Enum Operation 

pub enum Operation<'a> {
    Write(&'a [u8]),
    Read(&'a mut [u8]),
}

A single operation in a multi-stage I2C transaction.

Used with I2c::transfer to compose general scatter/gather transfers. A RESTART is inserted automatically between adjacent operations of differing direction; the underlying i2c_transfer always emits a STOP after the final operation.

Variants

Write(&'a [u8])

Write the bytes from the buffer to the bus.

Read(&'a mut [u8])

Read bytes from the bus into the buffer.