Yuji Hosogaya
Modified version of ModbusTCP
Dependencies: EthernetNetIf mbed
Diff: main.cpp
- Revision:
- 0:62be54b8975d
- Child:
- 3:d7d7c67f21fa
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Tue Mar 13 09:11:49 2012 +0000
@@ -0,0 +1,315 @@
+/*
+ * FreeModbus Libary: BARE 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 1.1 2006/08/22 21:35:13 wolti Exp $
+
+* modified from: Thanassis Mavrogeorgiadis 5-12-2011
+ */
+
+#include "mbed.h"
+
+/* ----------------------- Modbus includes ----------------------------------*/
+#include "mb.h"
+#include "mbport.h"
+#include "mbconfig.h"
+
+
+#if MB_TCP_ENABLED == 1
+#include "EthernetNetIf.h"
+EthernetNetIf eth;
+#endif
+
+extern Serial pc;
+
+DigitalOut led1(LED1);
+
+DigitalIn ENET_LINK(P1_25);
+DigitalOut LedLINK(LED4);
+Ticker EtherPinMonitor;
+
+#if MB_TCP_ENABLED == 1
+void EtherPinMonitorFunc(void)
+{
+ LedLINK = !ENET_LINK;
+}
+#endif
+
+/* ----------------------- Defines ------------------------------------------*/
+#define REG_INPUT_START 1001
+#define REG_INPUT_NREGS 4
+
+#define REG_HOLDING_START 2001
+#define REG_HOLDING_NREGS 130
+
+#define REG_COIL_START (3000+1)
+#define REG_COIL_NREGS 8
+#define REG_COIL_BYTES REG_COIL_NREGS/8
+
+#define REG_DISC_START (4000+1)
+#define REG_DISC_NREGS 8
+#define REG_DISC_BYTES REG_DISC_NREGS/8
+
+#define SLAVE_ID 0x0A
+
+/* ----------------------- 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]={0x0123,0x4567,0x89AB,0xCDEF,0xDEAD,0xBEEF,0xDEAD,0xBEEF,0xDEAD,0xBEEF};
+static USHORT usRegCoilStart = REG_COIL_START;
+static UCHAR usRegCoilBuf[REG_COIL_BYTES]={0xA5};
+static USHORT usRegDiscStart = REG_DISC_START;
+static UCHAR usRegDiscBuf[REG_DISC_BYTES]={0x5A};
+
+/* ----------------------- Start implementation -----------------------------*/
+
+
+int main() {
+ eMBErrorCode eStatus;
+
+#if MB_TCP_ENABLED == 1
+ pc.baud(115200);
+ EtherPinMonitor.attach(&EtherPinMonitorFunc, 0.01);
+ printf("Setting up...\n");
+ EthernetErr ethErr = eth.setup();
+ if(ethErr)
+ {
+ printf("Error %d in setup.\n", ethErr);
+ return -1;
+ }
+ printf("Setup OK\n");
+ IpAddr ip = eth.getIp();
+ printf("mbed IP Address is %d.%d.%d.%d\r\n", ip[0], ip[1], ip[2], ip[3]);
+#endif
+
+ Timer tm;
+ tm.start();
+
+#if MB_RTU_ENABLED == 1
+ eStatus = eMBInit( MB_RTU, SLAVE_ID, 0, 9600, MB_PAR_NONE );
+#endif
+#if MB_ASCII_ENABLED == 1
+ eStatus = eMBInit( MB_ASCII, SLAVE_ID, 0, 9600, MB_PAR_NONE );
+#endif
+#if MB_TCP_ENABLED == 1
+ eStatus = eMBTCPInit( MB_TCP_PORT_USE_DEFAULT );
+#endif
+ if (eStatus != MB_ENOERR )
+ printf( "can't initialize modbus stack!\r\n" );
+
+ /* Enable the Modbus Protocol Stack. */
+ eStatus = eMBEnable( );
+ if (eStatus != MB_ENOERR )
+ fprintf( stderr, "can't enable modbus stack!\r\n" );
+
+ // Initialise some registers
+ usRegInputBuf[1] = 0x1234;
+ usRegInputBuf[2] = 0x5678;
+ usRegInputBuf[3] = 0x9abc;
+
+ while(true)
+ {
+#if MB_TCP_ENABLED == 1
+ Net::poll();
+#endif
+/*
+ if(tm.read()>.5)
+ {
+ led1=!led1; //Show that we are alive
+ tm.start();
+ }
+*/
+ eStatus = eMBPoll( );
+
+ /* Here we simply count the number of poll cycles. */
+ usRegInputBuf[0]++;
+ }
+ //return 0;
+}
+
+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++ = ( UCHAR ) ( usRegHoldingBuf[iRegIndex] >> 8 );
+ *pucRegBuffer++ = ( UCHAR ) ( 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--;
+ }
+ }
+ }
+ else
+ {
+ eStatus = MB_ENOREG;
+ }
+ return eStatus;
+}
+
+/*
+ * Following implementation is not actually checked.
+ */
+
+eMBErrorCode
+eMBRegCoilsCB( UCHAR * pucRegBuffer, USHORT usAddress, USHORT usNCoils, eMBRegisterMode eMode )
+{
+ eMBErrorCode eStatus = MB_ENOERR;
+ int iIntRegIndex;
+ int iIntBufNum;
+ int iIntBitNum;
+ int iExtRegIndex=0;
+ int iExtBufNum;
+ int iExtBitNum;
+ UCHAR ucTemp;
+ if( ( usAddress >= REG_COIL_START )
+ && ( usAddress + usNCoils <= REG_COIL_START + REG_COIL_NREGS ) )
+ {
+ iIntRegIndex = ( int )( usAddress - usRegCoilStart );
+
+ while( usNCoils > 0 )
+ {
+ iIntBufNum=iIntRegIndex/8;
+ iIntBitNum=iIntRegIndex%8;
+ iExtBufNum=iExtRegIndex/8;
+ iExtBitNum=iExtRegIndex%8;
+
+ switch ( eMode )
+ {
+ case MB_REG_READ:
+ // Read coils
+ if(iExtBitNum==0){
+ pucRegBuffer[iExtBufNum]=0;
+ }
+ ucTemp=(usRegCoilBuf[iIntBufNum]>>iIntBitNum) & 1;
+ pucRegBuffer[iExtBufNum]|=ucTemp<<iExtBitNum;
+ break;
+
+ case MB_REG_WRITE:
+ // Write coils
+ if(iIntBitNum==0){
+ usRegCoilBuf[iIntBufNum]=0;
+ }
+ ucTemp=(pucRegBuffer[iExtBufNum]>>iExtBitNum) & 1;
+ usRegCoilBuf[iIntBufNum]|=ucTemp<<iIntBitNum;
+ break;
+ }
+ iIntRegIndex++;
+ iExtRegIndex++;
+ usNCoils--;
+
+ }
+ }
+ else
+ {
+ eStatus = MB_ENOREG;
+ }
+
+ return eStatus;
+}
+
+eMBErrorCode
+eMBRegDiscreteCB( UCHAR * pucRegBuffer, USHORT usAddress, USHORT usNDiscrete )
+{
+ eMBErrorCode eStatus = MB_ENOERR;
+ int iIntRegIndex;
+ int iIntBufNum;
+ int iIntBitNum;
+ int iExtRegIndex=0;
+ int iExtBufNum;
+ int iExtBitNum;
+ UCHAR ucTemp;
+ if( ( usAddress >= REG_DISC_START )
+ && ( usAddress + usNDiscrete <= REG_DISC_START + REG_DISC_NREGS ) )
+ {
+ iIntRegIndex = ( int )( usAddress - usRegDiscStart );
+
+ while( usNDiscrete > 0 )
+ {
+ iIntBufNum=iIntRegIndex/8;
+ iIntBitNum=iIntRegIndex%8;
+ iExtBufNum=iExtRegIndex/8;
+ iExtBitNum=iExtRegIndex%8;
+
+ // Read discrete inputs
+ if(iExtBitNum==0){
+ pucRegBuffer[iExtBufNum]=0;
+ }
+ ucTemp=(usRegDiscBuf[iIntBufNum]>>iIntBitNum) & 1;
+ pucRegBuffer[iExtBufNum]|=ucTemp<<iExtBitNum;
+
+ iIntRegIndex++;
+ iExtRegIndex++;
+ usNDiscrete--;
+
+ }
+ }
+ else
+ {
+ eStatus = MB_ENOREG;
+ }
+
+ return eStatus;
+}