Trait embedded_hal::blocking::i2c::Read

source · 
pub trait Read<A: AddressMode = SevenBitAddress> {
    type Error;

    // Required method
    fn read(&mut self, address: A, buffer: &mut [u8]) -> Result<(), Self::Error>;
}
Expand description

Blocking read

Required Associated Types§

source

type Error

Error type

Required Methods§

source

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

Reads enough bytes from slave with address to fill buffer

I2C Events (contract)
Master: ST SAD+R        MAK    MAK ...    NMAK SP
Slave:           SAK B0     B1     ... BN

Where

  • ST = start condition
  • SAD+R = slave address followed by bit 1 to indicate reading
  • SAK = slave acknowledge
  • Bi = ith byte of data
  • MAK = master acknowledge
  • NMAK = master no acknowledge
  • SP = stop condition

Implementors§