[−][src]Trait embedded_hal::blocking::i2c::TransactionalIter

pub trait TransactionalIter<A: AddressMode = SevenBitAddress> {
    type Error;
    fn try_exec_iter<'a, O>(
        &mut self, 
        address: A, 
        operations: O
    ) -> Result<(), Self::Error>
    where
        O: IntoIterator<Item = Operation<'a>>;
}

Transactional I2C interface (iterator version).

This allows combining operation within an I2C transaction.

Associated Types

type Error

Error type

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Required methods

fn try_exec_iter<'a, O>(
    &mut self,
    address: A,
    operations: O
) -> Result<(), Self::Error> where
    O: IntoIterator<Item = Operation<'a>>, 

Execute the provided operations on the I2C bus (iterator version).

Transaction contract:

  • Before executing the first operation an ST is sent automatically. This is followed by SAD+R/W as appropriate.

  • Data from adjacent operations of the same type are sent after each other without an SP or SR.

  • Between adjacent operations of a different type an SR and SAD+R/W is sent.

  • After executing the last operation an SP is sent automatically.

  • If the last operation is a Read the master does not send an acknowledge for the last byte.

  • ST = start condition

  • SAD+R/W = slave address followed by bit 1 to indicate reading or 0 to indicate writing

  • SR = repeated start condition

  • SP = stop condition

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Implementors

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