Thanks a lot! This 100% confirms the bug is in the processor. You have the Z revision, I have the Y revision. (So it is actually ST Microelectronics who is at fault here, not seeed )
I still have a few things to fix in the app - I think it might still crash if you press “save” or “bmp”. I’ll post a new version when I’ve fixed those.
Having the same issues myself. Images from the mainfirmware save fine, as do files, but not in the logic analyzer. Have the latest one from your website, and have also just done a test again after a format and same again.
For me it says that file was written sucesfully, but it is not readable for me either. I can see it on quad disk, see the filename, filesize, but can’t read/copy it.
Apparently Windows, usually so ignorant of filename case-sensitivity, refuses to read lower-case filenames from a FAT12 partition. I guess it is correct behaviour per the spec, but didn’t notice the problem as the lower-case files worked fine on Linux.
Found a ‘bug’, but its really only present during dumb user interaction
If you hit ‘save file’ while its still filling the buffer, it will start saving the file blocking until the buffer reaches 100%. It then reports written succesfully, but if you then press ‘bmp’ it starts saving, then crashes and produces a streaky LCD…
Not really an operational issue - but maybe it might be worth making it stop filling the buffer if the user hits ‘save file’ ?
Hmm, I can’t repeat your issue. Both BMP and VCD save fine even when the capture is still running. When did you buy your DSO Quad (maybe it is the processor revision issue again)?
It should be perfectly capable of capturing data while saving at the same time. But saving the VCD takes a long time because the write speed to the USB disc is only 25kB/s.
Hmm… I was able to reproduce it pretty consistently last night but today it doesn’t play ball.
Let me keep investigating.
And I bought mine via a Seeed reseller in January, however it might be as old as August 2011 stock though. Hard to tell really I guess. Do the serial numbers correlate in anyway ?