Mid flight TX reboot
- FDR
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06 Jun 2013 05:43 #10629
by FDR
Replied by FDR on topic Mid flight TX reboot
Would it be better to reset and reinitialize the CYRF?
Or then would it fall out of sync?
Or then would it fall out of sync?
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- PhracturedBlue
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06 Jun 2013 13:33 #10640
by PhracturedBlue
Replied by PhracturedBlue on topic Mid flight TX reboot
Yes, reinitialization cannot be done in the time we have left. Adding the ability to do so while maintaining sync would make the code a lot more complex, and I am loathe to do so if there are any other options available.
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- FDR
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06 Jun 2013 13:59 #10642
by FDR
Replied by FDR on topic Mid flight TX reboot
...just what I was afraid.
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- dehalo
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06 Jun 2013 20:05 #10650
by dehalo
Replied by dehalo on topic Mid flight TX reboot
My Devo F4 (with stock FM obviously) reliably rebinds with a fixed ID Ladybird after a switch off. My Devo 7E (with Deviation 3.0) does not - in the same environment.
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- notyet
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12 Jun 2013 19:26 - 12 Jun 2013 20:01 #10870
by notyet
Replied by notyet on topic Mid flight TX reboot
I'm aware of the disclaimer and inherent unsafety of RC models in general but should reports of the reboot be viewed as a reason not to use deviation on models that don't crash well?
I love Deviation and appreciate the work here- just trying to determine if anyone has a sense about the severity of this issue.
...and is is strictly on the Devo 8 so far?
I love Deviation and appreciate the work here- just trying to determine if anyone has a sense about the severity of this issue.
...and is is strictly on the Devo 8 so far?
Last edit: 12 Jun 2013 20:01 by notyet.
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- PhracturedBlue
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12 Jun 2013 21:13 #10877
by PhracturedBlue
Replied by PhracturedBlue on topic Mid flight TX reboot
On 3.0 most of the reboot reports I've seen are on Devo10 radios. I don't know why that would be though. I have introduced fixes for the reported issues into the nightly builds, but there has been no verification thatthe crashes are really gone.
In general, if you are concerned about a Tx reboot crashing your model and that being dangerous or unrepairable, you should not use Deviation. I do not make any guarantees other than that I will take your report seriously and try to debug to prevent it from happening in the next release.
In general, if you are concerned about a Tx reboot crashing your model and that being dangerous or unrepairable, you should not use Deviation. I do not make any guarantees other than that I will take your report seriously and try to debug to prevent it from happening in the next release.
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- notyet
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12 Jun 2013 22:49 - 12 Jun 2013 22:53 #10879
by notyet
Replied by notyet on topic Mid flight TX reboot
I've got a devo 10- I'll fly my small helis on it and maybe I'll have something to report at some point. They survive crashes pretty well.
For the purpose of helping troubleshoot it by reporting it with the error log when it happens, should I use the nightly or the release version?
I understand about the liability and that this is provided with no warranty.
For the purpose of helping troubleshoot it by reporting it with the error log when it happens, should I use the nightly or the release version?
I understand about the liability and that this is provided with no warranty.
Last edit: 12 Jun 2013 22:53 by notyet.
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- PhracturedBlue
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12 Jun 2013 23:37 #10880
by PhracturedBlue
Replied by PhracturedBlue on topic Mid flight TX reboot
I am not aware of any crashes in the nightly builds at the moment, though by definition, nightly builds are less tested and can get new bugs at anytime.
If you run on nightly builds, make sure to save the debug.zipfile as you need to provide it along with the errors.txt for me to debug as I don't keep them.
If you run on nightly builds, make sure to save the debug.zipfile as you need to provide it along with the errors.txt for me to debug as I don't keep them.
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- notyet
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13 Jun 2013 00:35 #10883
by notyet
Replied by notyet on topic Mid flight TX reboot
Will do. I'm flying with it now. I just SLAMMED my MCPX BL into the ground afterwards but it was all me. Trying to fly too heavy batteries and it just turned the heli into a brick. Flying with stock batteries works great 
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- briareos7777
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14 Jun 2013 02:07 #10940
by briareos7777
Replied by briareos7777 on topic Mid flight TX reboot
I was using the devo 8s (deviationtx 3.0) had my motor go out mid flight, but i'm not sure if it was the satellite receiver with the zyx s 4.02 or deviation or something else. This actually happened on two different 450 helis.
Right now I do not enter any menus when flying. For the people that had it reboot, I'm wondering if there's some connection in going into some of the menu screens then flying. I know the menus that i went to are the ones where you can bind or set the curves and the model switching.
I've had no issues again, but I power on / off the transmitter and stay in the main view only now after switching models also. I'm not sure if one of the menus are corrupting memory.
Right now I do not enter any menus when flying. For the people that had it reboot, I'm wondering if there's some connection in going into some of the menu screens then flying. I know the menus that i went to are the ones where you can bind or set the curves and the model switching.
I've had no issues again, but I power on / off the transmitter and stay in the main view only now after switching models also. I'm not sure if one of the menus are corrupting memory.
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- MiG_31
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14 Jun 2013 09:27 #10947
by MiG_31
Replied by MiG_31 on topic Mid flight TX reboot
I had this issue once on my Devo6s with deviation 3.0. It happened when I left transmitter unattended to cool down my Ladybird motors. I just heard start-up beep and did find out that flight time was reset to zero and screen is light up. I'm using Deviation for a while now and that never happened to me on previous revisions. I'm flying almost every day and that happened only once. So the issue is pretty rare which makes it very hard to reproduce.
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- FDR
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14 Jun 2013 09:38 #10948
by FDR
Replied by FDR on topic Mid flight TX reboot
I think all the reboots I know about happened when the tx was on for a longer period.
I have never got one, but I always turn off the tx between flights, simply to save power and also because it is easier then resetting two timers...
I have never got one, but I always turn off the tx between flights, simply to save power and also because it is easier then resetting two timers...
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- vlad_vy
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15 Jun 2013 11:32 - 15 Jun 2013 11:34 #10985
by vlad_vy
Replied by vlad_vy on topic Mid flight TX reboot
Devo 8s (44d02f2) mid flight reboot
Attachment not found
Last edit: 15 Jun 2013 11:34 by vlad_vy.
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- PhracturedBlue
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15 Jun 2013 13:17 #10988
by PhracturedBlue
Replied by PhracturedBlue on topic Mid flight TX reboot
Vlad,
I checked in a fix for this one. It is the same one everyone else has been reporting which I thought I'd fixed (hang waiting for Tx module to finish sending). Unfortunately I forgot a 'break' so the infinite loop wasn't actually defeated.
On the plus side, the enhancements I added to the err_handler really help
On the minus side, we still don't know if the fix (which should keep the tx from rebooting) will result in the model falling out of the sky anyway.
I checked in a fix for this one. It is the same one everyone else has been reporting which I thought I'd fixed (hang waiting for Tx module to finish sending). Unfortunately I forgot a 'break' so the infinite loop wasn't actually defeated.
On the plus side, the enhancements I added to the err_handler really help
On the minus side, we still don't know if the fix (which should keep the tx from rebooting) will result in the model falling out of the sky anyway.
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- Kdean
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16 Jun 2013 04:19 #10999
by Kdean
Replied by Kdean on topic Mid flight TX reboot
To really help isolate the issue it may help to list as many factors involved in the reboots as possible. Tx battery voltage, battery type, rx and protocal in use, bec voltage at rx, bec/flight pack voltage, etc...
There might be another event happening that may cause the loop and crash of the tx. Or it might be a certain protocal or rx that is causing the issue.
There might be another event happening that may cause the loop and crash of the tx. Or it might be a certain protocal or rx that is causing the issue.
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- PhracturedBlue
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16 Jun 2013 04:40 #11000
by PhracturedBlue
Replied by PhracturedBlue on topic Mid flight TX reboot
I'm sorry for harping on the same thing over and over, but so far every single reboot reported for 3.0 (or newer) all occurred on the same line of code. So this isn't a question of finding other factors. I know why it crashes on this line, and I applied a fix to prevent that from happening. The main problem is that since I don't know how to duplicate the bug, I can't prove that my fix will actually work as intended.
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- Kdean
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16 Jun 2013 05:33 #11003
by Kdean
Replied by Kdean on topic Mid flight TX reboot
So there is no trigger to the code going into a loop? It just happens at random? Im sorry if im asking dumb questions, its only because i dont understand. I went through a year of walkera 2702v rx's that would stop responding for reasons that i could not figure out. Others have had the same expirience as me while some have never had a lock out with this particular rx. Im thinking there is a hardware defect or something in the rx programing that would cause the problem. Maybe there is something in the hardware that is triggering the code loop.
Can you give me more details on exactly whats happening with the reboot issue, or link me to a post that better explains it.
Can you give me more details on exactly whats happening with the reboot issue, or link me to a post that better explains it.
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- RandMental
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16 Jun 2013 09:24 #11011
by RandMental
Replied by RandMental on topic Mid flight TX reboot
What PB is saying is that there is no external factors involved, the crash reported happens on a Devo TX loaded with Deviation V3.0, and traced to a specific line in the code, for which he included a "potential" fix in the nighties.
It has nothing to do with anything outside the TX.
It has nothing to do with anything outside the TX.
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- notyet
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08 Sep 2013 01:37 #13641
by notyet
Replied by notyet on topic Mid flight TX reboot
Is it possible for Deviation to write which three channels it chose to a file in the filesystem and remove that on a proper shutdown? If it powered up and found the file and/or an unclean shutdown, it might use the three channels recorded?
Maybe this isn't an issue anymore but I was thinking about this the other day- I'm sure there must be a drawback I can't see or I probably don't understand the problem.
Maybe this isn't an issue anymore but I was thinking about this the other day- I'm sure there must be a drawback I can't see or I probably don't understand the problem.
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- rbe2012
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- So much to do, so little time...
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11 Sep 2013 05:03 #13696
by rbe2012
Replied by rbe2012 on topic Mid flight TX reboot
This is a good idea, but it will only be useful if the environment conditions do not change while the tx is powered off. Otherwise it may be that those three channels are used by other transmitters (maybe a video channel with continuous packets) and we might produce interference.
So to make it real useful we should have a timer telling us how long the tx has been shut off - only the Devo12 has such hardware built in and it will still not be easy to activate such a mechanism.
So to make it real useful we should have a timer telling us how long the tx has been shut off - only the Devo12 has such hardware built in and it will still not be easy to activate such a mechanism.
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