Trait embedded_hal::blocking::i2c::WriteRead

pub trait WriteRead<A: AddressMode = SevenBitAddress> {
    type Error;

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

Blocking write + read

Required Associated Types

type Error

Error type

Required Methods

fn write_read(
    &mut self,
    address: A,
    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

I2C Events (contract)

Master: ST SAD+W     O0     O1     ... OM     SR SAD+R        MAK    MAK ...    NMAK SP
Slave:           SAK    SAK    SAK ...    SAK          SAK I0     I1     ... IN

Where

• ST = start condition
• SAD+W = slave address followed by bit 0 to indicate writing
• SAK = slave acknowledge
• Oi = ith outgoing byte of data
• SR = repeated start condition
• SAD+R = slave address followed by bit 1 to indicate reading
• Ii = ith incoming byte of data
• MAK = master acknowledge
• NMAK = master no acknowledge
• SP = stop condition

Implementors