jaretburkett / Arduino-I2C-Port-Expander

Turn any Arduino compatable chip into an amazing I2C port expander / touch screen controller.
MIT License
19 stars 14 forks source link

Suggestion: Add the ability to Interrupt on change, and power save sleep. #7

Open ghost opened 3 years ago

ghost commented 3 years ago

Two suggestions, the PCF8574 etc. has the ability to generate an interrupt on the host on change of input pins. It would be nice to have that feature available with this expander.

Also, power save/sleep mode. Some (most? all?) of the targets this can be used on have sleep mode and wake on change. I'm not sure if that would be enough to wake on I2C activity or not but it would be another nice thing to have if it can be implemented.