ESPHome Configuration ▸
1-Wire Bus ▸
1-Wire Bus via GPIO

1-Wire Bus via GPIO¶

The gpio platform uses the CPU to generate the bus signals on an on-board GPIO pin.

# Example configuration entry
one_wire:
  - platform: gpio
    pin: GPIOXX

Configuration variables:¶

pin (Required, number): The pin which will be use for bus communication. Note that 1-wire is a bi-directional bus so the selected GPIO pin must support both input and output. This must be a GPIO pin internal to the microcontroller and cannot be a pin located on an I/O expander or similar device.
id (Optional, ID): Manually specify the ID used for code generation. Required if you have multiple busses.

See Also¶