> On May 15, 2016, at 3:14 PM, evilwulfie <[email protected]> wrote: > > We use an external msp430 for our intelligent watchdog So who or what monitors the MSP430? Since it is a micro-controller, it is easy to get it into a lock situation. All you need is a programable power supply which will ramp up and down the voltage into the micro-controller at predefined times and it will lock and become completely unresponsive. Granted this will rarely happen, but in our applications where 100K or more devices are installed, we cannot accept some devices locking up because of a power failure.
Regards, John > > > On 5/15/2016 1:07 PM, Super Twang wrote: >> >> >> I've just come across this conversation in my own search for a rock-solid, >> embeddable configuration for the BeagleBone Black. I’m trying to develop an >> embedded controller device that needs to live behind walls, in ceilings and >> in other inaccessible places. ( It is for the automation of art & other >> electronic installations.) >> >> From what I gather here, the BBB is not quite up to the task, without an >> external watchdog circuit (please correct me if I’m misreading this thread). >> >> @John3909: Your suggestion of the GreenPak prompted my own discovery of that >> tech — it looks great, esp the ecosystem of tools around the platform. >> >> In looking around, I found some Silego application notes that implement a >> hardware watchdog for MCUs. >> <http://www.silego.com/products/352/312/AN-1058.html>http://www.silego.com/products/352/312/AN-1058.html >> <http://www.silego.com/products/352/312/AN-1058.html> This might be a >> useful starting point for anyone using GreenPak for a hardware watchdog. >> >> @John3909: Does this design look like it might be a good fit for the BBB? >> (Not knowing how to read GreenPak internals, it is not obvious to me) >> >> Alternately, I'm wondering in the two years that have passed since this >> thread started, if anyone has developed a hardware watchdog design for the >> BBB they'd be willing to share. An open-source hardware watchdog for the >> BBB would go a long way towards ameliorating the hardware issues with the >> PMIC on RevC, and allow it to prosper as a base for applications where >> long-term reliability matters. >> >> Although I’m first and foremost a software engineer, I've got some >> electronics chops (albeit mostly digital), but (sadly) very limited hardware >> design equipment (oscilloscope, etc). [That said, I have iron, and will >> solder!] I’d be happy to develop & contribute the software components for >> such a system (I’d envision a library + device tree overlay) if someone(s) >> else would like to partner up to design the hardware side. >> >> Best, >> >> ST >> >> -- >> For more options, visit http://beagleboard.org/discuss >> <http://beagleboard.org/discuss> >> --- >> You received this message because you are subscribed to the Google Groups >> "BeagleBoard" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] >> <mailto:[email protected]>. >> To view this discussion on the web visit >> <https://groups.google.com/d/msgid/beagleboard/c7fb39d8-84ef-4127-9db8-cd65a6965e31%40googlegroups.com?utm_medium=email&utm_source=footer>https://groups.google.com/d/msgid/beagleboard/c7fb39d8-84ef-4127-9db8-cd65a6965e31%40googlegroups.com >> >> <https://groups.google.com/d/msgid/beagleboard/c7fb39d8-84ef-4127-9db8-cd65a6965e31%40googlegroups.com>. >> For more options, visit https://groups.google.com/d/optout >> <https://groups.google.com/d/optout>. > > > -- > For more options, visit http://beagleboard.org/discuss > <http://beagleboard.org/discuss> > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected] > <mailto:[email protected]>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/beagleboard/976bd440-2729-5157-8692-3357a8d607a0%40gmail.com > > <https://groups.google.com/d/msgid/beagleboard/976bd440-2729-5157-8692-3357a8d607a0%40gmail.com?utm_medium=email&utm_source=footer>. > For more options, visit https://groups.google.com/d/optout > <https://groups.google.com/d/optout>. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/E00049D5-E39B-42CB-8A5E-A19F4E51199F%40gmail.com. For more options, visit https://groups.google.com/d/optout.
