Ground Support Equipment(GSE) Software Tzu-Te Wang NCKU UCB Tohoku GSE Software, T. T. Wang 1
Software Architecture User I/F (USER to S/W) SOH Decoder CMD Encoder Upper Level Queue Java Software I/F (S/W to S/W) Queue Writer/Reader Lower Level Interface to ISUAL Software I/F MS C (S/W to H/W) Electrical test GSE NCKU UCB Tohoku GSE Software, T. T. Wang 2
Software Flow diagram(1/3) Command packets STOL Procedures Script Files test 1. PRC JAVA STOL Translator GSE 004. jar DEBUG Window Involved CMD Encoder GSE 008. jar Compiler. class Interpreter Translator STOL Window (Display/Edit UCB Script) NCKU UCB Tohoku NSPO Procedure Script File test 1. NSPO Window (Display NSPO Script Format) GSE Software, T. T. Wang 3
Software Flow diagram(2/3) House Keeping Data RS 422 Board SOH Display SOH. class Ap. ID=0 x 71 D Ap. ID=0 x 71 C Query meaning of value for specified data field UCB Serial I/O Bridge SOH. EXE JAVA SOH Decoder GSE 006. jar Queue Pickup value from data file NCKU UCB Tohoku SOH Raw Data File SOH. db GSE Software, T. T. Wang 4
Software Flow diagram(3/3) Commands Packets User Java Classes I_HV_MAYI. class : RS 422 Board NSPO Command Script File ‘nspo 002. txt’ Invoke method to handle parameterizes in each command packet JAVA CMD Encoder GSE 008. jar UCB Serial I/O Bridge CMD. EXE Queue CMD Raw Data File CMD. db Fill values in raw data file NCKU UCB Tohoku GSE Software, T. T. Wang 5
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. NCKU UCB Tohoku GSE Software, T. T. Wang 6
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. NCKU UCB Tohoku GSE Software, T. T. Wang 7
User Interface NCKU UCB Tohoku GSE Software, T. T. Wang 8
User Interface(3/4) • CMD grabbing U/I – Use text box for directly input script name. – Use File-Open to choose script from filelist/folder. – For example • Use button ‘ 28 V’ to enable 28 volts power output. • Use button ‘PPS’ to start pulse-per-second signal. NCKU UCB Tohoku GSE Software, T. T. Wang 9
User Interface NCKU UCB Tohoku GSE Software, T. T. Wang 10
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. NCKU UCB Tohoku GSE Software, T. T. Wang 11
User Interface NCKU UCB Tohoku GSE Software, T. T. Wang 12
Software Interface(1/2) NSPO Script GPS Script SOH Display CMD. java TPA. java SOH. java Software Interface CMD Queue CMD. EXE NCKU UCB Tohoku ISUAL Serial I/O SOH Queue RS 422 SOH. EXE H/W driver GSE Software, T. T. Wang 13
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. NCKU UCB Tohoku GSE Software, T. T. Wang 14
Current Status • CMD encoder can accept NSPO script and generate output (CCSDS packets, define in 8564 x 7) 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 x 7) to SOH queue. And SOH decoder can read the queue to display the house-keeping data on screen. NCKU UCB Tohoku GSE Software, T. T. Wang 15
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 16
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