Struct I2cBus

pub struct I2cBus(/* private fields */);

Implementations

impl I2cBus

pub fn from_unit(unit: u32) -> Result<I2cBus, I2cError>

Examples found in repository

examples/mcp.rs (line 15)

fn main() {
    let adr = 0x20;
    use embedded_hal::i2c::blocking::*;
    let mut iic = freebsd_embedded_hal::I2cBus::from_unit(1).unwrap();
    iic.write(adr, &[IODIRA, 0]).unwrap(); // A* are outputs
    iic.write(adr, &[IODIRB, 0xff]).unwrap(); // B* are inputs
    iic.write(adr, &[GPPUB, 0xff]).unwrap(); // B* are pulled up
    loop {
        let mut bank_b: [u8; 1] = [0x69];
        iic.write_read(adr, &[GPIOB], &mut bank_b).unwrap();
        eprintln!("GPIOB: {:x} ({:b})", bank_b[0], bank_b[0]);
        std::thread::sleep(std::time::Duration::from_millis(10));
        iic.write(adr, &[GPIOA, (bank_b[0] & 1) << 7]).unwrap();
        std::thread::sleep(std::time::Duration::from_millis(10));
    }
}

pub fn from_path<P: AsRef<Path>>(path: P) -> Result<I2cBus, I2cError>

Trait Implementations

impl AsRawFd for I2cBus

fn as_raw_fd(&self) -> RawFd

Extracts the raw file descriptor.

impl Drop for I2cBus

fn drop(&mut self)

Executes the destructor for this type.

impl FromRawFd for I2cBus

unsafe fn from_raw_fd(fd: RawFd) -> Self

Constructs a new instance of Self from the given raw file descriptor.

impl IntoRawFd for I2cBus

fn into_raw_fd(self) -> RawFd

Consumes this object, returning the raw underlying file descriptor.

impl Read for I2cBus

type Error = I2cError

Error type

fn read(&mut self, address: u8, buffer: &mut [u8]) -> Result<(), Self::Error>

Reads enough bytes from slave with address to fill buffer

impl Transactional for I2cBus

type Error = I2cError

Error type

fn exec<'a>( &mut self, address: u8, operations: &mut [Operation<'a>], ) -> Result<(), Self::Error>

Execute the provided operations on the I2C bus.

impl TransactionalIter for I2cBus

type Error = I2cError

Error type

fn exec_iter<'a, O>( &mut self, address: u8, operations: O, ) -> Result<(), Self::Error>

where O: IntoIterator<Item = Operation<'a>>,

Execute the provided operations on the I2C bus (iterator version).

impl Write for I2cBus

type Error = I2cError

Error type

fn write(&mut self, address: u8, bytes: &[u8]) -> Result<(), Self::Error>

Writes bytes to slave with address address

impl WriteIter for I2cBus

type Error = I2cError

Error type

fn write_iter<B>(&mut self, address: u8, bytes: B) -> Result<(), Self::Error>

where B: IntoIterator<Item = u8>,

Writes bytes to slave with address address

impl WriteIterRead for I2cBus

type Error = I2cError

Error type

fn write_iter_read<B>( &mut self, address: u8, bytes: B, buffer: &mut [u8], ) -> Result<(), Self::Error>

where B: IntoIterator<Item = u8>,

Writes bytes to slave with address address and then reads enough bytes to fill buffer in a single transaction

impl WriteRead for I2cBus

type Error = I2cError

Error type

fn write_read( &mut self, address: u8, bytes: &[u8], buffer: &mut [u8], ) -> Result<(), Self::Error>

Writes bytes to slave with address address and then reads enough bytes to fill buffer in a single transaction