This slide presentation reviews the use of scripting languages in Ground Operations Command and Control. It describes the use of scripting languages in a historical context, the advantages and disadvantages of scripts. It describes the Enhanced and Redesigned Scripting (ERS) language, that was designed to combine the features of a scripting language and the graphical and IDE richness of a programming language with the utility of scripting languages. ERS uses the Microsoft Visual Studio programming environment and offers custom controls that enable an ERS developer to extend the Visual Basic and C sharp language interface with the Payload Operations Integration Center (POIC) telemetry and command system

Pedoto, Ramon

Ritter, George

NASA Technical Reports Server

Th^ N^xt G^n^rati1n 1f Gr1und O p ^rati1ns
--	
C1mmand and C1ntr1l;
Scripting in C# and Visual Basic
GeorgeAL	 Ritter
https://ntrs.nasa.gov/search.jsp?R=20100020959 2019-08-30T09:43:26+00:00Z
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control features that make an ERS program feel and operate like
of 3 major ieces
ERS Operation
• In ERS Operrtion the user crn crerte, edit, delete, vrlidrte, rnd run
ERS scripting projects.

ERS Project Wizard
• Here the user must select an active “EPC	 I Al-o ru
a specific set of

Wo-mmahimERS Re-Cap
Sample ERS “Directives
• Ask (variabl"): Prompts th" op"rator for input and waits until a
r"sum" dir"ctiv" is "nt"r"d. Th" valu" "nt"r"d is stor"d in
Lvariabl".M'
• Sampl" Lat"st (): Updat" s all MSIDs (variabl"s) with th"ir lat"st
pack"t valu"s.
• Sampl" N"xt (): Updat"s all MSIDs (variabl"s) with th"ir n"xt
pack"t valu"s.

'i'nic
Sample ERS Script
vdlue 10 times
To 10
next pdcket of vdlid sdmple vdlues
leNextVdlid()
e the first sdmple vdlue of the MSID 'Pkt1001test'
cdledVdlue = Pkt1001test.Sdmple(0)* scdle
te the scdled vdlue bdck out ds the Pseudo MSID 'Ext0test001'
est001.Upddte(scdledVdlue)
• ERS provid"s script controA Ior a v"ri Ii"d ERS script at runStim" through ERS Sprovid"d
Imminput/output
=.^..
 m"thods.
	 —
• Th"s" incAud" m"thods to writ" out m"ssag"s and to prompt a us"r Ior input.
Pre-Conclusion
• Scripts ar' a p•w'r t••l f•r spac' !r•u 1d •p'rati• 1s
•ff'ri 1! a r'lativ'ly simpl' sy 1tax a 1d a 1 ' 1vir• 1m' 1t that
is i 1t'!rat'd w'll with th' h•st !r•u 1d syst'm.
• Scripts •ff'r fl•w-c• 1tr•l fu 1cti• 1s thatmak' th'm id' al
NQ1firmati• 1.
Conclusion
RS is Integrate• with Microsoft's Visual Stu•io.
– Lots of VB an• C# co•ers, an• we concentrate on a••ing more hooks to our groun• system
RS wizar•s allow easy program startup an• access to telemetry an• c omman•
bjects.
RS provi•es a po	 ows thMILO= wil 	 user tomonitor progress an• for confirmation execution of critical tasks if necessary,
=
ser input/output actions in textual log f
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Nomenclature
	
.— ..	 .... —...	 ..	 ^ .	 .—^.—^
ASP = Active Server Page
CLI = Command Line Interface
CSC = Computer Science Corporation
C2 = Command and Control
C3ISR = Command, Control, Communications,Intelligence, Surveillanceand Reconnaissance
C#	 = ‘C’ “sharp”, a programming language
EHS = Enhanced HOSC System


The Next Generation of Ground Operations Command and Control; Scripting in C Sharp and Visual Basic

Scripting languages have become a common method for implementing command and control solutions in space ground operations. The Systems Test and Operations Language (STOL), the Huntsville Operations Support Center (HOSC) Scripting Language Processor (SLP), and the Spacecraft Control Language (SCL) offer script-commands that wrap tedious operations tasks into single calls. Since script-commands are interpreted, they also offer a certain amount of hands-on control that is highly valued in space ground operations. Although compiled programs seem to be unsuited for interactive user control and are more complex to develop, Marshall Space flight Center (MSFC) has developed a product called the Enhanced and Redesign Scripting (ERS) that makes use of the graphical and logical richness of a programming language while offering the hands-on and ease of control of a scripting language. ERS is currently used by the International Space Station (ISS) Payload Operations Integration Center (POIC) Cadre team members. ERS integrates spacecraft command mnemonics, telemetry measurements, and command and telemetry control procedures into a standard programming language, while making use of Microsoft's Visual Studio for developing Visual Basic (VB) or C# ground operations procedures. ERS also allows for script-style user control during procedure execution using a robust graphical user input and output feature. The availability of VB and C# programmers, and the richness of the languages and their development environment, has allowed ERS to lower our "script" development time and maintenance costs at the Marshall POIC

The Next Generation of Ground Operations Command and Control; Scripting in C Sharp and Visual Basic

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