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154 lines
4.9 KiB
ReStructuredText
154 lines
4.9 KiB
ReStructuredText
MCP23Sxx I/O Expander
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=====================
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.. seo::
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:description: Instructions for setting up MCP23S08, MCP23S16 or MCP23S17 digital port expander in ESPHome. This is exactly the same API as the MCP230XX I/O Expander except talks on the SPI bus
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:image: mcp230xx.svg
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The Microchip MCP23Sxx series of general purpose, parallel I/O expansion for SPI bus applications.
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This is exactly the same API as the MCP23SXX I/O Expander except talks on the SPI bus
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**Supported Variants :**
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- :ref:`mcp23S08-label`
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- :ref:`mcp23S17-label`
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.. _mcp23S08-label:
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MCP23S08 Component
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------------------
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The MCP23S08 component (`datasheet <http://ww1.microchip.com/downloads/en/DeviceDoc/MCP23008-MCP23S08-Data-Sheet-20001919F.pdf>`__,
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`Digi-Key <https://www.digikey.com/product-detail/en/microchip-technology/MCP23S08-E-P/MCP23S08-E-P-ND/735954>`__) has 8 GPIOs that can be configured independently.
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.. code-block:: yaml
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# Example configuration entry
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mcp23s08:
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- id: 'mcp23s08_hub'
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cs_pin: D8
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deviceaddress: 0
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# Individual outputs
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switch:
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- platform: gpio
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name: "MCP23S08 Pin #0"
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pin:
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mcp23xxx: mcp23s08_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:
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output: true
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inverted: false
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# Individual inputs
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binary_sensor:
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- platform: gpio
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name: "MCP23S08 Pin #1"
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pin:
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mcp23xxx: mcp23s08_hub
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# Use pin number 1
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number: 1
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# One of INPUT or INPUT_PULLUP
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mode:
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input: true
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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 MCP23S08 component.
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- **cs_pin** (**Required**, int): The SPI chip select pin to use
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- **deviceaddress** (*Optional*, int): The address of the chip.
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Defaults to ``0``.
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- **open_drain_interrupt** (*Optional*, boolean): Configure interrupt pins to open-drain mode.
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Useful when the MCP23S08's power supply is greater than 3.3 volts. Note that these pins
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will require pull-up resistors (to 3.3 volts) when this mode is enabled.
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Pin Configuration Variables:
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****************************
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- **mcp23xxx** (**Required**, :ref:`config-id`): The id of the MCP23S08 component.
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- **interrupt** (*Optional*): Set this pin to trigger the INT pin on the component. Can be one of ``CHANGE``, ``RISING``, ``FALLING``.
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- All other options from :ref:`Pin Schema <config-pin_schema>`
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.. _mcp23S17-label:
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MCP23S17 Component
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------------------
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The MCP23S17 component allows you to use MCP23S17 I/O expanders
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(`datasheet <http://ww1.microchip.com/downloads/en/DeviceDoc/20001952C.pdf>`__,
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`Digi-Key <https://www.digikey.com/product-detail/en/microchip-technology/MCP23S17-E-SP/MCP23S17-E-SP-ND/894276>`__) in ESPHome.
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It uses the :ref:`SPI Bus <spi>` 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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mcp23s17:
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- id: 'mcp23s17_hub'
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cs_pin: D8
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deviceaddress: 0
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# Individual outputs
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switch:
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- platform: gpio
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name: "MCP23S17 Pin #0"
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pin:
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mcp23xxx: mcp23s17_hub
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# Use pin number 0
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number: 0
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mode:
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output: true
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inverted: false
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# Individual inputs
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binary_sensor:
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- platform: gpio
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name: "MCP23S17 Pin #1"
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pin:
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mcp23xxx: mcp23s17_hub
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# Use pin number 1
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number: 1
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# One of INPUT or INPUT_PULLUP
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mode:
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input: true
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pullup: true
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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 MCP23S17 component.
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- **cs_pin** (**Required**, int): The SPI chip select pin to use.
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- **deviceaddress** (*Optional*, int): The address of the chip.
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Defaults to ``0``.
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- **open_drain_interrupt** (*Optional*, boolean): Configure interrupt pins to open-drain mode.
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Useful when the MCP23S17's power supply is greater than 3.3 volts. Note that these pins
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will require pull-up resistors (to 3.3 volts) when this mode is enabled.
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Pin Configuration Variables:
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****************************
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- **mcp23xxx** (**Required**, :ref:`config-id`): The id of the MCP23S17 component.
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- **interrupt** (*Optional*): Set this pin to trigger the port INT pin on the component. Can be one of ``CHANGE``, ``RISING``, ``FALLING``.
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- All other options from :ref:`Pin Schema <config-pin_schema>`
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See Also
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--------
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- :ref:`spi`
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- :doc:`switch/gpio`
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- :doc:`binary_sensor/gpio`
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- :apiref:`API Reference (MCP23S08) <mcp23S08/mcp23S08.h>`
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- :apiref:`API Reference (MCP23S17) <mcp23S17/mcp23S17.h>`
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- :ghedit:`Edit`
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