msp430 has an internal watchdog On 5/15/2016 3:37 PM, John Syne wrote: > >> On May 15, 2016, at 3:14 PM, evilwulfie <[email protected] >> <mailto:[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 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 >>> --- >>> 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. >>> For more options, visit 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] >> <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. > > -- > 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] > <mailto:[email protected]>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/beagleboard/E00049D5-E39B-42CB-8A5E-A19F4E51199F%40gmail.com > <https://groups.google.com/d/msgid/beagleboard/E00049D5-E39B-42CB-8A5E-A19F4E51199F%40gmail.com?utm_medium=email&utm_source=footer>. > For more options, visit 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/300489a5-a027-8f30-a598-89be5b17b4a4%40gmail.com. For more options, visit https://groups.google.com/d/optout.
