Trait lpc55_hal::prelude::_embedded_hal_blocking_i2c_WriteRead[][src]

pub trait _embedded_hal_blocking_i2c_WriteRead {
    type Error;
    fn write_read(
        &mut self,
        address: u8,
        bytes: &[u8],
        buffer: &mut [u8]
    ) -> Result<(), Self::Error>; }
Expand description

Blocking write + read

Associated Types

Error type

Required methods

Sends bytes to slave with address addr 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


  • 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