Add optional termination condition when alignment markers are not discovered

[detzen]

The Feature

Hello,
I have a new digital watermeter which shows the water consumption as m³ with 3 decimal places on its display per default. Approximately every 3 minutes, the device starts a sequence in which the firmware status, display test, daily statistics, weekly statistics and a few other things are shown on one after another. For more details, please see discussion #3382.

As described in the mentioned discussion, I choosed aligment markers which only appear during the display test and the display of the current counter reading, because I initially thought, that digit detection will only take place when those markers are detected. But unfortunately, this is actually not the case and I have to deal with incorrectly recognized digits, when the picture has been taken at a time where e.g. the weekly stats are displayed.

I think the described problem could be solved (or prevented), if there would be a configuration option for a termination condition like "Don't try to detect digits, when alignment markers were not recognized". In addition to false detections, such an option would also save CPU cycles on the ESP.

[SybexX]

here's something to test if you feel like it:
AI-on-the-edge-device__update__test_(32d2fbb).zip (based on version 16.0.0-RC4)

[detzen]

I installed the modified firmware and as I can tell so far, it's working as desired. I'll continue to monitor it. Is there a way to access your code to keep track what has been modified? Or will you raise a pull-request to implement it in a future release?

[pidator]

Great idea! It'll also prevent wrong meter readings through e.g. shifted esp holder. Hope it will make it in the next release ;)

[caco3]

As explained in #3382 (comment), there is no such thing as "marker not found". The only way would be to have kind of a threshold.

@SybexX Since I don't see your code change, I have no clue how your approach looks like. Can you provide it as a brach or PR?

[detzen]

@SybexX Will there be any chance, that your enhancement will be implemented in a future release?