JbedSmmApplication.TelemetryManagement
Class JbedSmmTmSender

java.lang.Object
  |
  +--RtjAocsFramework.BasicObjects.RootObject
        |
        +--RtjAocsFramework.BasicObjects.AocsObject
              |
              +--JbedSmmApplication.TelemetryManagement.JbedSmmTmSender

All Implemented Interfaces:

ActiveObject, Configurable, Resettable, Telemeterable

public class JbedSmmTmSender

extends AocsObject

implements ActiveObject

The application specific component that is responsible for forwarding a TM buffer to the ground station. This component performs operations that are not compatible with RT constraints. It should therefore execute as a non-RT thread. The TM buffer to be forwarded to the ground is acquired from the JbedSmmTelemetry stream component. The hardware channel through which TM buffer data are forwarded to the ground is represented by a PrintWriter component. One TM buffer is sent as a -terminated string where data items are separated by blanck characters. Change Record:

• Version 2.0: Changes made further to the introduction of class IntArray to encapsulate an array. Removed one unnecessary 'import' statement. Changed calls to method setSize on class IntArray to calls to method setArraySize. Done on 26.03.03

Copyright: see the Copyright Notice.

Version:

2.0

Author:

V. Cechticky/A. Pasetti (ETH-Zurich)

Field Summary

Fields inherited from interface RtjAocsFramework.TelemetryManagement.Telemeterable

DEBUG_TM, LONG_TM, NORMAL_TM, NTMFORMATS, SHORT_TM

Constructor Summary

JbedSmmTmSender()
Create an application specific component responsible for sending telemetry data.

Method Summary

boolean	initialize() Initialize an active object before it is scheduled.
boolean	isConfigured() Check that the telemetry stream component is loaded.
void	resetConfiguration() Unload the the telemetry stream component.
void	runOneCycle(int deadline) Write the TM buffer data to the PrintWriter representing the channel through which TM data are forwarded to the ground station.
void	setConnection(JbedSmmConnectionInstaller connection) Sets a component that is resposible for establishment of a connection between the client and server.
void	setTelemetryStream(JbedSmmTelemetryStream tmStream) Sets the application specific telemetry stream.
boolean	terminate() Perfrom any shutdown actions before an active is de-scheduled.

Methods inherited from class RtjAocsFramework.BasicObjects.AocsObject

addConfigurationListener, addFailureListener, finalize, getAocsClock, getConfigurationListenerList, getCycle, getDestructionRecoveryAction, getFailureListenerList, getSystemManager, getTelemetryFormat, getTelemetryImageLength, getTime, removeConfigurationListener, removeFailureListener, reportConfigurationEvent, reportFailure, reset, resetStaticConfiguration, setAocsClock, setDestructionRecoveryAction, setMaxNumberOfConfigurationListeners, setMaxNumberOfFailureListeners, setSystemManager, setTelemetryFormat, writeToTelemetry

Methods inherited from class RtjAocsFramework.BasicObjects.RootObject

getClassId, getInstanceId, setClassId

Methods inherited from class java.lang.Object

clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

JbedSmmTmSender

public JbedSmmTmSender()

Create an application specific component responsible for sending telemetry data.

Method Detail

isConfigured

public boolean isConfigured()

Check that the telemetry stream component is loaded.

Specified by:

isConfigured in interface Configurable

Overrides:

isConfigured in class AocsObject

resetConfiguration

public void resetConfiguration()

Unload the the telemetry stream component.

Specified by:

resetConfiguration in interface Configurable

Overrides:

resetConfiguration in class AocsObject

setTelemetryStream

public void setTelemetryStream(JbedSmmTelemetryStream tmStream)

Sets the application specific telemetry stream.

Parameters:

tmStream - a telemetry stream

setConnection

public void setConnection(JbedSmmConnectionInstaller connection)

Sets a component that is resposible for establishment of a connection between the client and server.

Parameters:

connection - the connection component

runOneCycle

public void runOneCycle(int deadline)

Write the TM buffer data to the PrintWriter representing the channel through which TM data are forwarded to the ground station. The TM Buffer to be thus written is acquired from the telemetry stream component. Since the telemetry stream component and the TmSender component should never operate on the same buffer, the telemetry stream component is given a new TM buffer to replace the one which is being processed by the TmSender component. The data in the TM buffer are sent one at a time and are separated by a blank character. After all data have been sent, a is sent.

Specified by:

runOneCycle in interface ActiveObject

Parameters:

deadline - deadline by which the object must have returned. This parameter allows implementation of cooperative scheduling.

initialize

public boolean initialize()

Description copied from interface: ActiveObject

Initialize an active object before it is scheduled.

Specified by:

initialize in interface ActiveObject

Returns:

true if initialization was successful.

terminate

public boolean terminate()

Description copied from interface: ActiveObject

Perfrom any shutdown actions before an active is de-scheduled.

Specified by:

terminate in interface ActiveObject

Returns:

true if shutdown was successful.