Frank 26080115 / LPC1700CMSIS_Examples

These are the examples provided for [[/users/frank26080115/libraries/LPC1700CMSIS_Lib/]] Note, the entire "program" is not compilable!

EMAC/Easy_Web/easyweb.c@0:bf7b9fba3924, 2011-03-20 (annotated)

Committer:
frank26080115
Date:
Sun Mar 20 05:38:56 2011 +0000
Revision:
0:bf7b9fba3924

        

        
Who changed what in which revision?

        

            
                
UserRevisionLine numberNew contents of line

            
            


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/******************************************************************





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 *****                                                        *****





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 *****  Name: easyweb.c                                       *****





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 *****  Ver.: 1.0                                             *****





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 *****  Date: 07/05/2001                                      *****





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 *****  Auth: Andreas Dannenberg                              *****





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 *****        HTWK Leipzig                                    *****





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 *****        university of applied sciences                  *****





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 *****        Germany                                         *****





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 *****  Func: implements a dynamic HTTP-server by using       *****





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 *****        the easyWEB-API                                 *****





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 *****                                                        *****





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 ******************************************************************/





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#include <stdlib.h>





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#include <stdio.h>





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#include <string.h>





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#include "adc.h"





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#include "lpc17xx_libcfg.h"





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#include "EMAC.h"         // Keil: *.c -> *.h    // ethernet packet driver





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#define extern            // Keil: Line added for modular project management





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#include "easyweb.h"





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#include "tcpip.h"        // Keil: *.c -> *.h    // easyWEB TCP/IP stack





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#include "webpage.h"                             // webside for our HTTP server (HTML)





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/* Example group ----------------------------------------------------------- */





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/** @defgroup EMAC_Easy_Web	Easy_Web





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 * @ingroup EMAC_Examples





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 * @{





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 */





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// NXP: Include some header files that differs from the origin





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int main(void)





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{





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  TCPLowLevelInit();





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  HTTPStatus = 0;                                // clear HTTP-server's flag register





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  TCPLocalPort = TCP_PORT_HTTP;                  // set port we want to listen to





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  while (1)                                      // repeat forever





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  {





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    if (!(SocketStatus & SOCK_ACTIVE)) TCPPassiveOpen();   // listen for incoming TCP-connection





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    DoNetworkStuff();                                      // handle network and easyWEB-stack





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                                                           // events





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    HTTPServer();





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  }





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}





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// This function implements a very simple dynamic HTTP-server.





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// It waits until connected, then sends a HTTP-header and the





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// HTML-code stored in memory. Before sending, it replaces





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// some special strings with dynamic values.





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// NOTE: For strings crossing page boundaries, replacing will





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// not work. In this case, simply add some extra lines





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// (e.g. CR and LFs) to the HTML-code.





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void HTTPServer(void)





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{





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  if (SocketStatus & SOCK_CONNECTED)             // check if somebody has connected to our TCP





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  {





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    if (SocketStatus & SOCK_DATA_AVAILABLE)      // check if remote TCP sent data





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      TCPReleaseRxBuffer();                      // and throw it away





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    if (SocketStatus & SOCK_TX_BUF_RELEASED)     // check if buffer is free for TX





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    {





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      if (!(HTTPStatus & HTTP_SEND_PAGE))        // init byte-counter and pointer to webside





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      {                                          // if called the 1st time





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        HTTPBytesToSend = sizeof(WebSide) - 1;   // get HTML length, ignore trailing zero





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        PWebSide = (unsigned char *)WebSide;     // pointer to HTML-code





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      }





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      if (HTTPBytesToSend > MAX_TCP_TX_DATA_SIZE)     // transmit a segment of MAX_SIZE





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      {





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        if (!(HTTPStatus & HTTP_SEND_PAGE))           // 1st time, include HTTP-header





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        {





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          memcpy(TCP_TX_BUF, GetResponse, sizeof(GetResponse) - 1);





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          memcpy(TCP_TX_BUF + sizeof(GetResponse) - 1, PWebSide, MAX_TCP_TX_DATA_SIZE - sizeof(GetResponse) + 1);





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          HTTPBytesToSend -= MAX_TCP_TX_DATA_SIZE - sizeof(GetResponse) + 1;





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          PWebSide += MAX_TCP_TX_DATA_SIZE - sizeof(GetResponse) + 1;





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        }





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        else





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        {





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          memcpy(TCP_TX_BUF, PWebSide, MAX_TCP_TX_DATA_SIZE);





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          HTTPBytesToSend -= MAX_TCP_TX_DATA_SIZE;





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          PWebSide += MAX_TCP_TX_DATA_SIZE;





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        }





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        TCPTxDataCount = MAX_TCP_TX_DATA_SIZE;   // bytes to xfer





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        InsertDynamicValues();                   // exchange some strings...





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        TCPTransmitTxBuffer();                   // xfer buffer





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      }





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      else if (HTTPBytesToSend)                  // transmit leftover bytes





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      {





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        memcpy(TCP_TX_BUF, PWebSide, HTTPBytesToSend);





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        TCPTxDataCount = HTTPBytesToSend;        // bytes to xfer





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        InsertDynamicValues();                   // exchange some strings...





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        TCPTransmitTxBuffer();                   // send last segment





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        TCPClose();                              // and close connection





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        HTTPBytesToSend = 0;                     // all data sent





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      }





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      HTTPStatus |= HTTP_SEND_PAGE;              // ok, 1st loop executed





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    }





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  }





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  else





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    HTTPStatus &= ~HTTP_SEND_PAGE;               // reset help-flag if not connected





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}





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// samples and returns the AD-converter value of channel 2 (MCB1700 board) or channel 5 (IAR board)





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unsigned int GetAD7Val(void)





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{





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	unsigned int val;





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	ADC_startCnv();





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	val = ADC_getCnv();





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	ADC_stopCnv();





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	return (val/40);





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}





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// samples and returns AD-converter value of channel 1





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unsigned int GetTempVal(void)





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{





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	// Always return (0)





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	return (0);





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}





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// searches the TX-buffer for special strings and replaces them





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// with dynamic values (AD-converter results)





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void InsertDynamicValues(void)





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{





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  unsigned char *Key;





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           char NewKey[5];





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  unsigned int i;





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  if (TCPTxDataCount < 4) return;                     // there can't be any special string





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  Key = TCP_TX_BUF;





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  for (i = 0; i < (TCPTxDataCount - 3); i++)





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  {





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    if (*Key == 'A')





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     if (*(Key + 1) == 'D')





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       if (*(Key + 3) == '%')





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         switch (*(Key + 2))





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         {





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           case '7' :                                 // "AD7%"?





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           {





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             sprintf(NewKey, "%3u", GetAD7Val());     // insert AD converter value





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             memcpy(Key, NewKey, 3);                  // channel 7 (P6.7)





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             break;





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           }





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           case 'A' :                                 // "ADA%"?





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           {





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             sprintf(NewKey, "%3u", GetTempVal());    // insert AD converter value





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             memcpy(Key, NewKey, 3);                  // channel 10 (temp.-diode)





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             break;





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           }





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         }





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    Key++;





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  }





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}





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#ifdef  DEBUG





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/*******************************************************************************





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* @brief		Reports the name of the source file and the source line number





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* 				where the CHECK_PARAM error has occurred.





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* @param[in]	file Pointer to the source file name





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* @param[in]    line assert_param error line source number





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* @return		None





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*******************************************************************************/





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void check_failed(uint8_t *file, uint32_t line)





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{





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	/* User can add his own implementation to report the file name and line number,





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	 ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */





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	/* Infinite loop */





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	while(1);





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}





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#endif





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/*





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 * @}





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 */