Crate pca9539

Abstraction of PCA9539

Abstraction for I/O expander PCA9539. This crate offers the following features:

• Individual pin instances, fully implementing digital::v2 traits of embedded_hal
• Central I/O control, s. PCA9539 module
• Two state management modes for reduced I2C overhead, s. pins module
• Three concurrency models, s. concurrency section
• no_std support

Example

use pca9539::example::DummyI2CBus;
use pca9539::expander::Bank::Bank0;
use pca9539::expander::PCA9539;
use pca9539::expander::PinID::Pin1;
use embedded_hal::digital::v2::InputPin;

let i2c_bus = DummyI2CBus::default();
let mut  expander = PCA9539::new(i2c_bus, 0x74);
let pins = expander.pins();

let pin01 = pins.get_pin(Bank0, Pin1);
assert!(pin01.is_high().unwrap());

Modules

• example
  Dummy I2C bus for examples
• expander
  Abstraction of PCA9539
• guard
  Concurrency wrappers
• pins
  Individual GPIO pins