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Showing content from https://rust-embedded.github.io/rust-i2cdev/i2cdev/core/../../src/i2cdev/core.rs.html below:

core.rs.html -- source

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use byteorder::{ByteOrder, LittleEndian};


#[derive(Debug)]
pub enum I2CError {
    NotSupported,
    Other(&'static str),
}


pub type I2CResult<T> = Result<T, I2CError>;






pub trait I2CDevice {
    
    fn read(&mut self, data: &mut [u8]) -> I2CResult<()>;

    
    fn write(&mut self, data: &[u8]) -> I2CResult<()>;

    

    
    #[allow(unused_variables)]
    fn smbus_write_quick(&mut self, bit: bool) -> I2CResult<()> {
        
        
        Err(I2CError::NotSupported)
    }

    
    
    
    
    
    fn smbus_read_byte(&mut self) -> I2CResult<u8> {
        let mut buf = [0_u8];
        try!(self.read(&mut buf));
        Ok(buf[0])
    }

    
    
    
    
    fn smbus_write_byte(&mut self, value: u8) -> I2CResult<()> {
        self.write(&mut [value])
    }

    
    
    
    fn smbus_read_byte_data(&mut self, register: u8) -> I2CResult<u8> {
        try!(self.smbus_write_byte(register));
        self.smbus_read_byte()
    }

    
    
    
    fn smbus_write_byte_data(&mut self, register: u8, value: u8) -> I2CResult<()> {
        self.write(&mut [register, value])
    }

    
    fn smbus_read_word_data(&mut self, register: u8) -> I2CResult<u16> {
        let mut buf: [u8; 2] = [0x00; 2];
        try!(self.smbus_write_byte(register));
        try!(self.read(&mut buf));
        Ok(LittleEndian::read_u16(&buf))
    }

    
    fn smbus_write_word_data(&mut self, register: u8, value: u16) -> I2CResult<()> {
        let mut buf: [u8; 3] = [register, 0, 0];
        LittleEndian::write_u16(&mut buf[1..], value);
        self.write(&buf)
    }

    
    fn smbus_process_word(&mut self, register: u8, value: u16) -> I2CResult<u16> {
        let mut buf: [u8; 2] = [0x00; 2];
        try!(self.smbus_write_word_data(register, value));
        try!(self.read(&mut buf));
        Ok(LittleEndian::read_u16(&buf))
    }

    
    
    
    
    
    #[allow(unused_variables)]
    fn smbus_read_block_data(&mut self, register: u8) -> I2CResult<Vec<u8>> {
        Err(I2CError::NotSupported)
    }

    
    
    
    
    
    #[allow(unused_variables)]
    fn smbus_write_block_data(&mut self, register: u8, values: &[u8]) -> I2CResult<()> {
        Err(I2CError::NotSupported)
    }

    
    
    #[allow(unused_variables)]
    fn smbus_process_block(&mut self, register: u8, values: &[u8]) -> I2CResult<()> {
        Err(I2CError::NotSupported)
    }
}

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