Module gpio

API for the GPIO peripheral

The implementation of this GPIO module is heavily based on the ATSAMD HAL implementation.

This API provides two different submodules, pin and dynpin, representing two different ways to handle GPIO pins. The default, pin, is a type-level API that tracks the state of each pin at compile-time. The alternative, dynpin is a type-erased, value-level API that tracks the state of each pin at run-time.

The type-level API is strongly preferred. By representing the state of each pin within the type system, the compiler can detect logic errors at compile-time. Furthermore, the type-level API has absolutely zero run-time cost.

If needed, dynpin can be used to erase the type-level differences between pins. However, by doing so, pins must now be tracked at run-time, and each pin has a non-zero memory footprint.

Examples

• Blinky example

Re-exports

pub use dynpin::*;

pub use pin::*;

pub use asynch::*;

Modules

asynch

Async GPIO functionality for the VA108xx family.

dynpin

Type-erased, value-level module for GPIO pins

pin

Type-level module for GPIO pins

Structs

IsMaskedError

Enums

InterruptEdge

InterruptLevel

PinState

Port

Constants

NUM_GPIO_PINS

NUM_PINS_PORT_A

NUM_PINS_PORT_B