readme
# ESP IO Expander Component
This componnent is main esp_io_expander component which defines main functions and types for easy adding specific io expander chip component.
## Supported features
- [x] Set an IO's direction
- [x] Get an IO's direction
- [x] Set an IO's output level
- [x] Get an IO's input level
- [x] Show all IOs' status
- [ ] Interrupt mode