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efec2a7fbf
* Updated MCP23017 Component To Cover 8 & 16 Port Chips * Made requested changes, adding short paragraph at top of MCP230xx.rst explaining the page is for MCP23008 and MCP23017, also deleted now obsolete MCP23017.rst * Added separate sections for MCP23017, MCP23008 * Remove MCP23017 page (merged with new one) Co-authored-by: Otto Winter <otto@otto-winter.com>
97 lines
2.5 KiB
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97 lines
2.5 KiB
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MCP230xx I/O Expander
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=====================
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.. seo::
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:description: Instructions for setting up MCP23017 or MCP23008 digital port expanders in ESPHome.
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:image: mcp230xx.png
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The Microchip MCP230xx series of general purpose, parallel I/O expansion for I²C
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bus applications come in two different variants: the 8-bit MCP23008 and the 16-bit
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MCP23017, which provide 8 and 16 additional GPIO pins, respectively.
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MCP23017
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--------
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The MCP23017 component allows you to use MCP23017 I/O expanders
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(`datasheet <http://ww1.microchip.com/downloads/en/devicedoc/20001952c.pdf>`__,
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`Adafruit <https://www.adafruit.com/product/732>`__) in ESPHome.
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It uses the :ref:`I²C Bus <i2c>` for communication.
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Once configured, you can use any of the 16 pins as
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pins for your projects. Within ESPHome they emulate a real internal GPIO pin
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and can therefore be used with many of ESPHome's components such as the GPIO
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binary sensor or GPIO switch.
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.. code-block:: yaml
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# Example configuration entry
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mcp23017:
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- id: 'mcp23017_hub'
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address: 0x20
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# Individual outputs
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switch:
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- platform: gpio
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name: "MCP23017 Pin #0"
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pin:
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mcp23017: mcp23017_hub
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# Use pin number 0
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number: 0
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# One of INPUT, INPUT_PULLUP or OUTPUT
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mode: OUTPUT
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inverted: False
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Configuration variables:
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~~~~~~~~~~~~~~~~~~~~~~~~
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- **id** (**Required**, :ref:`config-id`): The id to use for this MCP23017 component.
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- **address** (*Optional*, int): The I²C address of the driver.
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Defaults to ``0x21``.
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MCP23008
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--------
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The configuration is essentially the same with the MCP23008 component
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(`datasheet <http://ww1.microchip.com/downloads/en/devicedoc/21919e.pdf>`__,
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`Adafruit <https://www.adafruit.com/product/593>`__):
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.. code-block:: yaml
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# Example configuration entry
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mcp23008:
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- id: 'mcp23008_hub'
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address: 0x20
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# Individual outputs
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switch:
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- platform: gpio
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name: "MCP23008 Pin #0"
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pin:
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mcp23008: mcp23008_hub
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# Use pin number 0
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number: 0
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# One of INPUT, INPUT_PULLUP or OUTPUT
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mode: INPUT_PULLUP
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inverted: False
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Configuration variables:
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~~~~~~~~~~~~~~~~~~~~~~~~
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- **id** (**Required**, :ref:`config-id`): The id to use for this MCP23008 component.
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- **address** (*Optional*, int): The I²C address of the driver.
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Defaults to ``0x21``.
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See Also
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--------
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- :ref:`i2c`
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- :doc:`switch/gpio`
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- :doc:`binary_sensor/gpio`
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- :apiref:`mcp23017/mcp23017.h`
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- :ghedit:`Edit`
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