Struct Gpio

pub struct Gpio { /* private fields */ }

Implementations

impl Gpio

pub fn new() -> Result<Self, Error>

Create a new handle to the GPIO peripheral.

This will attempt to map a portion of /dev/mem, in order to access the memory mapped GPIO peripheral.

This may fail if:

• we don’t have root permission.
• the kernel was compiled with CONFIG_IO_STRICT_DEVMEM.
• the kernel was compiled with CONFIG_STRICT_DEVMEM, and not started with iomem=relaxed on the kernel command line.

pub fn control_block(&self) -> *mut c_void

Get the pointer to the mapped control block.

pub fn read_all(&self) -> GpioState

Read the entire current GPIO state.

pub fn read_register(&self, reg: Register) -> u32

Read a value from a register.

pub unsafe fn write_register(&mut self, reg: Register, value: u32)

Write a value to a register.

pub unsafe fn and_register(&mut self, reg: Register, value: u32)

Perform an atomic bitwise AND on the contents of a register.

pub unsafe fn or_register(&mut self, reg: Register, value: u32)

Perform an atomic bitwise OR on the contents of a register.

pub unsafe fn xor_register(&mut self, reg: Register, value: u32)

Perform an atomic bitwise XOR on the contents of a register.

pub fn read_level(&self, index: usize) -> bool

Read the current level of a GPIO pin.

pub fn set_level(&mut self, index: usize, value: bool)

Atomically set the level of a single GPIO pin.

Trait Implementations

impl Drop for Gpio

fn drop(&mut self)

Executes the destructor for this type.