[syntax=c]* FreeModbus Libary: AVR 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 1.7 2006/06/15 15:38:02 wolti Exp $
*/
/* ----------------------- AVR includes -------------------------------------*/
#include "avr/io.h"
#include "avr/interrupt.h"
/* ----------------------- Modbus includes ----------------------------------*/
#include "mb.h"
#include "mbport.h"
/* ----------------------- Defines ------------------------------------------*/
#define REG_INPUT_START 1
#define REG_INPUT_NREGS 200
#define REG_HOLD_START 1
#define REG_HOLD_NREGS 200
/* ----------------------- Static variables ---------------------------------*/
static USHORT usRegInputStart = REG_INPUT_START;
static USHORT usRegInputBuf[REG_INPUT_NREGS];
static SHORT usRegHoldingStart = REG_HOLD_START;
static SHORT usRegHoldingBuf[REG_HOLD_NREGS];
static float zm_fl1=0;
/* ----------------------- Start implementation -----------------------------*/
int
main( void )
{
ULONGlicznik1=0;
ULONGlicz_t1;
USHORT *wsk1;
USHORT *wsk2;
const UCHAR ucSlaveID[] = { 0xAA, 0xBB, 0xCC };
eMBErrorCode eStatus;
eStatus = eMBInit( MB_RTU, 0x01, 0, 9600, MB_PAR_NONE );
eStatus = eMBSetSlaveID( 0x34, TRUE, ucSlaveID, 3 );
sei( );
/* Enable the Modbus Protocol Stack. */
eStatus = eMBEnable( );
wsk1=&licznik1;
wsk2=&zm_fl1;
for( ;; )
{
( void )eMBPoll( );
/* Here we simply count the number of poll cycles. */
licz_t1=++licznik1;
wsk1=&licznik1;
zm_fl1=zm_fl1+0.0001;
//usRegInputBuf[0]= (unsigned short)(licz_t1);
//usRegInputBuf[1]= (unsigned short)(licz_t1>>16);
usRegInputBuf[0]= (unsigned short)(*wsk1);
usRegInputBuf[1]= (unsigned short)(*(wsk1+1));
usRegInputBuf[4]= (unsigned short)(*wsk2);
usRegInputBuf[5]= (unsigned short)(*(wsk2+1));
}
}
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;
}
usRegInputBuf[2]++;
return eStatus;
}
eMBErrorCode
eMBRegHoldingCB( UCHAR * pucRegBuffer, USHORT usAddress, USHORT usNRegs,
eMBRegisterMode eMode )
{
eMBErrorCode eStatus = MB_ENOERR;
int iRegIndex;
switch (eMode)
{
case MB_REG_READ:
if( ( usAddress >= REG_HOLD_START )
&& ( usAddress + usNRegs <= REG_HOLD_START + REG_HOLD_NREGS ) )
{
iRegIndex = ( int )( usAddress - usRegHoldingStart );
while( usNRegs > 0 )
{
*pucRegBuffer++ =
( unsigned char )( usRegHoldingBuf[iRegIndex] >> 8 );
*pucRegBuffer++ =
( unsigned char )( usRegHoldingBuf[iRegIndex] & 0xFF );
iRegIndex++;
usNRegs--;
}
}
else
{
eStatus = MB_ENOREG;
}
break;
case MB_REG_WRITE:
if( ( usAddress >= REG_HOLD_START )
&& ( usAddress + usNRegs <= REG_HOLD_START + REG_HOLD_NREGS ) )
{
iRegIndex = ( int )( usAddress - usRegHoldingStart );
while( usNRegs > 0 )
{
usRegHoldingBuf[iRegIndex] = *pucRegBuffer++;
usRegHoldingBuf[iRegIndex] = (usRegHoldingBuf[iRegIndex] << 8)|*pucRegBuffer++;
iRegIndex++;
usNRegs--;
}
}
else
{
eStatus = MB_ENOREG;
}
break;
}
usRegHoldingBuf[2]++;
return eStatus;
}
eMBErrorCode
eMBRegCoilsCB( UCHAR * pucRegBuffer, USHORT usAddress, USHORT usNCoils,
eMBRegisterMode eMode )
{
return MB_ENOREG;
}
eMBErrorCode
eMBRegDiscreteCB( UCHAR * pucRegBuffer, USHORT usAddress, USHORT usNDiscrete )
{
return MB_ENOREG;
}[/syntax]Statystyki: Napisane przez llemar — 3 kwi 2014, o 08:42
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