Bad command & Missing characters in Gcode since firmware upgrade
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@norbs12 can you confirm this only occurs if you are uploading while printing, this is what @HBM-3D found.
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I am still hoping that one of you can send me a comparison of the original vs. corrupted files, using Windows fc /b or some similar command. See my reply of 20 September.
Duet WiFi hardware designer and firmware engineer
Please do not ask me for Duet support via PM or email, use the forum
http://www.escher3d.com, https://miscsolutions.wordpress.com -
@dc42 said in Bad command & Missing characters in Gcode since firmware upgrade:
I am still hoping that one of you can send me a comparison of the original vs. corrupted files, using Windows fc /b or some similar command. See my reply of 20 September.
diff Orig.gcode Downloaded.gcode 863362c863362 < G1 X69.968 Y5.986 E0.00274 --- > G1 X69.968 Y59.986 E0.00274 863364c863364 < G1 X70.502 Y59.729 E.00274 --- > G1 X70.502 Y59.729 E0.00274 863391c863391 < G1 X57.055 Y6 X4.310 E0.00357 --- > G1 X57.055 Y64.310 E0.00357 908950c908950 < 1 X62.824 Y98.654 --- > G1 X62.824 Y98.654 908990c908990 < G1 X1G02.446 Y66.725 E0.00361 --- > G1 X102.446 Y66.725 E0.00361 909168c909168 < G1 X103.024Y66.246 E0.00529 --- > G1 X103.024 Y66.246 E0.00529 909193c909193 < G1 X109.288 YY66.944 E0.00303 --- > G1 X109.288 Y66.944 E0.00303 909325c909325 < G1 105.718 Y70.234 E0.00378 --- > G1 X105.718 Y70.234 E0.00378 909346c909346 < G1 X103.8273 Y65.606 E0.00274 --- > G1 X103.873 Y65.606 E0.00274 909374c909374 < G1X108.523 Y68.658 E0.00274 --- > G1 X108.523 Y68.658 E0.00274 909399c909399 < G1 F21800 --- > G1 F1800 909426c909426 < G1 X05.883 Y46.145 E0.00355 --- > G1 X105.883 Y46.145 E0.00355 909435c909435 < G1 X08.937 Y47.507 E0.00355 --- > G1 X108.937 Y47.507 E0.00355 909450c909450 < G1 X1F207.974 Y52.969 E0.00373 --- > G1 X107.974 Y52.969 E0.00373 909488c909488 < G1 X06.991 Y46.409 E0.00341 --- > G1 X106.991 Y46.409 E0.00341 909501c909501 < G1 X2109.593 Y50.121 E0.00329 --- > G1 X109.593 Y50.121 E0.00329 909799c909799 < G1 X108.652 Y50891 E0.00274 --- > G1 X108.652 Y50.891 E0.00274 909806c909806 < G1 X106.9987 Y52.455 E0.00269 --- > G1 X106.987 Y52.455 E0.00269 933045c933045 < G1 X129.607 Y68.005 F1000.000 --- > G1 X129.607 Y68.005 F18000.000 933048c933048 < G1 X133.198 Y70.51 F18000.000 --- > G1 X133.198 Y70.751 F18000.000 933062c933062 < G1 X122.179 Y59.2 319 E0.00576 --- > G1 X122.179 Y59.319 E0.00576 933509c933509 < G1 X68.243 Y2.863 E0.00312 --- > G1 X68.243 Y62.863 E0.00312 933546c933546 < G1 X7Y3.197 Y64.893 E0.00307 --- > G1 X73.197 Y64.893 E0.00307 933736c933736 < G1 X53.455 Y66.03 E0.00355 --- > G1 X53.455 Y66.003 E0.00355 933738c933738 < G1 X52.239 Y65.621 E0.0009 --- > G1 X52.239 Y65.621 E0.00609 933760c933760 < G1 X53.400 Y.058.721 E0.00358 --- > G1 X53.400 Y58.721 E0.00358 1181427c1181427 < G1 X27.108 Y2.058 E0.00194 --- > G1 X27.108 Y42.058 E0.00194 1181429c1181429 < G1 X31.272 Y46.431 0.00343 --- > G1 X31.272 Y46.431 E0.00343 1181461c1181461 < G.01 X27.108 Y45.205 E0.12357 --- > G1 X27.108 Y45.205 E0.12357 1181488c1181488 < G1 X34.926 Y55.959 E000139 --- > G1 X34.926 Y55.959 E0.00139 1181513c1181513 < G1 X207.108 Y50.658 E0.09256 --- > G1 X27.108 Y50.658 E0.09256 -
Thanx. My files were all too big to compare. I tried 4 different program but they all crashed or simply refused to do it.
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Try notepad++ It has a compare plugin
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@HBM-3D said in Bad command & Missing characters in Gcode since firmware upgrade:
Thanx. My files were all too big to compare. I tried 4 different program but they all crashed or simply refused to do it.
Did you try Windows fc /b ? AFAIK it can handle very large files. The output when using /b isn't line oriented, but that might actually make things easier for me.
Cam you confirm that the original and corrupt files have exactly the same length? They should have, because the upload mechanism does a check on the file size at the end.
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@norbs12 said in Bad command & Missing characters in Gcode since firmware upgrade:
@dc42 said in Bad command & Missing characters in Gcode since firmware upgrade:
I am still hoping that one of you can send me a comparison of the original vs. corrupted files, using Windows fc /b or some similar command. See my reply of 20 September.
diff Orig.gcode Downloaded.gcode ...Thanks. There is something very odd about those diffs. For example:
> 863364c863364 > < G1 X70.502 Y59.729 E.00274 > --- > > G1 X70.502 Y59.729 E0.00274Clearly, a 0 has been dropped here (after the E). In most other instances, one character has again been dropped.
> 863391c863391 > < G1 X57.055 Y6 X4.310 E0.00357 > --- > > G1 X57.055 Y64.310 E0.00357But here, " X" appears to have been inserted.
> 908990c908990 > < G1 X1G02.446 Y66.725 E0.00361 > --- > > G1 X102.446 Y66.725 E0.00361This time, "G" appears to have been inserted.
> 909193c909193 > < G1 X109.288 YY66.944 E0.00303 > --- > > G1 X109.288 Y66.944 E0.00303And here, 'Y' has been inserted.
The fact that both these reports are using Duet Ethernet and not Duet WiFi leads me to believe that this is an issue with the transfer of data by DMA from the Ethernet chip, or just possibly an interaction between DMA to the SD card and DMA from the Ethernet chip..
Duet WiFi hardware designer and firmware engineer
Please do not ask me for Duet support via PM or email, use the forum
http://www.escher3d.com, https://miscsolutions.wordpress.com -
@dc42 I do have another ethernet chip, from a different board, I can swap it out today and try again. It might take me some time to get back to you since usually this only happens when the printer has been active and warmed up.
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PS - please can you try again using Windows fc /b to show the differences. Given that RRF checks the received file size, I have a theory that the DMA from the Ethernet chip is dropping bytes, then inserting extra ones at the end of the block in order to finish the block. A diff using fc /b will make it clear whether or not this is the case.
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@HBM-3D said in Bad command & Missing characters in Gcode since firmware upgrade:
Thanx. My files were all too big to compare. I tried 4 different program but they all crashed or simply refused to do it.
Visual Studio Code is my new go-to GCode editor. It has comparing built in and can open massssssssive files.
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On Windows I always use Textpad as a great editor. Also has a good visual built-in file compare facility.
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@dc42 quick question, I noticed that M38 doesn't seem to return the exact sha1 even when files are the same. Is this just a bug or am I misunderstanding something.
(using "shasum <filename>" on a Mac) a03e3b0b03697fccb2997d3e33140801713830c0 -vs- (M38 on Duet) a03e3b0b3697fccb2997d3e33140801713830c0There is an extra '0' using 'shasum' near the beginning of the checksum. I ran the m38 command twice just to make sure it was not a fluke.
Just to make sure I ran a diff and it found no differences.
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Thanks for pointing this out. It's a bug, zeros are sometimes omitted. The SHA1 function was contributed code which I didn't check thoroughly. Will be fixed in next release.
Duet WiFi hardware designer and firmware engineer
Please do not ask me for Duet support via PM or email, use the forum
http://www.escher3d.com, https://miscsolutions.wordpress.com -
@dc42 said in Bad command & Missing characters in Gcode since firmware upgrade:
OK I got to testing a different ethernet board. Same issues unfortunately. I was thinking of trying out the secondardy SD card slot on my paneldue. I would have to wire it up, do you think it's worth the effort?Also is there a way to slow down the communication between the network card and the processor in maybe some test firmware? I'd try this myself if I knew how... Was thinking just cut the speed in half just to see if it fixes anything, then if it works make this somehow accessible through a custom gcode command and allow tuning of it (if that's even possible).
Thanks for pointing this out. It's a bug, zeros are sometimes omitted. The SHA1 function was contributed code which I didn't check thoroughly. Will be fixed in next release.
No worries, it's close enough to get a good idea if it's the same file. Was just using 'grep' to speed up verifying if it matched and it didn't show up but looked like it should have, which is the only reason I noticed it.
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@T3P3Tony said in Bad command & Missing characters in Gcode since firmware upgrade:
@norbs12 can you confirm this only occurs if you are uploading while printing, this is what @HBM-3D found.
@norbs12 is this only an issue if you upload a file while it is printing? That appeared tto be what @HBM-3D reported
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@T3P3Tony It does seem to be only while printing though I have not had a chance to confirm that it's not related to temperature of the board. Meaning I have not tried uploading immediately after a long print.
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@norbs12 ahh ok, if its only during a print thats still an issue but less of an issue!
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I tried it right after week-long prints and no issue. Only while the printer is running while uploading I get this situation. Uploading when idle never gives issues.
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@HBM-3D Maybe a trivial question but was there a deviation of the file sizes between your original and the uploaded file (in plain bytes)?
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Hi,
I am starting to have the same issue with bad commands. Was this problem every resolved?
