Lesson9 - integrate KC868-Server to home assistant by MQTT

[ARSHAD]

it's normal, work well, because you have not set the INPUT trigger OUTPUT command.
such as these code:

switch:
- platform: gpio
name: "light1"
id: light1
pin:
pcf8574: pcf8574_hub_out_1
number: 0
mode: OUTPUT
inverted: true

------------------------------------
binary_sensor:
- platform: gpio
name: "input1"
on_press:
then:
- switch.toggle: light1
pin:
pcf8574: pcf8574_hub_in_1
number: 0
mode: INPUT
inverted: true

-----------------------------------------

the important is add these code:

on_press:
then:
- switch.toggle: light1

i have write the code in file , getting some error - tried to fix but seems some "TAB" "SPACE" issue please help below code 

switch:
  - platform: gpio
    name: "e16s-output1"
    pin:
      pcf8574: pcf8574_hub_out_1
      number: 0
      mode: OUTPUT
      inverted: true

binary_sensor:
  - platform: gpio
    name: "e16s-input1"
    on_press:
    then:
    - switch.toggle: output1
    pin:
      pcf8574: pcf8574_hub_in_1
      number: 0
      mode: INPUT
      inverted: true