freemodbus-1.5版源码分享

ID:411025 · 发表于 2018-10-17 11:57

freemodbus-1.5版分享一下

单片机源程序如下:

/*
* FreeModbus Libary: MSP430 Demo Application
* Copyright (C) 2006 Christian Walter <wolti@sil.at>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* File: $Id: demo.c,v 1.3 2006/11/19 15:22:40 wolti Exp $
*/
/* ----------------------- Platform includes --------------------------------*/
#include "port.h"
#include "dco.h"
/* ----------------------- Modbus includes ----------------------------------*/
#include "mb.h"
#include "mbport.h"
/* ----------------------- Defines ------------------------------------------*/
#define REG_INPUT_START 1000
#define REG_INPUT_NREGS 4
#define REG_HOLDING_START 1000
#define REG_HOLDING_NREGS 130
/* ----------------------- Static variables ---------------------------------*/
static USHORT usRegInputStart = REG_INPUT_START;
static USHORT usRegInputBuf[REG_INPUT_NREGS];
static USHORT usRegHoldingStart = REG_HOLDING_START;
static USHORT usRegHoldingBuf[REG_HOLDING_NREGS];
/* ----------------------- Start implementation -----------------------------*/
int
main( void )
{
eMBErrorCode eStatus;
volatile USHORT usACLKCnt;
/* Stop Watchdog Timer. */
WDTCTL = WDTPW + WDTHOLD;
/* Delay for ACLK startup. */
for( usACLKCnt = 0xFFFF; usACLKCnt != 0; usACLKCnt-- );
if( cTISetDCO( TI_DCO_4MHZ ) == TI_DCO_NO_ERROR )
{
_EINT( );
/* Initialize Protocol Stack. */
if( ( eStatus = eMBInit( MB_RTU, 0x0A, 0, 38400, MB_PAR_EVEN ) ) != MB_ENOERR )
{
}
/* Enable the Modbus Protocol Stack. */
else if( ( eStatus = eMBEnable( ) ) != MB_ENOERR )
{
}
else
{
for( ;; )
{
( void )eMBPoll( );
/* Here we simply count the number of poll cycles. */
usRegInputBuf[0]++;
}
}
}
for( ;; );
}
eMBErrorCode
eMBRegInputCB( UCHAR * pucRegBuffer, USHORT usAddress, USHORT usNRegs )
{
eMBErrorCode eStatus = MB_ENOERR;
int iRegIndex;
if( ( usAddress >= REG_INPUT_START )
&& ( usAddress + usNRegs <= REG_INPUT_START + REG_INPUT_NREGS ) )
{
iRegIndex = ( int )( usAddress - usRegInputStart );
while( usNRegs > 0 )
{
*pucRegBuffer++ = ( unsigned char )( usRegInputBuf[iRegIndex] >> 8 );
*pucRegBuffer++ = ( unsigned char )( usRegInputBuf[iRegIndex] & 0xFF );
iRegIndex++;
usNRegs--;
}
}
else
{
eStatus = MB_ENOREG;
}
return eStatus;
}
eMBErrorCode
eMBRegHoldingCB( UCHAR * pucRegBuffer, USHORT usAddress, USHORT usNRegs, eMBRegisterMode eMode )
{
eMBErrorCode eStatus = MB_ENOERR;
int iRegIndex;
if( ( usAddress >= REG_HOLDING_START ) &&
( usAddress + usNRegs <= REG_HOLDING_START + REG_HOLDING_NREGS ) )
{
iRegIndex = ( int )( usAddress - usRegHoldingStart );
switch ( eMode )
{
/* Pass current register values to the protocol stack. */
case MB_REG_READ:
while( usNRegs > 0 )
{
*pucRegBuffer++ = ( unsigned char )( usRegHoldingBuf[iRegIndex] >> 8 );
*pucRegBuffer++ = ( unsigned char )( usRegHoldingBuf[iRegIndex] & 0xFF );
iRegIndex++;
usNRegs--;
}
break;
/* Update current register values with new values from the
* protocol stack. */
case MB_REG_WRITE:
while( usNRegs > 0 )
{
usRegHoldingBuf[iRegIndex] = *pucRegBuffer++ << 8;
usRegHoldingBuf[iRegIndex] |= *pucRegBuffer++;
iRegIndex++;
usNRegs--;
}
}
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freemodbus-v1.5官网支持stm32.zip (4.16 MB, 下载次数: 137)

ID:302850 · 发表于 2020-4-21 19:05

感谢分享，很棒

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