How to detect ESP restart from upgrade

[Jimis1]

Hi

I'm trying to check whether the ESP has reset from an upgrade (USB or OTA) to reset my "reset_counter" variable which is stored in flash.

I tried to detect that from the response from the function nvs_get(). If I get a "value not initialized" then it means I had a code upgrade and I should reset the "reset_counter" variable. But it seems that after I upgrade my code this variable is still initialized !

Can someone help ?

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[MicroController]

How about storing a "firmware version" in NVS?
If versionFromNvs != thisAppsVersion then there was an 'upgrade'.

[Jimis1]

Yes I have thought of that, but I was looking for something non-user dependent (during testing you don't change versions all the time).

If there is no other way I will do it this way, I just thought that it should work this way

For example ATMEL μCs have a register that defines the reason of a reset (WD,brown-out,external etc)

[MicroController]

Yes I have thought of that, but I was looking for something non-user dependent (during testing you don't change versions all the time).

esp_app_get_description() could help.

For example ATMEL μCs have a register that defines the reason of a reset (WD,brown-out,external etc)

-> https://docs.espressif.com/projects/esp ... set-reason
But that's probably of no use in your case.

[mikemoy]

Yes I have thought of that, but I was looking for something non-user dependent (during testing you don't change versions all the time).

What about running a checksum on the flash, and comparing that value to the last value saved.

[mikemoy]

Yes I have thought of that, but I was looking for something non-user dependent (during testing you don't change versions all the time).

What about running a checksum on the flash, and comparing that value to the last value saved.

[mikemoy]

Yes I have thought of that, but I was looking for something non-user dependent (during testing you don't change versions all the time).

What about running a checksum on the flash, and comparing that value to the last value saved.

[Jimis1]

Thanks all ! I will have to implement one of the above