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Author Topic: Polargraphcontroller 1.1.8 Freezing
gensior
Newbie
Posts: 7
Permalink
Post Polargraphcontroller 1.1.8 Freezing
on: July 4, 2012, 10:25
Quote

Hello again.

I've got a new issue now, this time with the polargraphcontroller application. Whenever I send a command that affects the motors the program locks up. The command doesn't finish executing, it just says "BUSY: C09,3001,3010,END:etc.", for example.

Clearing the queue doesn't resolve it and new commands only stack up behind the frozen one. I've reinstalled the application on my computer (I'm running 1.1.8) and I've tried rebooting everything. I can move the servo on the gondola and perform other functions within the application just fine. But when I do anything that affects the motors...no response.

This problem started right after finishing a job. I tried loading a new image file and the program locked up. After a few seconds the motors unlocked and the gondola came crashing down.

Any ideas?

kongorilla
Pro
Posts: 385
Permalink
kongorilla
Post Re: Polargraphcontroller 1.1.8 Freezing
on: July 4, 2012, 19:41
Quote

That happens to me, too, though it started with 1.1.7. (I haven't used 1.1.8 yet). Sandy was on holiday when it started so I didn't bug him about it, and I got so used to the workaround that by the time he got back I forgot about it. I suspected it was a mismatch of firmware and controller (or config file, since I tend to copy those from previous versions), and it was my fault since no one else was complaining about it. I thought, for me, it would be fixed the next time Sandy released a big update that required me to update both. Perhaps I was wrong.

Anyway, I've found that if I hit the "upload machine spec" at the beginning of each session there's a low probability of the lockup happening. If a lockup happens, I close the controller, reset the arduino (unplug it from my computer, then plug it back in), open the controller again, make sure the serial connection indicator goes green, unpause the queue, and hit "upload the machine spec". Usually all is well for the rest of that session.

I'm not sure if this is always true, but I've observed that when the lockup occurs, the pink dot representing the gondola location is at the top left corner of the machine. I've suspected that the software thinks the gondola is out of bounds, perhaps somewhere in Scotland.

Does this match your experience, gensior?

gensior
Newbie
Posts: 7
Permalink
Post Re: Polargraphcontroller 1.1.8 Freezing
on: July 4, 2012, 20:24
Quote

Thanks, Kongorilla. I followed your procedure and I've been able to solve this issue. Looks like the trick is to "upload machine spec" at the very beginning like you mentioned. In testing it I had a case where it froze again so I can verify that it's gotten me out of this situation twice. I recommend anybody else who has a similar experience try the same and their machine will be humming along in no time.

sandy
Administrator
Posts: 1427
Permalink
sandy
Post Re: Polargraphcontroller 1.1.8 Freezing
on: July 5, 2012, 10:57
Quote

Hallo! Thanks for the help Kongorilla. I'm scratching my head a bit about this one - I wonder if it might be the same thing that MakerBlock reports.

Gensior, your first report sounds like a reset - that the machine was unresponsive for a moment, then the motors cut power. Can't be sure of course, but I've never come across a time that the motors lose power without a full reset - in fact there isn't a working "release motors" procedure in the firmware at all. Doesn't help explain it of course, but it does point to a less subtle problem, maybe power or overheating or something like that. The L293D chips _do_ have a thermal overload shutdown on them, but I'm struggling to find any descriptions of what that behaviour actually looks like.

If other commands still run through the machine ok, then that's not an issue with the communication, it's an issue with the motor driver. Kong - is your problem the same, where only the motors stopped working?

This has been an issue for me in the past, with older versions of accelstepper, but much older - it's been fixed for a year now. But in a nutshell, the problem is that the firmware is not broadcasting it's "ready" signal every 5 seconds. This means either

1) It's doing something that takes a really long time. This was the issue I had in the past, it was a timer rollover thing. It would pause for about 40 minutes then just come back to life and carry on like nothing had happened.
2) It's stuck in a loop doing something that it's impossible for it to do. Like a zeno's arrow kind of thing - it just can't ever get to the place it's meant to be.
3) It's crashed. This is kind of the least likely because a crash almost always results in a spontaneous reset.

If other commands are being accepted, then none of the above are happening, and I'm tempted to say it's a physical issue, a dry joint or something. I know that's a cop-out. And that said, if it were an issue with the motor drivers, the arduino wouldn't really care anyway. It doesn't get any feedback from the drivers, and in fact doesn't even care if the shield is not there at all. So about the only way the drivers can affect the arduino is by pulling so much power that it starves it and prompts a reset.

And if there's no reset, then I'm thinking that 1) above is happening.

I can't really see how reloading the machine spec would help - having a scan through the code, there's nothing jumping out which happens during the upload that doesn't also happen during a normal startup. That's not to say it doesn't make any difference - it's not obvious what the difference it.

Kong, re your version mismatches - I wouldn't worry about that. The new controllers have added properties to the file, but not changed or removed any, and if there's values missing then they get set to defaults, and saved into the file next time you do a save anyway.

sn

kongorilla
Pro
Posts: 385
Permalink
kongorilla
Post Re: Polargraphcontroller 1.1.8 Freezing
on: July 5, 2012, 12:12
Quote

I don't think the problem I experience is the same as Makerblock's. Mine has never happened during a drawing like his. What happens to me is I'll be setting up a drawing (load an image, change a few values), and then hit "set home". Then the machine is "busy" for longer than I've been willing to wait (minutes). The motors are powerless, and the pink position dot is in the top left corner of the machine, unmoving. I can add entries to the queue.

I don't remember if it's ever happened during a session in which the motors have previously been successfully engaged. I'll start paying closer attention.

***After 15 minutes of goofing with controller*****
I just now opened the controller, loaded an image, selected an area, and set home - "BUSY" for 10 minutes. I got impatient, tried the serial port trick mentioned on Makerblock's blog (changed to "no serial connection", unplugged usb, replugged, changed back to original COM) and then the queue started going. Unfortunately I didn't check to see if the motors engaged, but my impression was that the home command didn't happen. I was then able to give a home command that worked. Further attempts to make the lockup occur after that were unsuccessful, even after closing the controller and doing the exact same steps.

sandy
Administrator
Posts: 1427
Permalink
sandy
Post Re: Polargraphcontroller 1.1.8 Freezing
on: July 5, 2012, 14:58
Quote

I wonder what it's doing. I think I'm going to try and find a way to expose the raw console log, because that might have some interesting things in it - the machine is pretty verbose at times and that's all hidden unless you use run from the source.

sn

sandy
Administrator
Posts: 1427
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sandy
Post Re: Polargraphcontroller 1.1.8 Freezing
on: July 5, 2012, 16:59
Quote

I've just uploaded a new update that adds a pop-up console log. It won't fix any of your problems, but if you pop the console up when you start your session, the log might hold some messages that will illuminate this peculiar behaviour.

There's a link at Quick controller update for those whose problems are hanging.

kongorilla
Pro
Posts: 385
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kongorilla
Post Re: Polargraphcontroller 1.1.8 Freezing
on: July 5, 2012, 20:07
Quote

Ok, I've updated everything to 1.1.9.

It did the lockup on the first try. Here's a screenshot and the console output. After the lockup, I added a "move pen to point" command, which is still waiting its turn. The motors haven't gotten power.
Image
incoming: READY
isn't chroma key 173.0, 173.0,173.0
isn't chroma key 116.0, 116.0,116.0
isn't chroma key 193.0, 193.0,193.0
isn't chroma key 239.0, 239.0,239.0
isn't chroma key 110.0, 110.0,110.0
isn't chroma key 168.0, 168.0,168.0
isn't chroma key 228.0, 228.0,228.0
isn't chroma key 225.0, 225.0,225.0
isn't chroma key 66.0, 66.0,66.0
isn't chroma key 121.0, 121.0,121.0
isn't chroma key 152.0, 152.0,152.0
isn't chroma key 178.0, 178.0,178.0
isn't chroma key 203.0, 203.0,203.0
isn't chroma key 232.0, 232.0,232.0
isn't chroma key 231.0, 231.0,231.0
isn't chroma key 109.0, 109.0,109.0
isn't chroma key 124.0, 124.0,124.0
isn't chroma key 144.0, 144.0,144.0
isn't chroma key 158.0, 158.0,158.0
isn't chroma key 195.0, 195.0,195.0
isn't chroma key 214.0, 214.0,214.0
isn't chroma key 225.0, 225.0,225.0
isn't chroma key 143.0, 143.0,143.0
isn't chroma key 175.0, 175.0,175.0
isn't chroma key 135.0, 135.0,135.0
isn't chroma key 141.0, 141.0,141.0
isn't chroma key 142.0, 142.0,142.0
isn't chroma key 151.0, 151.0,151.0
isn't chroma key 167.0, 167.0,167.0
isn't chroma key 183.0, 183.0,183.0
isn't chroma key 213.0, 213.0,213.0
isn't chroma key 113.0, 113.0,113.0
isn't chroma key 117.0, 117.0,117.0
isn't chroma key 227.0, 227.0,227.0
isn't chroma key 142.0, 142.0,142.0
isn't chroma key 145.0, 145.0,145.0
isn't chroma key 146.0, 146.0,146.0
isn't chroma key 149.0, 149.0,149.0
isn't chroma key 136.0, 136.0,136.0
isn't chroma key 154.0, 154.0,154.0
isn't chroma key 164.0, 164.0,164.0
isn't chroma key 133.0, 133.0,133.0
isn't chroma key 77.0, 77.0,77.0
isn't chroma key 142.0, 142.0,142.0
isn't chroma key 143.0, 143.0,143.0
isn't chroma key 26.0, 26.0,26.0
isn't chroma key 148.0, 148.0,148.0
isn't chroma key 151.0, 151.0,151.0
isn't chroma key 147.0, 147.0,147.0
isn't chroma key 150.0, 150.0,150.0
isn't chroma key 147.0, 147.0,147.0
isn't chroma key 144.0, 144.0,144.0
isn't chroma key 146.0, 146.0,146.0
isn't chroma key 147.0, 147.0,147.0
isn't chroma key 114.0, 114.0,114.0
isn't chroma key 66.0, 66.0,66.0
incoming: READY
isn't chroma key 77.0, 77.0,77.0
isn't chroma key 32.0, 32.0,32.0
isn't chroma key 13.0, 13.0,13.0
isn't chroma key 17.0, 17.0,17.0
isn't chroma key 162.0, 162.0,162.0
isn't chroma key 147.0, 147.0,147.0
isn't chroma key 148.0, 148.0,148.0
isn't chroma key 148.0, 148.0,148.0
isn't chroma key 142.0, 142.0,142.0
isn't chroma key 139.0, 139.0,139.0
isn't chroma key 135.0, 135.0,135.0
isn't chroma key 134.0, 134.0,134.0
isn't chroma key 104.0, 104.0,104.0
isn't chroma key 25.0, 25.0,25.0
isn't chroma key 25.0, 25.0,25.0
isn't chroma key 28.0, 28.0,28.0
isn't chroma key 24.0, 24.0,24.0
isn't chroma key 18.0, 18.0,18.0
isn't chroma key 19.0, 19.0,19.0
isn't chroma key 153.0, 153.0,153.0
isn't chroma key 150.0, 150.0,150.0
isn't chroma key 140.0, 140.0,140.0
isn't chroma key 143.0, 143.0,143.0
isn't chroma key 137.0, 137.0,137.0
isn't chroma key 144.0, 144.0,144.0
isn't chroma key 138.0, 138.0,138.0
isn't chroma key 142.0, 142.0,142.0
isn't chroma key 24.0, 24.0,24.0
isn't chroma key 42.0, 42.0,42.0
isn't chroma key 131.0, 131.0,131.0
isn't chroma key 15.0, 15.0,15.0
isn't chroma key 124.0, 124.0,124.0
isn't chroma key 28.0, 28.0,28.0
isn't chroma key 24.0, 24.0,24.0
isn't chroma key 22.0, 22.0,22.0
isn't chroma key 17.0, 17.0,17.0
isn't chroma key 150.0, 150.0,150.0
isn't chroma key 134.0, 134.0,134.0
isn't chroma key 134.0, 134.0,134.0
isn't chroma key 135.0, 135.0,135.0
isn't chroma key 131.0, 131.0,131.0
isn't chroma key 128.0, 128.0,128.0
isn't chroma key 137.0, 137.0,137.0
isn't chroma key 144.0, 144.0,144.0
isn't chroma key 112.0, 112.0,112.0
isn't chroma key 34.0, 34.0,34.0
isn't chroma key 20.0, 20.0,20.0
isn't chroma key 125.0, 125.0,125.0
isn't chroma key 130.0, 130.0,130.0
isn't chroma key 255.0, 255.0,255.0
isn't chroma key 44.0, 44.0,44.0
isn't chroma key 32.0, 32.0,32.0
isn't chroma key 28.0, 28.0,28.0
isn't chroma key 20.0, 20.0,20.0
isn't chroma key 83.0, 83.0,83.0
isn't chroma key 35.0, 35.0,35.0
isn't chroma key 5.0, 5.0,5.0
isn't chroma key 113.0, 113.0,113.0
isn't chroma key 123.0, 123.0,123.0
isn't chroma key 129.0, 129.0,129.0
isn't chroma key 129.0, 129.0,129.0
isn't chroma key 144.0, 144.0,144.0
isn't chroma key 172.0, 172.0,172.0
isn't chroma key 33.0, 33.0,33.0
isn't chroma key 32.0, 32.0,32.0
isn't chroma key 127.0, 127.0,127.0
isn't chroma key 145.0, 145.0,145.0
isn't chroma key 227.0, 227.0,227.0
isn't chroma key 254.0, 254.0,254.0
isn't chroma key 242.0, 242.0,242.0
isn't chroma key 52.0, 52.0,52.0
isn't chroma key 24.0, 24.0,24.0
isn't chroma key 20.0, 20.0,20.0
isn't chroma key 19.0, 19.0,19.0
isn't chroma key 17.0, 17.0,17.0
isn't chroma key 18.0, 18.0,18.0
isn't chroma key 99.0, 99.0,99.0
isn't chroma key 119.0, 119.0,119.0
isn't chroma key 112.0, 112.0,112.0
isn't chroma key 114.0, 114.0,114.0
isn't chroma key 126.0, 126.0,126.0
isn't chroma key 137.0, 137.0,137.0
isn't chroma key 170.0, 170.0,170.0
isn't chroma key 235.0, 235.0,235.0
isn't chroma key 108.0, 108.0,108.0
isn't chroma key 124.0, 124.0,124.0
isn't chroma key 148.0, 148.0,148.0
isn't chroma key 158.0, 158.0,158.0
isn't chroma key 213.0, 213.0,213.0
isn't chroma key 246.0, 246.0,246.0
isn't chroma key 255.0, 255.0,255.0
isn't chroma key 153.0, 153.0,153.0
isn't chroma key 29.0, 29.0,29.0
isn't chroma key 24.0, 24.0,24.0
isn't chroma key 20.0, 20.0,20.0
isn't chroma key 16.0, 16.0,16.0
isn't chroma key 23.0, 23.0,23.0
isn't chroma key 88.0, 88.0,88.0
isn't chroma key 120.0, 120.0,120.0
isn't chroma key 112.0, 112.0,112.0
isn't chroma key 112.0, 112.0,112.0
isn't chroma key 113.0, 113.0,113.0
isn't chroma key 109.0, 109.0,109.0
isn't chroma key 124.0, 124.0,124.0
isn't chroma key 154.0, 154.0,154.0
isn't chroma key 232.0, 232.0,232.0
isn't chroma key 255.0, 255.0,255.0
isn't chroma key 255.0, 255.0,255.0
isn't chroma key 151.0, 151.0,151.0
isn't chroma key 146.0, 146.0,146.0
isn't chroma key 160.0, 160.0,160.0
isn't chroma key 231.0, 231.0,231.0
isn't chroma key 255.0, 255.0,255.0
isn't chroma key 255.0, 255.0,255.0
isn't chroma key 255.0, 255.0,255.0
isn't chroma key 71.0, 71.0,71.0
isn't chroma key 27.0, 27.0,27.0
isn't chroma key 19.0, 19.0,19.0
isn't chroma key 17.0, 17.0,17.0
isn't chroma key 100.0, 100.0,100.0
isn't chroma key 120.0, 120.0,120.0
isn't chroma key 116.0, 116.0,116.0
isn't chroma key 108.0, 108.0,108.0
isn't chroma key 105.0, 105.0,105.0
isn't chroma key 104.0, 104.0,104.0
isn't chroma key 100.0, 100.0,100.0
isn't chroma key 119.0, 119.0,119.0
isn't chroma key 131.0, 131.0,131.0
isn't chroma key 144.0, 144.0,144.0
isn't chroma key 208.0, 208.0,208.0
isn't chroma key 247.0, 247.0,247.0
isn't chroma key 255.0, 255.0,255.0
isn't chroma key 244.0, 244.0,244.0
isn't chroma key 250.0, 250.0,250.0
isn't chroma key 255.0, 255.0,255.0
isn't chroma key 255.0, 255.0,255.0
isn't chroma key 253.0, 253.0,253.0
isn't chroma key 255.0, 255.0,255.0
isn't chroma key 254.0, 254.0,254.0
isn't chroma key 91.0, 91.0,91.0
isn't chroma key 22.0, 22.0,22.0
isn't chroma key 19.0, 19.0,19.0
isn't chroma key 18.0, 18.0,18.0
isn't chroma key 33.0, 33.0,33.0
isn't chroma key 123.0, 123.0,123.0
isn't chroma key 126.0, 126.0,126.0
isn't chroma key 112.0, 112.0,112.0
isn't chroma key 14.0, 14.0,14.0
isn't chroma key 9.0, 9.0,9.0
isn't chroma key 46.0, 46.0,46.0
isn't chroma key 84.0, 84.0,84.0
isn't chroma key 114.0, 114.0,114.0
isn't chroma key 127.0, 127.0,127.0
isn't chroma key 142.0, 142.0,142.0
isn't chroma key 148.0, 148.0,148.0
isn't chroma key 181.0, 181.0,181.0
isn't chroma key 218.0, 218.0,218.0
isn't chroma key 253.0, 253.0,253.0
isn't chroma key 255.0, 255.0,255.0
isn't chroma key 253.0, 253.0,253.0
isn't chroma key 252.0, 252.0,252.0
isn't chroma key 255.0, 255.0,255.0
isn't chroma key 253.0, 253.0,253.0
isn't chroma key 247.0, 247.0,247.0
isn't chroma key 247.0, 247.0,247.0
isn't chroma key 220.0, 220.0,220.0
isn't chroma key 26.0, 26.0,26.0
isn't chroma key 23.0, 23.0,23.0
incoming: READY
isn't chroma key 16.0, 16.0,16.0
isn't chroma key 100.0, 100.0,100.0
isn't chroma key 22.0, 22.0,22.0
isn't chroma key 135.0, 135.0,135.0
isn't chroma key 133.0, 133.0,133.0
isn't chroma key 87.0, 87.0,87.0
isn't chroma key 7.0, 7.0,7.0
isn't chroma key 71.0, 71.0,71.0
isn't chroma key 90.0, 90.0,90.0
isn't chroma key 66.0, 66.0,66.0
isn't chroma key 102.0, 102.0,102.0
isn't chroma key 125.0, 125.0,125.0
isn't chroma key 138.0, 138.0,138.0
isn't chroma key 153.0, 153.0,153.0
isn't chroma key 158.0, 158.0,158.0
isn't chroma key 163.0, 163.0,163.0
isn't chroma key 196.0, 196.0,196.0
isn't chroma key 231.0, 231.0,231.0
isn't chroma key 254.0, 254.0,254.0
isn't chroma key 255.0, 255.0,255.0
isn't chroma key 247.0, 247.0,247.0
isn't chroma key 236.0, 236.0,236.0
isn't chroma key 239.0, 239.0,239.0
isn't chroma key 240.0, 240.0,240.0
isn't chroma key 241.0, 241.0,241.0
isn't chroma key 245.0, 245.0,245.0
isn't chroma key 18.0, 18.0,18.0
isn't chroma key 16.0, 16.0,16.0
isn't chroma key 15.0, 15.0,15.0
isn't chroma key 72.0, 72.0,72.0
isn't chroma key 25.0, 25.0,25.0
isn't chroma key 16.0, 16.0,16.0
isn't chroma key 135.0, 135.0,135.0
isn't chroma key 125.0, 125.0,125.0
isn't chroma key 10.0, 10.0,10.0
isn't chroma key 24.0, 24.0,24.0
isn't chroma key 123.0, 123.0,123.0
isn't chroma key 124.0, 124.0,124.0
isn't chroma key 90.0, 90.0,90.0
isn't chroma key 117.0, 117.0,117.0
isn't chroma key 126.0, 126.0,126.0
isn't chroma key 144.0, 144.0,144.0
isn't chroma key 155.0, 155.0,155.0
isn't chroma key 160.0, 160.0,160.0
isn't chroma key 188.0, 188.0,188.0
isn't chroma key 153.0, 153.0,153.0
isn't chroma key 189.0, 189.0,189.0
isn't chroma key 225.0, 225.0,225.0
isn't chroma key 246.0, 246.0,246.0
isn't chroma key 255.0, 255.0,255.0
isn't chroma key 255.0, 255.0,255.0
isn't chroma key 230.0, 230.0,230.0
isn't chroma key 222.0, 222.0,222.0
isn't chroma key 207.0, 207.0,207.0
isn't chroma key 218.0, 218.0,218.0
isn't chroma key 228.0, 228.0,228.0
isn't chroma key 14.0, 14.0,14.0
isn't chroma key 11.0, 11.0,11.0
isn't chroma key 33.0, 33.0,33.0
isn't chroma key 17.0, 17.0,17.0
isn't chroma key 15.0, 15.0,15.0
isn't chroma key 26.0, 26.0,26.0
isn't chroma key 136.0, 136.0,136.0
isn't chroma key 121.0, 121.0,121.0
isn't chroma key 11.0, 11.0,11.0
isn't chroma key 16.0, 16.0,16.0
isn't chroma key 15.0, 15.0,15.0
isn't chroma key 145.0, 145.0,145.0
isn't chroma key 102.0, 102.0,102.0
isn't chroma key 117.0, 117.0,117.0
isn't chroma key 131.0, 131.0,131.0
isn't chroma key 140.0, 140.0,140.0
isn't chroma key 165.0, 165.0,165.0
isn't chroma key 168.0, 168.0,168.0
isn't chroma key 166.0, 166.0,166.0
isn't chroma key 187.0, 187.0,187.0
isn't chroma key 174.0, 174.0,174.0
isn't chroma key 189.0, 189.0,189.0
isn't chroma key 229.0, 229.0,229.0
isn't chroma key 255.0, 255.0,255.0
isn't chroma key 255.0, 255.0,255.0
isn't chroma key 255.0, 255.0,255.0
isn't chroma key 254.0, 254.0,254.0
isn't chroma key 246.0, 246.0,246.0
isn't chroma key 201.0, 201.0,201.0
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incoming: READY
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incoming: READYisn't chroma key 132.0, 132.0,132.0

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incoming: READY
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incoming: READY
incoming: READY
incoming: READY
incoming: READY
regenerating preview queue.
queue clicked.
Dispatching command: C02,0.3,END
Last command:C02,0.3,END:310012058
regenerating preview queue.
incoming: Executing command.
incoming: MEMORY,597,END
incoming: Changed Pen width to 0.30mm
incoming: READY
Dispatching command: C31,600.0,END
Last command:C31,600.0,END:3221029769
regenerating preview queue.
incoming: Executing command.
incoming: New max speed: 600.00
incoming: READY
Dispatching command: C32,400.0,END
Last command:C32,400.0,END:149507342
regenerating preview queue.
incoming: Executing command.
incoming: New acceleration: 400.00
incoming: READY
Dispatching command: C09,2757,2757,END
Last command:C09,2757,2757,END:3041450201
regenerating preview queue.
regenerating preview queue.

sandy
Administrator
Posts: 1427
Permalink
sandy
Post Re: Polargraphcontroller 1.1.8 Freezing
on: July 5, 2012, 22:35
Quote

Right. Got it. Not the fix, but at least it's just happened to me now. Any idea what prompts it? Seems intermittent?

sn

kongorilla
Pro
Posts: 385
Permalink
kongorilla
Post Re: Polargraphcontroller 1.1.8 Freezing
on: July 5, 2012, 23:32
Quote

Well, I got used to always doing an "upload machine spec" as a good hygiene habit when I started a session, because for me the problem rarely happens after that. Now that I've been trying to make it happen it's been fairly consistent, as long as the motors haven't been engaged before. Once communication is successful, I don't have to worry much. Once a lockup happens I have to unplug, or when I start a new controller session a serial connection won't happen.

I just did another test:

1. First without "upload machine spec" and everything the same as my previous post. When I set home, the eternal BUSY happened.

2. Quit controller. Unplugged USB. Plugged back in. Started controller. Uploaded machine spec. Set up the picture as per test 1 and "set home", which worked fine, no log jam.

3. Quit controller (no unplugging, motors still powered and locked from previous session). Started the controller and performed test 1 again (no upload machine spec). Homing worked fine.

That fits my experience since I started using 1.1.7. I wouldn't be surprised if it turned out that the upload workaround I've been using could be replaced by sending other commands, it just always worked for me so I didn't look into alternatives.

sandy
Administrator
Posts: 1427
Permalink
sandy
Post Re: Polargraphcontroller 1.1.8 Freezing
on: July 6, 2012, 00:52
Quote

Have just committed a fix that seems to have solved this problem for me - would be grateful if you guys could give it a shot.

Not convincingly fixed, not very clear what exactly was happening, or rather how. The first two characters of the C09 command were being corrupted, but that was just a symptom of something else going wrong (bad, or non- commands are handled safely). I've resolved this for now by setting maximum-length defaults for the static inString and the four parameter values.

Let me know if this works for you.

thanks for being patient!
sn

sandy
Administrator
Posts: 1427
Permalink
sandy
Post Re: Polargraphcontroller 1.1.8 Freezing
on: July 6, 2012, 00:53
Quote

Oh, it's in the repo at http://code.google.com/p/polargraph/source/browse/embedded/trunk/polargraph_server_a1.ino

kongorilla
Pro
Posts: 385
Permalink
kongorilla
Post Re: Polargraphcontroller 1.1.8 Freezing
on: July 6, 2012, 01:28
Quote

So far, so good! Not one instance of the problem after about 5 tries. Is it recklessly optimistic to say, "Yippeee!"?

gensior
Newbie
Posts: 7
Permalink
Post Re: Polargraphcontroller 1.1.8 Freezing
on: July 6, 2012, 05:45
Quote

My machine's busy at the moment, but I'll give it a try once it's free. To answer your question about the freezing:

The machine started freezing after I tried loading a large image (about 30MB). The program became unresponsive, I restarted it and chose a serial port again, the motors unlocked, etc. After that, the controller would always go "BUSY" whenever the motors needed to be moved, no matter how many times I restarted it.

I've since used the "upload config" trick to get it to behave normally, and I'm using smaller images to avoid unresponsive periods from the program.

Thanks for the software update. I'll let you know if I find more instances of the program freezing. I'm sure we'll figure it out eventually.

sandy
Administrator
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sandy
Post Re: Polargraphcontroller 1.1.8 Freezing
on: July 6, 2012, 09:58
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Hm, once is once too many really, it needs to be reliable.

The controller grinding to a halt because of a large image, or a complex vector is normal - unless it's actually crashed and run out of memory, or is in a runaway state then it will eventually come back to life, and pretend that nothing happened.

But, it shouldn't ever really affect the connected machine. The controller and the arduino are actually very loosely coupled and the command set is pretty sparse - so there isn't much room for subtle behaviour in the commands themselves. I think this is a memory problem on the arduino. Certainly, when I change the length of some of the string variables in the sketch, the first two characters of the C09 command change - so it looks like variable values being overwritten by some other values. I haven't managed to make it break again, but please keep an eye on it and let me know if it's misbehaving.

One thing I noticed, was that of the three commands that are automatically loaded on startup, mine was C32,400.0,END - it's the set acceleration command. This crashed the next C09 command every time. If I upped the speed to 4000.0 (or even 1000.0) then it worked ok. Something to do with the length of the first parameter.

Well! Even if that's it not fixed, we've got a console out of it, and I've been meaning to do that for a while.

sn

sandy
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Posts: 1427
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sandy
Post Re: Polargraphcontroller 1.1.8 Freezing
on: July 6, 2012, 10:52
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Have merged the "fixed" firmware into the latest zip (v1.1.9). This doesn't affect the polarshield or mega versions.

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