/// <reference types="node" />
import { Register } from './mpu6050';
/**
 * I/O utilities for I2C communications with MPU6050 devices.
 * This interface is based on https://github.com/ElectronicCats/mpu6050/blob/master/src/I2Cdev.h
 */
export interface I2CHelper {
    shutdown(): void;
    /** Read a single bit from an 8-bit device register.
     * @param deviceAddr I2C slave device address
     * @param regAddr Register regAddr to read from
     * @param bitNum Bit position to read (0-7)
     * @returns Status bit value
     */
    readBit(deviceAddr: number, regAddr: Register, bitNum: number): number;
    /** Read multiple bits from an 8-bit device register.
     * @param deviceAddr I2C slave device address
     * @param regAddr Register regAddr to read from
     * @param bitStart First bit position to read (0-7)
     * @param length Number of bits to read (not more than 8)
     * @returns The bits read
     */
    readBits(deviceAddr: number, regAddr: Register, bitStart: number, length: number): number;
    /** Read single byte from an 8-bit device register.
     * @param deviceAddr I2C slave device address
     * @param regAddr Register regAddr to read from
     * @returns The byte read.
     */
    readByte(deviceAddr: number, regAddr: Register): number;
    /** Read multiple bytes from an 8-bit device register.
     * @param deviceAddr I2C slave device address
     * @param regAddr First register regAddr to read from
     * @param length Number of bytes to read
     * @returns Buffer containing the read bytes
     */
    readBytes(deviceAddr: number, regAddr: Register, byteCnt: number): Buffer;
    /** Read single word from a 16-bit device register.
     * @param deviceAddr I2C slave device address
     * @param regAddr Register regAddr to read from
     * @return The 16-bit word read.
     */
    readWord(deviceAddr: number, regAddr: Register): number;
    /**
     * Write a single bit in an 8-bit device register.
     * @param deviceAddr I2C slave device address
     * @param regAddr Register regAddr to write to
     * @param bitNum Bit position to write (0-7)
     * @param data New bit value to write
     * @returns Status of operation (0 = success)
     */
    writeBit(deviceAddr: number, regAddr: Register, bitNum: number, data: number): number;
    /** Write multiple bits in an 8-bit device register.
     * @param deviceAddr I2C slave device address
     * @param regAddr Register regAddr to write to
     * @param bitStart First bit position to write (0-7)
     * @param length Number of bits to write (not more than 8)
     * @param data Right-aligned value to write
     * @returns Status of operation (0 = success)
     */
    writeBits(deviceAddr: number, regAddr: Register, bitStart: number, length: number, data: number): number;
    /** Write single byte to an 8-bit device register.
     * @param deviceAddr I2C slave device address
     * @param regAddr Register address to write to
     * @param data New byte value to write
     * @returns Status of operation (0 = success)
     */
    writeByte(deviceAddr: number, regAddr: Register, data: number): number;
    /** Write multiple bytes to an 8-bit device register.
     * @param deviceAddr I2C slave device address
     * @param regAddr First register address to write to
     * @param length Number of bytes to write
     * @param data Buffer to copy new data from
     * @returns Status of operation (0 = success)
     */
    writeBytes(deviceAddr: number, regAddr: Register, length: number, data: Buffer): number;
    /** Write 2 byte number to a 16-bit device register.
     * @param deviceAddr I2C slave device address
     * @param regAddr First register address to write to
     * @param length Number of words to write
     * @param data Data to copy
     * @returns Status of operation (0 = success)
     */
    writeWord(deviceAddr: number, regAddr: Register, data: number): number;
}
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