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HA-MCP23017
Implementación de MCP23017 para asistente de inicio (threadsafe, soporte de flujo de latencia más bajo y flujo de configuración)
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HA-mcp23017
MCP23008/MCP23017 implementation for Home Assistant (HA)
Highlights of what it does offer
- Async implementation (more reactive and nicer to HA)
- Thread-safety allows different entities to use the same component
- Config Flow support (UI configuration) in addition to legacy configuration.yaml.
- Push iso pull model for higher reactivity, e.g. 100ms polling for 'zero-delay' push button without loading HA.
- Optimized i2c bus bandwidth utilisation
- Polling per device instead of per entity/8x gain, register cache to avoid read-modify-write/3xgain or rewriting the same register value)
- Synchronization with the device state at startup, e.g. avoid output glitches when HA restart.
- Compatible with MCP23008 device (8 pins variant).
- Support of multiple I2C busses.
Installation
1. Add this MCP23017 integration to HA
- Using HACS
- Or by updating manually your custom_components folder
- Clone or download this repository
- Move custom_components/mcp23017 to your <ha_configuration_folder>, e.g. /home/homeassistant/.homeassistant/custom_components/mcp23017
- Restart HA and clear browser cache (or restart a browser); latter is required for new config_flow to show up
2. Add your mcp23017 component(s) using either:
-
config flow (Configuration->Integrations->Add integration)
- Created entities will be visible in the Integrations tab and aggregated per device (i2c address) in the Devices tab.
- Entity parameters (invert logic, pull-up, ...) can be adapted individually by using the entity's Options button once created.
-
configuration.yaml see configuration example below.
- Syntax is compatible with the now defunct core implementation (removed by https://github.com/home-assistant/core/pull/67281)
- New hw_sync option allowing to either synchronize initial value of the switch with the hardware (true, default option) or to set it to a fixed value (false, value=invert_logic)
- Entity parameters (invert logic, pull-up, ...) can only be set globally for all pins of a given device/integration.
- Syntax is compatible with the now defunct core implementation (removed by https://github.com/home-assistant/core/pull/67281)
Example entry for configuration.yaml
:
# Example configuration.yaml
binary_sensor:
- platform: mcp23017
i2c_bus: 1 # Can be omitted as the default value for I2C is set to 1.
i2c_address: 0x26
pins:
8 : Button_0
9 : Button_1
10: Button_2
11: Button_3
- platform: mcp23017
i2c_address: 0x27
invert_logic: true
pins:
8: Button_4
9: Button_5
10: Button_6
11: Button_7
switch:
- platform: mcp23017
i2c_bus: 2
i2c_address: 0x26
pins:
0 : Output_0
1 : Output_1
2 : Output_2
3 : Output_3
- platform: mcp23017
i2c_bus: 2
i2c_address: 0x27
hw_sync: false
pins:
0 : Output_4
1 : Output_5
2 : Output_6
3 : Output_7
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Reviews

user_lOdLOaGT
The HA-mcp23017 by jpcornil-git is an outstanding component for home automation projects. The integration with the Home Assistant platform is seamless, and the extensive documentation on the GitHub page ensures even beginners can utilize its full potential. Highly recommend for anyone looking to expand their GPIO capabilities effortlessly!