TCA9554(A) Driver

Driver for the TCA9554(A) I/O expander, implementing the I²C trait from embedded-hal-async.

Features

• Support for both variants (TCA9554 and TCA9554A)
• Register access (input, output, polarity, and direction)
• Reset registers to power-on defaults
• 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
• TCA9554A

Note: The only difference between the two variants is the fixed portion of the I²C address.