Mcp23008 interrupt pin

ESPHome
1

HI,

Reading the documentation for mcp23008 port extender here MCP230xx I/O Expander — ESPHome I don’t see any option to define interrupt pin. There is an option for each pin to define how it will trigger interrupt pin, but no info how to define an action to read input on interrupt.

Does this mean that I have no control on the process? And it will always query i2c port extender on each cycle ignoring it’s internal interrupt-on-change function? Even when there is no state change on pins.

2

Hi,

same here, I use a PCF 8574 / 8575.
How can I use the IRQ-Pin to get the actual state of all input-pins?
How do I have to define the pin the pcf-irq-pin is connected to.
May I can HA configure to get the states by asking the esp?

regards