How to disable "OVER-VOLTAGE WARNNING" URC on sim800c? Im using SIM800C with esp32, is there any at commands to disable these warnings?
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This question has nothing to do with programming, and nothing to do with Arduino or even ESP32. – hcheung Dec 26 '21 at 12:25
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@hcheung questions about AT commands are actually considered [on-topic](https://meta.stackoverflow.com/q/403258/11336762) by the community. – Roberto Caboni Dec 30 '21 at 17:34
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Please provide enough code so others can better understand or reproduce the problem. – Community Jan 04 '22 at 08:46
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Observe the warnings in the SIM800C datasheet:
If the voltage ≥ 4.3V, the following URC will be reported
OVER-VOLTAGE WARNING
Furthermore, the datasheet states that the module will automatically shut down due to overvoltage if supply voltage exceeds 4.4V (OVER-VOLTAGE POWER OFF URC). This behavior indicates that the module will automatically shut itself down due to negative factors. There is no software interference with this behavior.
Roberto Caboni
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I'm aware that edits should not intervene on the contents of an answer, but in this case it was a typo that actually invalidatedit (the description you quoted was the one referring to another URC, an undervoltage one). Instead of writing my CC answer or relying in comments, I preferred to shorten time by editing myself the correction. Feel free to revert if you felt "violated". – Roberto Caboni Dec 30 '21 at 17:47