ncku ucb tohoku gse software, t.t. wang 1 ground support equipment(gse) software tzu-te wang

NCKU UCB Tohoku GSE Software, T.T. Wang 1

Ground Support Equipment(GSE)Software

Tzu-Te Wang


Software Architecture

SOH Decoder CMD Encoder

Queue

Queue Writer/Reader

Interface to ISUAL

Electrical test GSE

Upper Level

Lower Level

User I/F(USER to S/W)

Software I/F(S/W to S/W)

Software I/F(S/W to H/W)

Java

MS C


STOL ProceduresScript Filestest1.PRC

NSPO ProcedureScript File

test1.NSPO

Compiler.classInterpreterTranslator

JAVASTOL Translator

GSE004.jar

Involved CMD EncoderGSE008.jar

DEBUG Window

Command packets

NSPO Window(Display NSPO Script Format)

STOL Window(Display/Edit UCB Script)

Software Flow diagram(1/3)


SOH.classApID=0x71DApID=0x71C

JAVASOH DecoderGSE006.jar

SOHRaw Data File

SOH.db

Queue

RS 422Board

House Keeping Data

Pickup value from data file

Query meaning of value for specified data field

SOH Display

UCBSerial I/O Bridge

SOH.EXE




NSPOCommand ScriptFile ‘nspo002.txt’

User

Java ClassesI_HV_MAYI.class

:

JAVACMD Encoder

GSE008.jarCMD

Raw Data FileCMD.db

Queue

RS 422Board

Commands Packets

Fill values in raw data file

Invoke method to handle parameterizes in each command packet

UCBSerial I/O Bridge

CMD.EXE


User Interface(1/4)

• Definition:– SOH decoder use U/I to display information.

– CMD encoder use U/I to grab commands.

– STOL translator use U/I to edit and interpret procedures.

• Requirement:– The U/I must show all information clearly.

– The U/I must has abilities to handle file-system.

– The U/I must be easy to use.


User Interface(2/4)

• SOH display U/I– Classify whole digital House-Keeping data into 5 groups.– Use table to show numerical data.– Use icons to present modes.– Use buttons to present 2-state status.– Use labels to display time based information.– Use labels to display version of flight software.– Use text box to display whole SOH data in order.– Display screen can be frozen/unfrozen.– Display screen will update every 5 seconds.– Display screen shows the time of last SOH and local

time.


User Interface


User Interface(3/4)

• CMD grabbing U/I– Use text box for directly input script name.– Use File-Open to choose script from

file-list/folder.– For example

• Use button ‘28V’ to enable 28 volts power output.

• Use button ‘PPS’ to start pulse-per-second signal.


User Interface


User Interface(4/4)

• STOL translator U/I– Use menu ‘Open’ to open a procedure and edit.– Use menu ‘Save’ to save procedure with specified

name.– Use menu ‘Translate’ to translate current procedure in

editor.– Upper split window will output debug messages.– Middle split window will output interpreted NSPO

script.– Lower split window is editor for STOL procedures.


User Interface


Software Interface(1/2)

CMDQueue

SOHQueue

NSPOScript

GPSScript

SerialI/O

CMD.java TPA.java

CMD.EXE SOH.EXE

SOH.java

SOHDisplay

RS422H/W driver

ISUAL

SoftwareInterface


Software Interface(2/2)

• Both Java and MS C have to access queue in the same approach. Java is coded base on C program.

• To prevent overwriting, command queue must big enough.

• Only one queue opened for each propose(SOH and CMD queue).

• For upper level program(ex:Java), it allow several programs to access the same queue at the same time. (ex: SOH decoder, freeze current one and open another new one for comparing.)

• For lower level program(ex:SOH.EXE), it only accept one program to access queue.


Current Status

• CMD encoder can accept NSPO script and generate output (CCSDS packets, define in 8564-x7) to command queue. And CMD.EXE can read the queue and output commands to ISUAL’s DPU.

• SOH.EXE can read from ISUAL’s DPU and generate output (CCSDS packets, define in 8565-x7) to SOH queue. And SOH decoder can read the queue to display the house-keeping data on screen.


Future Work

• Implement STOL, and bind with CMD encoder. Directly generate the output to queue.

• Re-organize SOH display to fit request.

• Integrate with telemetry packets display program.

ncku ucb tohoku gse software, t.t. wang 1 ground support equipment(gse) software tzu-te wang

Documents