PI4IOE5V6408 8-Bit I2C I/O Expander

The PI4IOE5V6408 component allows you to use the Diodes Incorporated PI4IOE5V6408 8-bit I2C I/O expander in ESPHome using the I²C Bus for communication.

The PI4IOE5V6408 is a low-voltage 8-bit I/O port expander that operates at 1.65V to 5.5V. It provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface. The device supports both pull-up and pull-down resistors on all I/O pins, and includes interrupt capability for input changes.

Once configured, you can use any of the 8 pins (0-7) within your projects. Within ESPHome they emulate a real internal GPIO pin and can therefore be used with many of ESPHome’s components such as the GPIO binary sensor or GPIO switch.

# Example configuration entry
pi4ioe5v6408:
  - id: 'pi4ioe_hub'

# Individual outputs
switch:
  - platform: gpio
    name: "PI4IOE5V6408 Pin 0"
    pin:
      pi4ioe5v6408: pi4ioe_hub
      number: 0

# Individual inputs
binary_sensor:
  - platform: gpio
    name: "PI4IOE5V6408 Pin 1"
    pin:
      pi4ioe5v6408: pi4ioe_hub
      number: 1

Configuration variables

id (Required, ID): The id to use for this pi4ioe5v6408 component.
address (Optional, int): The I²C address of the device. Defaults to 0x43.
reset (Optional, boolean): Whether to reset the device state during setup. When true (default), all pins are configured as inputs with high impedance during setup. When false, the component will read the current state from the device registers. Defaults to true.

Pin configuration variables

pi4ioe5v6408 (Required, ID): The id of the pi4ioe5v6408 component of the pin.
number (Required, int): The pin number. Valid range is 0-7.
inverted (Optional, boolean): If all read and written values should be treated as inverted. Defaults to false.
mode (Optional, Pin Mode): A pin mode to set for the pin. One of:
- INPUT - Configure the pin as an input.
- OUTPUT - Configure the pin as an output.
- PULLUP - Enable internal pull-up resistor (input mode only).
- PULLDOWN - Enable internal pull-down resistor (input mode only).

Examples

GPIO Switch Example

switch:
  - platform: gpio
    name: "Relay 1"
    pin:
      pi4ioe5v6408: pi4ioe_hub
      number: 0
      mode:
        output: true

GPIO Binary Sensor Example

binary_sensor:
  - platform: gpio
    name: "Button 1"
    pin:
      pi4ioe5v6408: pi4ioe_hub
      number: 1
      mode:
        input: true
        pullup: true

GPIO Output with Inverted Logic

switch:
  - platform: gpio
    name: "LED Strip"
    pin:
      pi4ioe5v6408: pi4ioe_hub
      number: 2
      mode:
        output: true
      inverted: true