
<html>\
<head><title>EFM32 HTTPD DEMO</title><head>\
<body>\
<h1>This is a simple http server</h1>\
<br><br><B>Ethernet controller: ENC28J60</B>\
<br><br><B>Refreshing timers: ";
static const char indexdata2[] =
"<br><br><B>Current Vdd: ";
static const char indexdata3[] =
" V</B>\
<br><br><B>Current temperature: ";
static const char indexdata4[] =
" C</B>\
</body>\
</html>";
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/* This is the callback function that is called
* when a TCP segment has arrived in the connection. */
static err_t http_recv(void *arg, struct tcp_pcb *pcb, struct pbuf *p, err_t err)
{
static unsigned char temp_var = 0;
unsigned short counter, i;
char *rq;
/* If we got a NULL pbuf in p, the remote end has closed
* the connection. */
if (p != NULL)
{
/* The payload pointer in the pbuf contains the data
* in the TCP segment. */
rq = p->payload;
/* Check if the request was an HTTP "GET / HTTP/1.1". */
if (rq[0] == 'G' && rq[1] == 'E' && rq[2] == 'T')
{
/* Send the web page to the remote host. A zero
* in the last argument means that the data should
* not be copied into internal buffers. */
counter = 0;
for (i = 0; i < sizeof(indexdata1) - 1; i++)
{
indexdata[counter] = indexdata1[i];
counter++;
}
indexdata[counter] = ' ';
counter++;
/*Copy page counter MSB*/
indexdata[counter] = temp_var / 10 + 0x30;
counter++;
/*Copy page counter LSB*/
indexdata[counter] = temp_var % 10 + 0x30;
counter++;
temp_var++;
if (temp_var > 100) temp_var = 1;
for (i = 0; i < sizeof(indexdata2) - 1; i++)
{
indexdata[counter] = indexdata2[i];
counter++;
}
vdd = rt_hw_get_vdd();
rt_sprintf(&indexdata[counter], "%1d.%02d", vdd / 100, vdd % 100);
counter += 4;
for (i = 0; i < sizeof(indexdata3) - 1; i++)
{
indexdata[counter] = indexdata3[i];
counter++;
}
temp = rt_hw_get_temp();
/*Set temperature sign*/
if (temp < 0)
{
indexdata[counter] = '-';
counter++;
}
rt_sprintf(&indexdata[counter], "%02d.%02d\n", temp / 100, temp % 100);
counter += 5;
for (i = 0; i < sizeof(indexdata4); i++)
{
indexdata[counter] = indexdata4[i];
counter++;
}
tcp_write(pcb, indexdata, counter, 1);
}
/* Free the pbuf. */
pbuf_free(p);
}
/* Close the connection. */
tcp_close(pcb);
return ERR_OK;
}
/* This is the callback function that is called when
* a connection has been accepted. */
static err_t http_accept(void *arg, struct tcp_pcb *pcb, err_t err)
{
/* Set up the function http_recv() to be called when data
* arrives. */
tcp_recv(pcb, http_recv);
return ERR_OK;
}
/* The initialization function. */
void httpd_init(void)
{
struct tcp_pcb *pcb;
/* Create a new TCP PCB. */
pcb = tcp_new();
/* Bind the PCB to TCP port 80. */
tcp_bind(pcb, NULL, 80);
/* Change TCP state to LISTEN. */
pcb = tcp_listen(pcb);
/* Set up http_accet() function to be called
* when a new connection arrives. */
tcp_accept(pcb, http_accept);
}
#endif /* defined(RT_USING_LWIP) && defined(EFM32_USING_ETH_HTTPD) */
/***************************************************************************//**
* @}
******************************************************************************/
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