mirror of
https://github.com/esphome/esphome-docs.git
synced 2024-12-26 17:27:47 +01:00
52 lines
1.4 KiB
ReStructuredText
52 lines
1.4 KiB
ReStructuredText
|
MCP23017 I/O Expander
|
||
|
|
=====================
|
||
|
|
|
||
|
|
.. seo::
|
||
|
|
:description: Instructions for setting up MCP23017 digital port expanders in ESPHome.
|
||
|
|
:image: mcp23017.png
|
||
|
|
|
||
|
|
The MCP23017 component allows you to use MCP23017 I/O expanders
|
||
|
|
(`datasheet <http://ww1.microchip.com/downloads/en/devicedoc/20001952c.pdf>`__,
|
||
|
|
`Adafruit <https://www.adafruit.com/product/732>`__) in ESPHome.
|
||
|
|
It uses the :ref:`I²C Bus <i2c>` for communication.
|
||
|
|
|
||
|
|
Once configured, you can use any of the 16 pins as
|
||
|
|
pins for 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.
|
||
|
|
|
||
|
|
.. code-block:: yaml
|
||
|
|
|
||
|
|
# Example configuration entry
|
||
|
|
mcp23017:
|
||
|
|
- id: 'mcp23017_hub'
|
||
|
|
address: 0x20
|
||
|
|
|
||
|
|
# Individual outputs
|
||
|
|
switch:
|
||
|
|
- platform: gpio
|
||
|
|
name: "MCP23017 Pin #0"
|
||
|
|
pin:
|
||
|
|
mcp23017: mcp23017_hub
|
||
|
|
# Use pin number 0
|
||
|
|
number: 0
|
||
|
|
# One of INPUT, INPUT_PULLUP or OUTPUT
|
||
|
|
mode: OUTPUT
|
||
|
|
inverted: False
|
||
|
|
|
||
|
|
Configuration variables:
|
||
|
|
~~~~~~~~~~~~~~~~~~~~~~~~
|
||
|
|
|
||
|
|
- **id** (**Required**, :ref:`config-id`): The id to use for this MCP23017 component.
|
||
|
|
- **address** (*Optional*, int): The I²C address of the driver.
|
||
|
|
Defaults to ``0x21``.
|
||
|
|
|
||
|
|
See Also
|
||
|
|
--------
|
||
|
|
|
||
|
|
- :ref:`i2c`
|
||
|
|
- :doc:`switch/gpio`
|
||
|
|
- :doc:`binary_sensor/gpio`
|
||
|
|
- :apiref:`io/mcp23017.h`
|
||
|
|
- :ghedit:`Edit`
|