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
>
>
> Â
> 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
> > 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.
> >
>
------------------------------------
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/ts-7000/
<*> Your email settings:
Individual Email | Traditional
<*> To change settings online go to:
http://groups.yahoo.com/group/ts-7000/join
(Yahoo! ID required)
<*> To change settings via email:
<*> To unsubscribe from this group, send an email to:
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
|