What is internal sensor reading frequency?

[shaman79]

Here is the use case:

We want to setup rule, that will turn off switch when sensor reach certain level. The problem is that we need to execute the rule as fast as possible, basically there should be delay between 100 and 300ms between sensor reading and switch off.

Is that achievable with Tasmota and ESP32?

We are not sure what is the Tasmota internal sampling frequency and rule execution delay, so if anyone can shed some light on this it would be helpful.

Also if there is any way to tune this, please point us to the options that affect the rule execution and sensor sampling frequency.

[sfromis]

Depends on what exactly you mean by "sensor", varies across drivers, but many sensor drivers are sampling values about every second. With ESP32, fastest attempt at getting updates is not by using rules, but instead Berry code calling tasmota.read_sensors(true) at short intervals.

[shaman79]

It is an energy sensor, specifically rated current. Thank you for tip on Berry scripting.

[shaman79]

OK, I verified that the sampling rate for the energy sensor, current, is 1 second. If I understood you correctly this is a driver limitation.

We have BL0942 driver, that refers to this code

There is method named Bl09XXEverySecond(). We should add similar method Bl09XXEvery100ms and it will be called automatically by Tasmota when we use every_100ms() method in Berry script or do we need to modify also something in Tasmota itself?

Thank you very much for guidance.