com.invertor.modbus.msg.response.ReadCoilsResponse Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of jlibmodbus Show documentation
Show all versions of jlibmodbus Show documentation
Implementation of the Modbus protocol in Java language
package com.invertor.modbus.msg.response;
import com.invertor.modbus.Modbus;
import com.invertor.modbus.exception.ModbusNumberException;
import com.invertor.modbus.msg.base.AbstractReadResponse;
import com.invertor.modbus.net.stream.base.ModbusInputStream;
import com.invertor.modbus.net.stream.base.ModbusOutputStream;
import com.invertor.modbus.utils.DataUtils;
import com.invertor.modbus.utils.ModbusFunctionCode;
import java.io.IOException;
import java.util.Arrays;
/*
* Copyright (C) 2016 "Invertor" Factory", JSC
* [http://www.sbp-invertor.ru]
*
* This file is part of JLibModbus.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Authors: Vladislav Y. Kochedykov, software engineer.
* email: [email protected]
*/
public class ReadCoilsResponse extends AbstractReadResponse {
private byte[] buffer = new byte[0];
public ReadCoilsResponse(int serverAddress) throws ModbusNumberException {
super(serverAddress);
}
static public int calcByteCount(boolean[] coils) {
return calcByteCount(coils.length);
}
static public int calcByteCount(int coilCount) {
return (int) Math.ceil((double) coilCount / 8);
}
/**
* returns a copy of the raw byte-buffer
*
* @return registers bytes
*/
final public byte[] getBytes() {
return Arrays.copyOf(buffer, buffer.length);
}
final public boolean[] getCoils() {
return DataUtils.toBitsArray(buffer, buffer.length * 8);
}
final public void setCoils(boolean[] coils) throws ModbusNumberException {
this.buffer = DataUtils.toByteArray(coils);
setByteCount(calcByteCount(coils));
}
@Override
final protected void readData(ModbusInputStream fifo) throws IOException {
buffer = new byte[getByteCount()];
int size;
if ((size = fifo.read(buffer)) < buffer.length)
Modbus.log().warning(buffer.length + " bytes expected, but " + size + " received.");
}
@Override
final protected void writeData(ModbusOutputStream fifo) throws IOException {
fifo.write(buffer);
}
@Override
public int getFunction() {
return ModbusFunctionCode.READ_COILS.toInt();
}
}