Struct Tca9554 

pub struct Tca9554<I2C> { /* private fields */ }

Driver for a TCA9554(A) I/O expander.

Implementations

impl<I2C> Tca9554<I2C>

pub fn new(i2c: I2C, address: Address) -> Self

Creates a new driver with the given I²C peripheral and address.

pub fn address(&self) -> Address

Gets the I²C used by the driver.

pub fn release(self) -> I2C

Releases the driver, returning ownership of the I²C peripheral.

impl<I2C, E> Tca9554<I2C>

where I2C: I2c<Error = E>,

pub async fn read_input(&mut self) -> Result<u8, E>

Reads the value of the input register.

pub async fn read_output(&mut self) -> Result<u8, E>

Reads the value of the output register.

pub async fn write_output(&mut self, state: u8) -> Result<(), E>

Writes the value of the output register.

pub async fn read_polarity(&mut self) -> Result<u8, E>

Reads the value of the polarity inversion register.

pub async fn write_polarity(&mut self, state: u8) -> Result<(), E>

Writes the value of polarity inversion register.

pub async fn read_direction(&mut self) -> Result<u8, E>

Reads the value of the direction register.

pub async fn write_direction(&mut self, state: u8) -> Result<(), E>

Writes the value of the direction register.

pub async fn reset(&mut self) -> Result<(), E>

Writes the state of the registers to the chip’s power-on defaults.

pub async fn is_in_default_state(&mut self) -> Result<bool, E>

Returns whether or not the current state of the registers matches the chip’s power-on defaults.

When the chip is functioning properly, the registers will match the power-on defaults after power has been applied or after a call to Self::reset().