# TCA9554(A) Driver
Driver for the TCA9554(A) I/O expander, implementing the I²C trait from [embedded-hal-async](https://crates.io/crates/embedded-hal-async).
## Features
- [x] Support for both variants (TCA9554 and TCA9554A)
- [x] Register access (input, output, polarity, and direction)
- [x] Reset registers to power-on defaults
- [x] Async trait implementation
- [ ] Sync trait implementation
- [ ] Decompose the driver into discrete pins
## Contributions
Contributions adding the missing features listed above, additional test cases, or examples are welcome.
## Datasheets
- [TCA9554](https://www.ti.com/product/TCA9554)
- [TCA9554A](https://www.ti.com/product/TCA9554A)
Note: The only difference between the two variants is the fixed portion of the I²C address.