146 lines
4.5 KiB
C
146 lines
4.5 KiB
C
/*
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* FreeModbus Libary: MCF5235 Demo Application
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* Copyright (c) 2007 Christian Walter <wolti@sil.at>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* File: $Id$
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*/
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/* ------------------------ System includes ------------------------------- */
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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 <assert.h>
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/* ------------------------ FreeRTOS includes ----------------------------- */
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#include "FreeRTOS.h"
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#include "task.h"
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/* ------------------------ FreeModbus includes --------------------------- */
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#include "mb.h"
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/* ------------------------ Project includes ------------------------------ */
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#include "mcf5xxx.h"
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#include "mcf523x.h"
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#include "m523xbcc.h"
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/* ------------------------ Defines ------------------------------------------*/
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#define REG_INPUT_START 1000
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#define REG_INPUT_NREGS 4
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/* ----------------------- Static variables ---------------------------------*/
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static USHORT usRegInputStart = REG_INPUT_START;
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static USHORT usRegInputBuf[REG_INPUT_NREGS];
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/* ----------------------- Static functions ---------------------------------*/
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static void vModbusTask( void *pvParameters );
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static void vTestTask( void *pvParameters );
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/* ------------------------ Implementation -------------------------------- */
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void
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main( void )
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{
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( void )xTaskCreate( vModbusTask, NULL, configMINIMAL_STACK_SIZE, NULL,
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tskIDLE_PRIORITY, NULL );
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/* Now all the tasks have been started - start the scheduler. */
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vTaskStartScheduler( );
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}
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static void
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vModbusTask( void *pvParameters )
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{
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( void )pvParameters;
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/* Select either ASCII or RTU Mode. */
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( void )eMBInit( MB_RTU, 0x0A, 0, 38400, MB_PAR_EVEN );
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/* Enable the Modbus Protocol Stack. */
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( void )eMBEnable( );
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/* Enter main loop. */
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for( ;; )
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{
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/* Call the main polling loop of the Modbus protocol stack. */
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( void )eMBPoll( );
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}
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}
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eMBErrorCode
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eMBRegInputCB( UCHAR * pucRegBuffer, USHORT usAddress, USHORT usNRegs )
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{
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eMBErrorCode eStatus = MB_ENOERR;
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int iRegIndex;
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if( ( usAddress >= REG_INPUT_START )
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&& ( usAddress + usNRegs <= REG_INPUT_START + REG_INPUT_NREGS ) )
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{
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iRegIndex = ( int )( usAddress - usRegInputStart );
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while( usNRegs > 0 )
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{
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*pucRegBuffer++ = ( unsigned char )( usRegInputBuf[iRegIndex] >> 8 );
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*pucRegBuffer++ = ( unsigned char )( usRegInputBuf[iRegIndex] & 0xFF );
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iRegIndex++;
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usNRegs--;
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}
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}
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else
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{
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eStatus = MB_ENOREG;
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}
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return eStatus;
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}
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eMBErrorCode
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eMBRegHoldingCB( UCHAR * pucRegBuffer, USHORT usAddress, USHORT usNRegs, eMBRegisterMode eMode )
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{
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( void )pucRegBuffer;
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( void )usAddress;
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( void )usNRegs;
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( void )eMode;
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return MB_ENOREG;
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}
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eMBErrorCode
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eMBRegCoilsCB( UCHAR * pucRegBuffer, USHORT usAddress, USHORT usNCoils, eMBRegisterMode eMode )
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{
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( void )pucRegBuffer;
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( void )usAddress;
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( void )usNCoils;
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( void )eMode;
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return MB_ENOREG;
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}
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eMBErrorCode
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eMBRegDiscreteCB( UCHAR * pucRegBuffer, USHORT usAddress, USHORT usNDiscrete )
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{
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( void )pucRegBuffer;
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( void )usAddress;
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( void )usNDiscrete;
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return MB_ENOREG;
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}
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