How to configure and use the hardware watchdog on the ESP8266?

Question

Welcome.

Fellows how do I embrace the hardware watchdog on the ESP8266?
I searched I read that esp has a software watchdog and a hardware watchdog but I don't grasp it.

I would like to do it like in Bascom, I set the hardware watchdog for some time and then in the program I reset it, when the program stands the watchdog will take care of the rest.
Or can someone link some intelligible material?

Regards.

kamyczek · Answer

Bascom does not support the ESP8266 you have to use for example ardruino, because there is support for the esp8266. Bascom is a rather poor tool to start with, if you want to do something sensible, you need to switch to some more sensible programming tools ...

pier · Answer

The topic was set up in the Arduino section but Admin.... Ah... Of course I want to do this in Arduino. I wrote about bascom because there I know how the watchdog works and I think it can be done similarly in ESP.

krzbor · Answer

I found two interesting pages regarding Watchdog: Link and Link Maybe they will help?

Anonymous · Answer

Not to be pigeonholed as colleagues.

I solved/predicted the reset in such a way that I ping to the Google 8.8.8.8 server while testing command responses. If there is no response or response to commands then

DDRB.x=1 ;
delay(1);
DDRB.x=0;

..and zeroing of the state machine variables, i.e. the initialisation command sequence..that's because it's provided for passing a new password to the WiFi

The state of the pin as an output will apply "ground" to the pin connected to the ESP Reset pin. If you never put 5V in there then ESP will be fine, if you are worried about it then put a Schottky diode in there and then the AVR will only be able to short the pin to ground and 5V will never appear on ESP.

I'm even counting the resets and I don't have any in one device which is currently sitting on my desk and has been working with the network for three days (software upload)

@R-MIK Don't measure all programs written in Bascom by your yardstick.... (read-as you or someone else wrote it).
Adapting a found library takes me a similar time..a few hours and I have no problem with it at all.

pier · Answer

Thanks for the idea. I would prefer this watchdog though since it is. TMF how does ESP have nothing to do with Arduino? After all, most of the software on ESP is actually in Arduino. I use Arduino myself.

Anonymous · Answer

I think, maybe I'm wrong, that this Watchdog is there, but for software like NOOS or No Operating System that is for AT command system and you are not able to suspend this system, or it will write Bad Command, or it will actually reset itself

.

A hardware watchdog can come in handy when an ESP user decides to program it themselves.

LUA is also a different matter because it is the program that interprets your program. That is, the preloaded LUA reads what you've scrawled....

pier · Answer

But I don't need it for AT commands. I have a program written in Arduino for ESP and I wanted to put the watchdog there.

Anonymous · Answer

Formulate your questions more precisely. After all, it was enough to write in the first post: .

How to configure and use the hardware watchdog on the ESP8266?

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