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Jason Engelman / Mbed 2 deprecated Modbus

main.cpp@0:7b5d37a81b6b, 2010-10-05 (annotated)

Committer:: tecnosys
Date:: Tue Oct 05 11:51:06 2010 +0000
Revision:: 0:7b5d37a81b6b

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User	Revision	Line number	New contents of line
tecnosys	0:7b5d37a81b6b	1	/*
tecnosys	0:7b5d37a81b6b	2	* FreeModbus Libary: BARE Demo Application
tecnosys	0:7b5d37a81b6b	3	* Copyright (C) 2006 Christian Walter <wolti@sil.at>
tecnosys	0:7b5d37a81b6b	4	*
tecnosys	0:7b5d37a81b6b	5	* This program is free software; you can redistribute it and/or modify
tecnosys	0:7b5d37a81b6b	6	* it under the terms of the GNU General Public License as published by
tecnosys	0:7b5d37a81b6b	7	* the Free Software Foundation; either version 2 of the License, or
tecnosys	0:7b5d37a81b6b	8	* (at your option) any later version.
tecnosys	0:7b5d37a81b6b	9	*
tecnosys	0:7b5d37a81b6b	10	* This program is distributed in the hope that it will be useful,
tecnosys	0:7b5d37a81b6b	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
tecnosys	0:7b5d37a81b6b	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
tecnosys	0:7b5d37a81b6b	13	* GNU General Public License for more details.
tecnosys	0:7b5d37a81b6b	14	*
tecnosys	0:7b5d37a81b6b	15	* You should have received a copy of the GNU General Public License
tecnosys	0:7b5d37a81b6b	16	* along with this program; if not, write to the Free Software
tecnosys	0:7b5d37a81b6b	17	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
tecnosys	0:7b5d37a81b6b	18	*
tecnosys	0:7b5d37a81b6b	19	* File: $Id: demo.c,v 1.1 2006/08/22 21:35:13 wolti Exp $
tecnosys	0:7b5d37a81b6b	20	*/
tecnosys	0:7b5d37a81b6b	21
tecnosys	0:7b5d37a81b6b	22	/* ----------------------- System includes --------------------------------*/
tecnosys	0:7b5d37a81b6b	23
tecnosys	0:7b5d37a81b6b	24	/* ----------------------- Modbus includes ----------------------------------*/
tecnosys	0:7b5d37a81b6b	25	#include "mb.h"
tecnosys	0:7b5d37a81b6b	26	#include "mbport.h"
tecnosys	0:7b5d37a81b6b	27
tecnosys	0:7b5d37a81b6b	28	/* ----------------------- Defines ------------------------------------------*/
tecnosys	0:7b5d37a81b6b	29	#define REG_INPUT_START 1000
tecnosys	0:7b5d37a81b6b	30	#define REG_INPUT_NREGS 4
tecnosys	0:7b5d37a81b6b	31	#define SLAVE_ID 0x0A
tecnosys	0:7b5d37a81b6b	32
tecnosys	0:7b5d37a81b6b	33	/* ----------------------- Static variables ---------------------------------*/
tecnosys	0:7b5d37a81b6b	34	static USHORT usRegInputStart = REG_INPUT_START;
tecnosys	0:7b5d37a81b6b	35	static USHORT usRegInputBuf[REG_INPUT_NREGS];
tecnosys	0:7b5d37a81b6b	36
tecnosys	0:7b5d37a81b6b	37	/* ----------------------- Start implementation -----------------------------*/
tecnosys	0:7b5d37a81b6b	38	int
tecnosys	0:7b5d37a81b6b	39	main( void )
tecnosys	0:7b5d37a81b6b	40	{
tecnosys	0:7b5d37a81b6b	41	eMBErrorCode eStatus;
tecnosys	0:7b5d37a81b6b	42
tecnosys	0:7b5d37a81b6b	43	eStatus = eMBInit( MB_RTU, SLAVE_ID, 0, 9600, MB_PAR_NONE );
tecnosys	0:7b5d37a81b6b	44
tecnosys	0:7b5d37a81b6b	45	/* Enable the Modbus Protocol Stack. */
tecnosys	0:7b5d37a81b6b	46	eStatus = eMBEnable( );
tecnosys	0:7b5d37a81b6b	47
tecnosys	0:7b5d37a81b6b	48	// Initialise some registers
tecnosys	0:7b5d37a81b6b	49	usRegInputBuf[1] = 0x1234;
tecnosys	0:7b5d37a81b6b	50	usRegInputBuf[2] = 0x5678;
tecnosys	0:7b5d37a81b6b	51	usRegInputBuf[3] = 0x9abc;
tecnosys	0:7b5d37a81b6b	52
tecnosys	0:7b5d37a81b6b	53	for( ;; )
tecnosys	0:7b5d37a81b6b	54	{
tecnosys	0:7b5d37a81b6b	55	( void )eMBPoll( );
tecnosys	0:7b5d37a81b6b	56
tecnosys	0:7b5d37a81b6b	57	/* Here we simply count the number of poll cycles. */
tecnosys	0:7b5d37a81b6b	58	usRegInputBuf[0]++;
tecnosys	0:7b5d37a81b6b	59	}
tecnosys	0:7b5d37a81b6b	60	}
tecnosys	0:7b5d37a81b6b	61
tecnosys	0:7b5d37a81b6b	62	eMBErrorCode
tecnosys	0:7b5d37a81b6b	63	eMBRegInputCB( UCHAR * pucRegBuffer, USHORT usAddress, USHORT usNRegs )
tecnosys	0:7b5d37a81b6b	64	{
tecnosys	0:7b5d37a81b6b	65	eMBErrorCode eStatus = MB_ENOERR;
tecnosys	0:7b5d37a81b6b	66	int iRegIndex;
tecnosys	0:7b5d37a81b6b	67
tecnosys	0:7b5d37a81b6b	68	if( ( usAddress >= REG_INPUT_START )
tecnosys	0:7b5d37a81b6b	69	&& ( usAddress + usNRegs <= REG_INPUT_START + REG_INPUT_NREGS ) )
tecnosys	0:7b5d37a81b6b	70	{
tecnosys	0:7b5d37a81b6b	71	iRegIndex = ( int )( usAddress - usRegInputStart );
tecnosys	0:7b5d37a81b6b	72	while( usNRegs > 0 )
tecnosys	0:7b5d37a81b6b	73	{
tecnosys	0:7b5d37a81b6b	74	*pucRegBuffer++ =
tecnosys	0:7b5d37a81b6b	75	( unsigned char )( usRegInputBuf[iRegIndex] >> 8 );
tecnosys	0:7b5d37a81b6b	76	*pucRegBuffer++ =
tecnosys	0:7b5d37a81b6b	77	( unsigned char )( usRegInputBuf[iRegIndex] & 0xFF );
tecnosys	0:7b5d37a81b6b	78	iRegIndex++;
tecnosys	0:7b5d37a81b6b	79	usNRegs--;
tecnosys	0:7b5d37a81b6b	80	}
tecnosys	0:7b5d37a81b6b	81	}
tecnosys	0:7b5d37a81b6b	82	else
tecnosys	0:7b5d37a81b6b	83	{
tecnosys	0:7b5d37a81b6b	84	eStatus = MB_ENOREG;
tecnosys	0:7b5d37a81b6b	85	}
tecnosys	0:7b5d37a81b6b	86
tecnosys	0:7b5d37a81b6b	87	return eStatus;
tecnosys	0:7b5d37a81b6b	88	}
tecnosys	0:7b5d37a81b6b	89
tecnosys	0:7b5d37a81b6b	90	eMBErrorCode
tecnosys	0:7b5d37a81b6b	91	eMBRegHoldingCB( UCHAR * pucRegBuffer, USHORT usAddress, USHORT usNRegs, eMBRegisterMode eMode )
tecnosys	0:7b5d37a81b6b	92	{
tecnosys	0:7b5d37a81b6b	93	eMBErrorCode eStatus = MB_ENOERR;
tecnosys	0:7b5d37a81b6b	94	int iRegIndex;
tecnosys	0:7b5d37a81b6b	95
tecnosys	0:7b5d37a81b6b	96	if (eMode == MB_REG_READ)
tecnosys	0:7b5d37a81b6b	97	{
tecnosys	0:7b5d37a81b6b	98	if( ( usAddress >= REG_INPUT_START )
tecnosys	0:7b5d37a81b6b	99	&& ( usAddress + usNRegs <= REG_INPUT_START + REG_INPUT_NREGS ) )
tecnosys	0:7b5d37a81b6b	100	{
tecnosys	0:7b5d37a81b6b	101	iRegIndex = ( int )( usAddress - usRegInputStart );
tecnosys	0:7b5d37a81b6b	102	while( usNRegs > 0 )
tecnosys	0:7b5d37a81b6b	103	{
tecnosys	0:7b5d37a81b6b	104	*pucRegBuffer++ =
tecnosys	0:7b5d37a81b6b	105	( unsigned char )( usRegInputBuf[iRegIndex] >> 8 );
tecnosys	0:7b5d37a81b6b	106	*pucRegBuffer++ =
tecnosys	0:7b5d37a81b6b	107	( unsigned char )( usRegInputBuf[iRegIndex] & 0xFF );
tecnosys	0:7b5d37a81b6b	108	iRegIndex++;
tecnosys	0:7b5d37a81b6b	109	usNRegs--;
tecnosys	0:7b5d37a81b6b	110	}
tecnosys	0:7b5d37a81b6b	111	}
tecnosys	0:7b5d37a81b6b	112	}
tecnosys	0:7b5d37a81b6b	113
tecnosys	0:7b5d37a81b6b	114	if (eMode == MB_REG_WRITE)
tecnosys	0:7b5d37a81b6b	115	{
tecnosys	0:7b5d37a81b6b	116	if( ( usAddress >= REG_INPUT_START )
tecnosys	0:7b5d37a81b6b	117	&& ( usAddress + usNRegs <= REG_INPUT_START + REG_INPUT_NREGS ) )
tecnosys	0:7b5d37a81b6b	118	{
tecnosys	0:7b5d37a81b6b	119	iRegIndex = ( int )( usAddress - usRegInputStart );
tecnosys	0:7b5d37a81b6b	120	while( usNRegs > 0 )
tecnosys	0:7b5d37a81b6b	121	{
tecnosys	0:7b5d37a81b6b	122	usRegInputBuf[iRegIndex] = ((unsigned int) pucRegBuffer << 8) \| ((unsigned int) (pucRegBuffer+1));
tecnosys	0:7b5d37a81b6b	123	pucRegBuffer+=2;
tecnosys	0:7b5d37a81b6b	124	iRegIndex++;
tecnosys	0:7b5d37a81b6b	125	usNRegs--;
tecnosys	0:7b5d37a81b6b	126	}
tecnosys	0:7b5d37a81b6b	127	}
tecnosys	0:7b5d37a81b6b	128	}
tecnosys	0:7b5d37a81b6b	129
tecnosys	0:7b5d37a81b6b	130	return eStatus;
tecnosys	0:7b5d37a81b6b	131	}
tecnosys	0:7b5d37a81b6b	132
tecnosys	0:7b5d37a81b6b	133
tecnosys	0:7b5d37a81b6b	134	eMBErrorCode
tecnosys	0:7b5d37a81b6b	135	eMBRegCoilsCB( UCHAR * pucRegBuffer, USHORT usAddress, USHORT usNCoils,
tecnosys	0:7b5d37a81b6b	136	eMBRegisterMode eMode )
tecnosys	0:7b5d37a81b6b	137	{
tecnosys	0:7b5d37a81b6b	138	return MB_ENOREG;
tecnosys	0:7b5d37a81b6b	139	}
tecnosys	0:7b5d37a81b6b	140
tecnosys	0:7b5d37a81b6b	141	eMBErrorCode
tecnosys	0:7b5d37a81b6b	142	eMBRegDiscreteCB( UCHAR * pucRegBuffer, USHORT usAddress, USHORT usNDiscrete )
tecnosys	0:7b5d37a81b6b	143	{
tecnosys	0:7b5d37a81b6b	144	return MB_ENOREG;
tecnosys	0:7b5d37a81b6b	145	}
tecnosys	0:7b5d37a81b6b	146

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	05 Oct 2010
Imports:	15
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	1
Followers:	2

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main.cpp@0:7b5d37a81b6b, 2010-10-05 (annotated)

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