Hi - first time posting here.
I'm looking for thoughts if anyone has encountered issues with the ESP32-S3 completely unable to recover from a slow drain of the battery and recharge.
thanks
Part of the system design is to be sure the processor always has enough volts or unpredictable things will happen. Short deviations usually do not damage it, long derivations can. You put it through probably the worse case. I can see one possibility where the internal bias voltages going out of range and causing opposing FETs to turn on, eventually over heat and fry the FET. From that there is no recovery.
Is this a real issue you have encountered or just a hypothetical question?
Definitely seeing the behavior where the rest of the board recovers fine but the esp does not until I power cycle.
Might need to add a hardware watchdog but trying to avoid respin for now
That's because of the flash chip. if it doesn't get enough voltage before the ESP starts to boot, it will crash. The best practice is to add a power supervisor or reset circuitry to the board. so that when the voltage rises the chip will rest the esp when a certain voltage level reaches.
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