Convert string to int?

[Hellis81]

I have this sensor:

text_sensor:
  - platform: nextion
    nextion_id: disp1
    name: $device_name day
    id: disp1_day
    component_name: dayt
    update_interval: 1s

and in lambda code I want to use this as a integer.

day = id(disp1_day).state;

if(daycount == day){
    ^^ int value
}

I found this topic but I don’t get it, I can’t get that to work.

Convert ESPhome text sensor to int or float

Ok I have exhausted my meagre Google skills and have yet to find an answer that works. I want to perform calculations in ESPHome for a Home Assistant Text Sensor. To do this I need to convert it to int. Most of the lambda examples I have seen appear to be from C++ coders and don’t work, generating various compile errors. Can anyone provide an example of converting a string to int (or float) in ESPHome?

Help?

EDIT;

It could probably work the other way around also.
Make daycount a string. daycount is a counter variable in a loop.

[Mikefila]

Does ((toInt(daycount)) == day) work? Other wise from the sensor that creates daycount set the value to a global using (toInt(daycount) in the lambda.

[zoogara (Daryl)]

@Hellis81

day = id(disp1_day).state;

if(daycount == day){
    ^^ int value
}

Read the linked post in my thread. ESPhome uses character arrays not strings, so your code should look like:

int day = atoi(id(disp1_day).state.c_str());

if(daycount == day){

}

[Hellis81]

I could not get atoi or any of the other methods to work.

[JBG (John)]

Hi there you all …

This worked for me :

      it.printf(0, 30, id(OLED_font), "%4.0d W",  atoi(id(SolarReading).state.c_str()));