Function mraa_sys::mraa_i2c_read

pub unsafe extern "C" fn mraa_i2c_read(
    dev: mraa_i2c_context, 
    data: *mut u8, 
    length: c_int
) -> c_int

Simple bulk read from an i2c context

@param dev The i2c context @param data pointer to the byte array to read data in to @param length max number of bytes to read @return length of the read in bytes or -1