Home-Assistant component and platforms for Raspberry Pi GPIO via MCP23017 Chips
The mcp23017_gpio switch platform allows you to treat individual pins on MCP23017 expansion boards connected to your Raspberry Pi via its I2C bus (Pins 3 & 5 on the Model 3) as switches.
To use this component, add the following to your configuration.yaml file:
# Example configuration.yaml entry
switch:
- platform: mcp23017_gpio
invert_logic: true
i2c_address: 0x20
register_index: 0
pin_index: 0
name: track_lighting
Configuration Variables:
- i2c_address (Required): The address of the MCP23017 with the pin on the Pi's I2C bus, 0x00-0xff
- register_index (Required): The index of the register (0 or 1) with the pin on the MCP23017.
- pin_index (Required): The index of the pin on the register, 0-7.
- name (Optional): Name to use in the frontend, default "[i2c_address]:[register_index]:[pin_index]".
- invert_logic (Optional): If true, inverts the output logic to ACTIVE LOW. Default is false (ACTIVE HIGH).