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Author Topic: Max SD file size / length?
pixelbot2
Newbie
Posts: 3
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Post Max SD file size / length?
on: August 27, 2016, 12:37
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Hi,
Anyone know what the maximum file size or length is that we can draw from SD card? I have one which is 130,000 lines long which is about 2500Kb but the polargraph won't 'see' this file when selecting a draw file?
Cheers for any pointers.
sandy
Administrator
Posts: 1317
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sandy
Post Re: Max SD file size / length?
on: August 27, 2016, 13:13
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There isn't a limit set in the firmware, and the machine also doesn't do any kind of length check when building the list of files on the card.

So what you mean is that when you do "draw from sd", then your file doesn't show up in the list when you cycle through the files?

The machine dumps out a full directory listing when it first turns on. If you have the controller open, pop up the debug console (ctrl+c), and press reset on your machine, and you'll see a listing whiz by (I think). Check to see if your file is in that list.

Sn
kongorilla
Pro
Posts: 362
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kongorilla
Post Re: Max SD file size / length?
on: August 27, 2016, 21:56
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The file's name has to be 8 characters or less, and no unusual characters. I can't remember what happens when you break that rule, but maybe it doesn't list the file? Possibly this is the problem, not the size?
pixelbot2
Newbie
Posts: 3
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Post Re: Max SD file size / length?
on: August 28, 2016, 09:21
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Hi Both,
Many thanks, the file was named Art2.txt but renaming to big.txt seems to have fixed things 🙂
Also, pressing ctrl c brings up a grey 'Queue clicked' window on the input screen which doesn't show the bedug code - is there perhaps another way to invoke debug?
Ta
sandy
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Posts: 1317
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sandy
Post Re: Max SD file size / length?
on: August 28, 2016, 09:37
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Yep, that's the debug console. It shows the raw output of the communications with the Polargraph machine, so you'll see the regular READY... statements coming through from it, as well as the filelisting dump when it first powers up.

sn
pixelbot2
Newbie
Posts: 3
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Post Re: Max SD file size / length?
on: August 28, 2016, 11:00
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Thanks Sandy, I got the debug working - very useful. I was having mixed results with the files but then tried swapping SD cards from a Toshiba 512mb to a Fuji 1gb which so far seems to have made things more reliable.
Thanks again for the help - after a few years off I'm up and drawing again 🙂
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