/*! Copyright (c) 2018 Siemens AG. Licensed under the MIT License. */
/**
 * Base interface for a sensor hardware-level IO control.
 * Provides the basic read and write functionality according to
 * the given parameters.
 */
export interface ISensorIo {
    parameters?: any;
    read(callback: (value: any) => void): any;
    write(value: any): any;
}
/**
 * Defines static constructor signature for sensor IO interfaces. To be
 * used for constructor dependency injection in the sensor controller.
 */
export declare type ISensorIoStatic<T extends ISensorIo> = new (parameters?: number) => T;
/**
 * The base class for sensor hardware-level IO control. Some IO
 * classes are already defined:
 * - Aio: Handles IO for an analog pin using MRAA (input only).
 * - InputGpio: Handles IO for a digital pin using MRAA (input only).
 * - OuputGpio: Handles IO for a digital pin using MRAA (output only).
 * - MockSensorIo: Mocks the functionality with a cached value.
 *
 * Applications can also define their own SensorIo classes.
 */
export declare abstract class SensorIo implements ISensorIo {
    private _parameters?;
    constructor(_parameters?: number);
    get parameters(): number;
    abstract read(callback: (value: any) => void): any;
    abstract write(value: any): any;
}
/**
 * Mocks the IO communication of an actual sensor hardware. Stores
 * a cached value for the pin and simply updates it with the 'write'
 * calls. The value is 0 at the beginning.
 */
export declare class MockSensorIo extends SensorIo {
    private _value;
    /**
     * Returns the internally cached value.
     */
    read(callback: (value: any) => void): void;
    /**
     * Writes on the internally cached value.
     */
    write(value: any): void;
}