Esphome - how to set minimum light brightness?

ESPHome
1

I have a small ESP-01 dimmer with a touch sensor. It works well but I now want to set the minimum brightness when on and I’m stumped. Can anyone help, please?

The full code is below - I have added comments and one option I tried where I thought this could be done but if there is a better way to do this please advise.

Thanks.

esphome:
  name: test_dimmer
  platform: ESP8266
  board: esp01_1m

wifi:
  ssid: !secret wifi_name
  password: !secret wifi_password
  domain: !secret wifi_domain
  reboot_timeout: 5min
  

  manual_ip:
    static_ip: 	x.x.x.x
    gateway: y.y.y.y
    subnet: 255.255.255.0

logger:
api:
ota:


globals:
  - id: my_global
    type: bool
    restore_value: no
    initial_value: 'false'
    
switch:
# This is to restart the ESPHome device remotely
  - platform: restart
    name: "Restart ESPHome - Test_Dimmer"


sensor:
  - platform: wifi_signal
    name: "WiFi - Test_Dimmer"
    update_interval: 60s


output:
  - platform: esp8266_pwm
    pin: 2
    frequency: 1000 Hz
    id: pwm_a
    inverted: TRUE

light:
  - platform: monochromatic
    name: "Test_Dimmer"
    id: led
    output: pwm_a
    gamma_correct: 0

binary_sensor:
  - platform: gpio
    pin:
      number: 0
      inverted: TRUE  
    id: led_touch
    filters:
      - delayed_on: 50ms  
      - delayed_off: 50ms 

    on_click:
      then:
        - if:
            condition:
              light.is_off: led
            then:
              - light.turn_on: 
                  id: led
                  brightness: 0.1 
              - lambda: |-
                  id(my_global) = (true);                  
            else:
              light.turn_off: led
             
    on_press:
      then:
      - if:
          condition: 
              lambda: |-
                return id(my_global);
# When above condition evaluates to true - Fade_up function else Fade_down
          then:
          - delay: 0.5s
          - while:
              condition:
                binary_sensor.is_on: led_touch
              then:
                - light.dim_relative:
                    id: led
                    relative_brightness: 2%
                    transition_length: 0.1s
                - delay: 0.1s
          - lambda: |-
              id(my_global) = (false);
          else:
          - delay: 0.5s
          - while:
              condition:
                and:
                  - binary_sensor.is_on: led_touch
# This is where I want to set minimum value so that touch sensor only allows 30% minimum
#                  - lambda: |-
#                      return {id(led).get_current_values().get_brightness() > 30};
 then:
                - light.dim_relative:
                    id: led
                    relative_brightness: -2%
                    transition_length: 0.1s
                - delay: 0.1s
                
          - lambda: |-
              id(my_global) = (true);