How to use a parameter inside a id() function iside a lambda inside a script

ESPHome
1

Hi all,

I have a script like this:

  • id: update_battery_icons
    parameters:
    param_name: string
    value: float
    then:
    - lambda: |-
    if (isnan(value)){
    id(param_name) = “󰁾”;
    }
    else if (value < 10){
    id(param_name) = “󰀘”;
    }

but the compiler does not like this as “param_name” is not an id.

Couldn’t find ID ‘param_name’. Please check you have defined an ID with that name in your configuration.

Any idea how to fix this?

2

Please use code tags to post your yaml, otherwise it’s not readable.
Also, describe what are you trying to accomplish.

3

The fine manual shows the correct usage:

if (isnan(value)){
  param_name = "...";
}
else if (value < 10){
  param_name = "...";
}
4

You are right. I did it from my phone, but now I am on my laptop I see the code button.

Let me try again:

I have a long lambda that I am using on multiple places.
Right now I have the same code copied, but I would like to define it once as a script and reuse it.

The lambda basically updates a global variable.

- lambda: |-
          if (isnan(x)){
            id(solarman_battery_iconstring) = "󰤮"; 
          }
          else if (x < 10){
              id(solarman_battery_iconstring) = "󰁺";
          }
          else if (x < 20){
              id(solarman_battery_iconstring) = "󰁻";
          }
          else if (x < 30){
              id(solarman_battery_iconstring) = "󰁼";
          }
          else if (x < 40){
              id(solarman_battery_iconstring) = "󰁽";
          }
          else if (x < 50){
              id(solarman_battery_iconstring) = "󰁾";
          }
          else if (x < 60){
              id(solarman_battery_iconstring) = "󰁿";
          }
          else if (x< 70){
              id(solarman_battery_iconstring) = "󰂀";
          }
          else if (x < 80){
              id(solarman_battery_iconstring) = "󰂁";
          }
          else if (x < 90){
              id(solarman_battery_iconstring) = "󰂂";
          }
          else if (x < 100){
              id(solarman_battery_iconstring) = "󰁹";
          }
          else{
              id(solarman_battery_iconstring) = "󰁹";
          }

I want to supply the name of the global parameter to be updated as a variable to the script. But that gives me the error as displayed

5

I’m still not following.
Global variable is clear to me, but what is global parameter and variable here?

6

I have globals like this:

globals:
  - id: wifi_iconstring
    type: std::string
    restore_value: no
    initial_value: '"󰤮"'
  - id: battery_iconstring
    type: std::string
    restore_value: no
    initial_value: '"󰂁"'
  - id: solarman_battery_iconstring
    type: std::string
    restore_value: no
    initial_value: '"󰂁"'
  - id: recent_touch
    type: bool
    restore_value: no
    initial_value: "true"

And the script takes the name of a global as a vriable like this:

script:
  - id: update_battery_icons
    parameters:
      param_name: string
      value: float
    then:
      - lambda: |-
          if (isnan(value)){
            id(param_name) = "󰁾"; 
          }
          ....
          else{
              id(param_name) = "󰁹";
          }

Thanks for your help

7

I don’t think there is “out of the box” way to do that.
Have a look at the approach from last post of this topic:

8

thanks!

Sounds a little too complex for me. For now i will just copy past the code

9

I totally agree…