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package org.reprap.devices;
import java.io.IOException;
import org.reprap.Device;
import org.reprap.ReprapException;
import org.reprap.comms.Address;
import org.reprap.comms.Communicator;
import org.reprap.comms.IncomingContext;
import org.reprap.comms.IncomingMessage;
import org.reprap.comms.OutgoingMessage;
/**
*
*/
public class GenericThermalSensor extends Device {
/**
*
*/
public class RequestTemperature extends OutgoingMessage {
/**
*
*/
public static final int MSG_GetTemp = 1;
/* (non-Javadoc)
* @see org.reprap.comms.OutgoingMessage#getBinary()
*/
public byte[] getBinary() {
return new byte [] { MSG_GetTemp };
}
}
/**
*
*/
public class TemperatureResponse extends IncomingMessage {
/**
* @param incomingContext
* @throws IOException
*/
public TemperatureResponse(IncomingContext incomingContext) throws IOException {
super(incomingContext);
}
/**
* @return
* @throws InvalidPayloadException
*/
int GetTemperature() throws InvalidPayloadException {
byte [] reply = getPayload();
if (reply.length != 3)
throw new InvalidPayloadException();
if (reply[0] != 1)
throw new InvalidPayloadException();
return reply[1] + reply[2] << 8;
}
/* (non-Javadoc)
* @see org.reprap.comms.IncomingMessage#isExpectedPacketType(byte)
*/
protected boolean isExpectedPacketType(byte packetType) {
return packetType == RequestTemperature.MSG_GetTemp;
}
}
/**
* @param communicator
* @param address
*/
public GenericThermalSensor(Communicator communicator, Address address) {
super(communicator, address);
}
/**
* @return
* @throws ReprapException
* @throws IOException
*/
double getTemperature() throws ReprapException, IOException {
OutgoingMessage request = new RequestTemperature();
IncomingContext replyContext = sendMessage(request);
TemperatureResponse response = new TemperatureResponse(replyContext);
int unscaled = response.GetTemperature();
// TODO scale this according to callibration info
return unscaled;
}
}
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