[ts-7000] Re: Unexpected TS7500 reboot and read only

["orfanic856" <>]

Good to know. It must really be short somewhere.

I also realized that most busy process is sdctl. But I am not using file I/O 
commands in my scripts so much. Just a bit of error logging.

I will investigate connection with my custom board attached to 44 Pin Header.

Thanks, Vladimir.

--- In  Walter Marvin  wrote:
>
> I never saw heating problems with the Cavium. You may have a short somewhere
>
>
>
> ________________________________
>  From: orfanic856
> To: 
> Sent: Friday, February 1, 2013 6:14 AM
> Subject: [ts-7000] Re: Unexpected TS7500 reboot and read only
> 
>
> Â 
> I attached heat sink to the Cavium processor. Ugly solution, but it's 
> working. Still, this is weird. Is the board so badly designed to be overheat 
> it so easily or is it a bug?
>
> Vladimir.
>
> --- In  Walter Marvin  wrote:
> >
> > Its fairly easy to detect this. Look in the 7550's schematics. Its easy to 
> > cut the lead that controls the watchdog and jumper it back. If the reboot 
> > doesn't then occur, you've got it pegged.�  The system will then hang. 
> > Back out your changes until it doesn't hang any more. I could never get the 
> > watchdog off to work.
> >
> >
> >
> > ________________________________
> >  From: orfanic856
> > To: 
> > Sent: Thursday, January 31, 2013 2:54 PM
> > Subject: [ts-7000] Re: Unexpected TS7500 reboot and read only
> >
> >
> > � 
> > Yes, could be. Solution can be quite difficult I guess.
> >
> > I tried today to kill ts7500ctl deamon, and send to watchdog value 3 
> > (according wiki, to switch off FPGA watchdog). It works. No restarting. 
> > But...instead of restarting, system hangs completely. Then it needs to be 
> > restarted manually. Watchdog was doing good job before I switched him off.
> >
> > I am using set of python threaded scripts to control DIOs as well as 
> > connected USB devices. Most probably it happens during sending control 
> > commands setdio/getdio. I am using self compiled C library imported in to 
> > python. But it hangs when I was communicating through sockets with dioctl 
> > as well. And couple of times it happens also by setting/getting DIOs from 
> > command line.
> >
> > Could it be caused by processor overheating? I do not have way to measure 
> > processor package surface temperature currently, but it's in normal room 
> > temperature, uncovered.
> >
> > Thanks for any hints. Vladimir.
> >
> > --- In  Walter Marvin  wrote:
> > >
> > > One problem That the user space architecture that Technologic uses in the 
> > > 7500 and 7550 is that if you step on the code somewhere, you can lock up 
> > > the "drivers". This results in the watchdog firing, and a reboot.
> > >
> > >
> > >
> > > ________________________________
> > >  From: orfanic856
> > > To: 
> > > Sent: Wednesday, January 30, 2013 4:09 PM
> > > Subject: [ts-7000] Unexpected TS7500 reboot and read only
> > >
> > >
> > > Ã?â??Ã? 
> > > Hi,
> > >
> > > I am facing a problems when trying to set/get DIO pin status using sbus.c.
> > > For example this code:
> > > sbuslock();
> > > sbus_poke16(0x66, sbus_peek16(0x66) & ~(1 << dirPinOffSet));
> > > sbusunlock();
> > >
> > > It immediately restart board and a consequence I need to repair FS 
> > > journals on the SD card (using linuxrc-sdroot). I was also unable to get 
> > > linuxrc-sdroot-readonly working. It's unable to switch to SD card (RW 
> > > plain sdroot works fine).
> > >
> > > Is it somehow watchdog related? Is there anyone with same experience?
> > >
> > > Thanks Vladimir.
> > >
> >
>



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