Trait embedded_hal::blocking::i2c::WriteRead

pub trait WriteRead<A: AddressMode = SevenBitAddress> {
    type Error;
    fn try_write_read(
        &mut self, 
        address: A, 
        bytes: &[u8], 
        buffer: &mut [u8]
    ) -> Result<(), Self::Error>;
}

Blocking write + read

Associated Types

type Error

Error type

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Required methods

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

Sends 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

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Implementors

impl<A, E, S> WriteRead<A> for S where
    A: AddressMode,
    S: Default<A> + Transactional<A, Error = E>, 

type Error = E

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

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