mcp23017

A comprehensive Rust driver for the [Microchip MCP23017][Microchip] IO expander. - Split a device into individual [`embedded-hal`][embedded-hal] pins. - Configure modes, pull-ups, and interrupt triggers with a type-level API. - Service interrupts efficiently with a centralized controller. For usage details and explanatory notes, see the [documentation][Docs.rs]. ### Overview ```rust let i2c = todo!(/* Setup I2C */); // Setup a device: const ADDRESS: u8 = 0x20; let mut device = Mcp23017::<_, ADDRESS>::new(i2c); let (pins, mut interrupt_controller) = device.split()?; // Use a pin as an output: let mut pin = pins.a0.into_push_pull_output()?; pin.set_high()?; pin.is_set_high()?; // Use another pin as an input: let mut pin = pins.a1.into_pull_up_input()?; pin.is_high()?; // Configure an input pin for interrupts: let pin = pin.enable_interrupt(Sense::Edge)?; // When an interrupt occurs, // immediately notify the controller... interrupt_controller.interrupt(Bank::A)?; // ...and later query it about the cause: interrupt_controller.triggered(&pin); ``` [Microchip]: https://www.microchip.com/en-us/product/mcp23017 [Docs.rs]: https://docs.rs/mcp23017-driver/latest [embedded-hal]: https://github.com/rust-embedded/embedded-hal