emulib.plugins.device

Interface DeviceContext<T>

Type Parameters:

T - Type of data which can be transferred to/from this device

All Superinterfaces:

Context

public interface DeviceContext<T>
extends Context

Interface for basic context of the device. If device support more functionality than input or output, it should be extended (or implemented by an abstract class), and then made public.

Method Summary

Modifier and Type	Method and Description
Class<T>	getDataType() Get the type of transferred data.
T	read() Read data from the device.
void	write(T val) Writes/sends data to the device.

Method Detail

read

T read()
throws IOException

Read data from the device. From the CPU point of view, this should be an implementation of the "IN" operation. The device should return one elementary unit (e.g. byte) of its input data. I/O operations are considered as events that occurred onto this device.

Returns:

elementary data read from device

Throws:

IOException - if something goes wrong

write

void write(T val)
    throws IOException

Writes/sends data to the device. From the CPU point of view, this should be an implementation of the "OUT" operation. The device should accept one elementary unit (e.g. byte) of the output data. I/O operations are considered as events that occurred onto this device.

Parameters:

val - data to be written to the device

Throws:

IOException - if something goes wrong

getDataType

Class<T> getDataType()

Get the type of transferred data. As you can see, methods read and write use Object as the transferred data type. This method specifies the data type.

Returns:

type of transferred data