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Opened 9 years ago

Closed 9 years ago

#245 closed defect (fixed)

With CMOSIS20, occasional frame corruption after rebooting of board

Reported by: Suren A. Chilingaryan Owned by: Michele Caselle
Priority: major Milestone:
Component: UFO Camera Version:
Keywords: Cc: Matthias Balzer, Suren A. Chilingaryan, Michele Caselle, Matthias Vogelgesang

Description

It seems there is a data corruption with frame.sh from time to time. Here just an example of the problematic data. Just see one line is repeated 2 times.
00000FB0 84 30 08 82 │ 08 7F E0 07 │ 20 08 81 00 │ 85 40 08 83
00000FC0 00 00 C0 80 │ 00 00 7D 00 │ 08 7F E0 07 │ 20 08 81 00
00000FD0 85 40 08 83 │ 08 80 F0 07 │ 30 08 82 10 │ 86 50 08 84
00000FE0 00 00 C0 80 │ 00 00 7E 00 │ 08 80 F0 07 │ 30 08 82 10
00000FF0 86 50 08 84 │ 08 81 00 08 │ 40 08 83 20 │ 87 60 08 85
00001000 86 50 08 84 │ 08 81 00 08 │ 40 08 83 20 │ 87 60 08 85
00001010 00 00 C0 80 │ 00 00 7F 00 │ 08 81 00 08 │ 40 08 83 20
00001020 87 60 08 85 │ 08 82 10 08 │ 50 08 84 30 │ 88 70 08 86

It does not happen always, but seems to happen always at the same
address. Also when it works, it seems there is a 16 bytes of padding before the header:

00000000 00 00 00 00 │ 00 00 00 00 │ 00 00 00 00 │ EF BE AD DE

Michele have suggested that "to switch off/on the board because some time the problem is that the firmware is not loaded correctly inside fpga. I don't know why but I had seen another time in my office". Indeed that helps. After I have restarted the board, I have not seen the problem any more, but at least we need to detect such corruption in the reset script and suggest the user to reboot the camera.

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Change History (3)

comment:1 Changed 9 years ago by Suren A. Chilingaryan

Summary: With CMOSIS, occasional frame corruption after rebooting of boardWith CMOSIS20, occasional frame corruption after rebooting of board

comment:2 Changed 9 years ago by Suren A. Chilingaryan

I do see the repeating rows on UFO5 camera now as well

comment:3 Changed 9 years ago by Suren A. Chilingaryan

Resolution: fixed
Status: newclosed

Seems fixed by Uros February 26, 2016

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as closed The owner will remain Michele Caselle.
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