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readme.md
| id | label | title | type | description | source | since | install |
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| mcp23017 | MCP23017 | MCP23017 - Bindings | binding | This binding provides native access for MCP23017 16 bit bidirectional I/O expander on I2C bus. Please consider datasheet for IC for future information. | https://github.com/openhab/openhab1-addons/blob/master/bundles/binding/org.openhab.binding.mcp23017/README.md | 1x | manual |
{% include base.html %}
MCP23017 Binding
This binding provides native access for MCP23017 16 bit bidirectional I/O expander on I2C bus. Please consider datasheet for IC for future information.
This binding works nicely with openHAB 1.8.3 and 2.0.0 runtimes.
Binding Configuration
No special configuration is needed.
Item Configuration
Since MCP23017 is digital IO expander on I2C bus, only two types of items are supported:
Contactfor pins that used as digital input andSwitchfor digital output. Find the example below.
Contact Test1 "Test 1" (Tests) { mcp23017="{ address:21, pin:'A0', mode:'DIGITAL_INPUT'}" }
configures pin 0 at bank A (GPA0 on datasheet) as input of the IC on address 0x20
Switch Test2 "Test 2" (Tests) { mcp23017="{ address:21, pin:'B1', mode:'DIGITAL_OUTPUT', defaultState:'LOW'}" }
configures pin 1 at bank B (GPB1 on datasheet) as output of the IC on adress 0x21