1. Current Profile PE  Shutter (CRB)
Anomaly A1
CRB
PE  MMB Response
Current Profile PE  Shutter (CRB) PE
Queue
DIB
MMB S S S S
SMCS / CIA
PE  MMB Request
Failure Mechanism
TMax,Shutter = 150 ms
Response: TMax,Shutter + TMax,MMB > 100 ms
 Timeout
Measures
All timeouts  500 ms
Hang-up avoided by clearing of pending MMB response before new request
01:00
5/30/2018

2. Crashes C1 & C2 (1) Failure Mechanism Image data transferred to DM
Program, Control Image
UDPs Data Data
PE Memory Banks (RAM)
Program Memory PM
Data Memory DM
Image Memory IM
Failure Mechanism
Image data transferred to DM
DisableCCD parameter not introduced into size calculation
 Override of Control Data
01:00
5/30/2018

3. Crashes C1 & C2 (2) Measure Additional Safety Measures
Change DM  IM within OCL
Additional Safety Measures
OCL image array must be located in IM
Introduce DisableCCD parameter into image size calculation
Check array bounds against calculated image size
- Same measure for RTL function Reorder()
Data source (DIB channel) switched off before leaving RTL function
- Dual-imaging now specific call (atomic function)
01:00
5/30/2018

4. Further Improvements Further Improvements in Version 7.14/7.15
In function Encode()
- Additional Semaphore
- Limitation of internal loop
Check of MMB transfer block size != 0 (0 = full MMB capacity!)
4 modifications of UDP manager
- Command counter handling during UDP decompression
- Error counter handling
- Compressed upload after manager reset
- Overall waiting on UDP termination
01:00
5/30/2018

5. Change Record (HistoryDPU.txt)
Version 7.14 (LL 1.4, OCL 3.x), (A1/C1/C2)
(1) Fix: MMBRead(): Clears event before requesting status
(1) Fix: All DIB timeouts set to >= 500ms (TUNIT)
(2a) Fix: CRBToRAM(): Checks pointers for IM and size
(2a) Fix: GetLines()/GetPixels(): Return 0 if uDisCCD set
(2a) Fix: Reorder(): Checks pointers for IM and size (Plausible())
(2a) Chg: CRBDual(): Is now a single call (2 x 4 parameters) due to inconsistency with OCL parameters when leaving sequential functions
(2b/c) Fix: DIBResult(): Stops CRB data throughput (PrepareDIB())
(2e) Fix: FromMMB()/ToMMB: Now check for size
(3a/b) Fix: Encode(): Refinement loop limited
(3d) Fix: Encode(): Semaphore protected
(7) Fix: UDPMan.c: Failed compressed upload after manager reset
(8) Chg: UDPMan.c: Overall waiting on UDP termination limited
Fix: UDPMan.c: Error counting missing on some error messages
Chg: UDPMan.c: Manager command counter handling on errors during UDP decompression
Version 7.15 (LL 1.4, OCL 3.x),
New: OCL message I/F for PCM alarm as in <= 7.04, but w/o timeout due to timing constraints for PCM alarms (100 Hz)
01:00
5/30/2018

6. Open Problem Areas DPU Crashes Increased DIB Serial Channels Timeouts
What is meant: DIB Crashes?
Reproducible on ground?
Increased DIB Serial Channels Timeouts
Changed 100 ms  500 ms
Change only affects error handling No change for regular operations
Time Jumps (8 sec)
Related to Time Commanding?
If yes: Are commands sent within allowed slots (1-7)?!
If not: Pure OSIRIS S/W problem  needs further investigation
SSMM Problem (Missing 2 Bytes)
Spurious phenomenon in middle of image transmission
OSIRIS I/F organization is 32-bit, SSMM is 8-bit?!
Following packet again ok
NCR-160 (SMCS anomaly, 4 nc-pins)?!
01:00
5/30/2018

7. OSIRIS Wavelet Coding Performance
01:00
DSA = Dynamic Storage Allocation
5/30/2018

8. Image Library Functions
Available Functions
void ImgAdd (void &pImgResult, void &pImg1, void &pImg2);
void ImgSub (void &pImgResult, void &pImg1, void &pImg2);
void ImgMult (void &pImgResult, void &pImg2, float fMult, float fOff);
UNS32 ImgMean (void &pImg);
void ImgHist (UNS32 &puHist[], void &pImg);
UNS32 ImgShift (void &pImgResult, void &pImg, UNS32 uLineLength,
long lXShiftWidth, long lYShiftWidth);
UNS32 ImgBright (void &pImage, long lLineLength, tsCoord &Point);
UNS32 ImgBin (void &pImgResult, void &pImg, long lLineLength,
long lBinX, long lBinY);
UNS32 ImgCrop (void &pImgResult, void &pImg, long lLineLength,
long lLeft, long lTop, long lRight, long lBottom);
UNS32 ImgRemoveBad (void &pImg, long lLineLength,
long lLeft, long lTop, UNS32 &puBadPixels[]);
To be implemented
? Spec. RO-RIS-MPAE-SP-015/D
? Rotation
? Filtering (5x5 neighborhood)
? Others
01:00
5/30/2018