# _embedded_hal_blocking_i2c_Read in k210_hal::prelude - Rust
Blocking read
Keywords: rust, rustlang, rust-lang, _embedded_hal_blocking_i2c_Read

# Trait k210_hal::prelude::_embedded_hal_blocking_i2c_Read

source · [−]

    pub trait _embedded_hal_blocking_i2c_Read {
        type Error;
        fn try_read(
            &mut self,
            address: u8,
            buffer: &mut [u8]
        ) -> Result<(), Self::Error>;
    }

Expand description

Blocking read

## Associated Types

source

#### type Error

Error type

## Required methods

source

#### fn try_read(
&mut self,
address: u8,
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