I have 50 Particle Electrons that are set to connect one per hour. Occasionally, during a connection attempt the code will block and the only way to recover is to physically reboot the device. Since my Electrons are installed in remote locations, this unfortunately isn’t a routine option. Both Part…

Have you considered adding a real watchdog reset chip to your design to reset it when the Electron locks up?

[image] RWB: Have you considered adding a real watchdog reset chip to your design to reset it when the Electron locks up? It's an option, but surely there must be a way to do something FW-side to mitigate this issue?

Without a hardware based watchdog it’s basically impossible to accomplish the full system reset once the device locks up without external hardware. The device has a hardware watchdog built in but it’s not enabled or useable for some reason which causes us to add external watchdog circuits. I’m addi…

[image] RWB: Without a hardware based watchdog it’s basically impossible to accomplish the full system reset once the device locks up without external hardware. The device has a hardware watchdog built in but it’s not enabled or useable for some reason which causes us to add external watchdog ci…

Check this out: [image] Improving Electron Reliability - External Watchdog Timer Project Share All, I have been moving my park sensors over to the Particle platform and it has been a great experience. With my sensors deployed in remote locations, reliability is key. To…

I assume it’s not the expectation we will have the STM32 Hardware Watchdog feature in 0.8.0 anytime soon? And I suppose regardless of the watchdog used, an Electron in Deep Sleep won’t pet the dog and therefore needs to be woken up in time to do so? I’ll get started on re-creating this HW design to…

You can find Watchdog chips with wider pet the dog inteverals if you do not want to wake up every 5 mins to signal it.

My understanding from the comments in your other Post was this would best be accomplished with MANUAL Mode : [image] Correctly turning off the Cellular? One difference between SEMI_AUTOMATIC and MANUAL with SYSTEM_THREAD(ENABLED) is that some functions are non-blocking in MANUAL mode while they…

Switching to Manual mode is easier than adding more HW to my design, so I would favour that, but I wasn’t 100% sure if Manual mode is a 100% failsafe method for blocking code. Reliability is key for my application. I believe Particle.connect() and Particle.publish() are the only two blocking command…

[image] Vitesze: but I wasn’t 100% sure if Manual mode is a 100% failsafe method for blocking code Some of the Elites would have to speak to that, but my guess is that external watchdog would be the only way to approach 100%. But for me, it's [Manual/Threading] worked for a few projects tha…

Blocking Particle.connect() and publish()

Firmware

RWB December 21, 2018, 9:41pm 6

Check this out:

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Electron Freezing and Unrecoverable Troubleshooting	20	1896	April 20, 2018
Electron stuck blinking Cyan Firmware	6	700	March 11, 2019
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Blocking Particle.connect() and publish()

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