porttcp.c
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/*
* FreeModbus Libary: lwIP Port
* Copyright (C) 2006 Christian Walter <wolti@sil.at>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* File: $Id: porttcp.c,v 1.1 2006/08/30 23:18:07 wolti Exp $
*/
/* ----------------------- System includes ----------------------------------*/
#include <stdio.h>
#include <string.h>
#include "port.h"
/* ----------------------- uIP includes ------------------------------------*/
//#include "uip_modbus.h"
//#include "uip.h"
/* ----------------------- Modbus includes ----------------------------------*/
#include "mb.h"
#include "mbport.h"
//#include "tcp_server_demo.h"
/* ----------------------- MBAP Header --------------------------------------*/
#define MB_TCP_UID 6
#define MB_TCP_LEN 4
#define MB_TCP_FUNC 7
/* ----------------------- Defines -----------------------------------------*/
#define DEBUG 0
#if DEBUG
#define PRINTF(...) printf(__VA_ARGS__)
#else
#define PRINTF(...)
#endif
#define MB_TCP_DEFAULT_PORT 502 /* TCP listening port. */
#define MB_TCP_BUF_SIZE ( 256 + 7 ) /* Must hold a complete Modbus TCP frame. */
/* ----------------------- Prototypes ---------------------------------------*/
UCHAR ucTCPRequestFrame[MB_TCP_BUF_SIZE];
USHORT ucTCPRequestLen;
UCHAR ucTCPResponseFrame[MB_TCP_BUF_SIZE];
USHORT ucTCPResponseLen=0;
u8 tcp_server_sendbuf[10]; //自行添加代码用于接收Freemodb us的反馈数据
//struct tcp_pcb ucTCPResponseFrame[MB_TCP_BUF_SIZE];
BOOL bFrameSent = FALSE;
/* ----------------------- Static variables ---------------------------------*/
/* ----------------------- Static functions ---------------------------------*/
/* ----------------------- Begin implementation -----------------------------*/
BOOL
xMBTCPPortInit( USHORT usTCPPort )
{
BOOL bOkay = FALSE;
USHORT usPort;
if( usTCPPort == 0 )
{
usPort = MB_TCP_DEFAULT_PORT;
}
else
{
usPort = (USHORT)usTCPPort;
}
// 侦听端口 502端口
//uip_listen(HTONS(usPort));
bOkay = TRUE;
return bOkay;
}
void
vMBTCPPortClose( )
{
}
void
vMBTCPPortDisable( void )
{
}
BOOL
xMBTCPPortGetRequest( UCHAR ** ppucMBTCPFrame, USHORT * usTCPLength )
{
*ppucMBTCPFrame = &ucTCPRequestFrame[0];
*usTCPLength = ucTCPRequestLen;
/* Reset the buffer. */
ucTCPRequestLen = 0;
return TRUE;
}
BOOL
xMBTCPPortSendResponse( const UCHAR * pucMBTCPFrame, USHORT usTCPLength )
{
// memcpy( ucTCPResponseFrame , pucMBTCPFrame , usTCPLength);
ucTCPResponseLen = usTCPLength;
memcpy( tcp_server_sendbuf , pucMBTCPFrame , usTCPLength);
bFrameSent = TRUE; // 通过uip_poll发送数据
return bFrameSent;
}
//void uip_modbus_appcall(void)
//{
//// if(uip_connected())
//// {
////
//// }
////
//// if(uip_closed())
//// {
////
//// }
//
// if(uip_newdata())
// {
//
// // 获得modbus请求
// //memcpy(ucTCPRequestFrame, uip_appdata, uip_len );
//
// memcpy(ucTCPRequestFrame, tcp_server_recvbuf, This_recvCnt );
//
// ucTCPRequestLen = This_recvCnt;
// // 向 modbus poll发送消息
// xMBPortEventPost( EV_FRAME_RECEIVED );
// }
//
// if(uip_poll())
// {
// if(bFrameSent)
// {
// bFrameSent = FALSE;
// // uIP发送Modbus应答数据包
//
// //uip_send( ucTCPResponseFrame , ucTCPResponseLen );
//
// tcp_server_usersent( ucTCPResponseFrame); // , ucTCPResponseLen );
// }
// }
// if(uip_poll())
// {
// if(bFrameSent)
// {
// bFrameSent = FALSE;
// // uIP发送Modbus应答数据包
//
// //uip_send( ucTCPResponseFrame , ucTCPResponseLen );
// tcp_server_usersent( ucTCPResponseFrame); // , ucTCPResponseLen );
// }
// }
//}