/*********************************************************************
 *
 *  $Id: svn_id $
 *
 *  Implements the high-level API for Humidity functions
 *
 *  - - - - - - - - - License information: - - - - - - - - -
 *
 *  Copyright (C) 2011 and beyond by Yoctopuce Sarl, Switzerland.
 *
 *  Yoctopuce Sarl (hereafter Licensor) grants to you a perpetual
 *  non-exclusive license to use, modify, copy and integrate this
 *  file into your software for the sole purpose of interfacing
 *  with Yoctopuce products.
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 *  source or object form, as long as the sole purpose of this
 *  code is to interface with Yoctopuce products. You must retain
 *  this notice in the distributed source file.
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 *  You should refer to Yoctopuce General Terms and Conditions
 *  for additional information regarding your rights and
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 *
 *  THE SOFTWARE AND DOCUMENTATION ARE PROVIDED 'AS IS' WITHOUT
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 *  WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY, FITNESS
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import { YAPIContext, YSensor, YMeasure } from './yocto_api.js';
/**
 * YHumidity Class: humidity sensor control interface, available for instance in the Yocto-CO2-V2, the
 * Yocto-Meteo-V2 or the Yocto-VOC-V3
 *
 * The YHumidity class allows you to read and configure Yoctopuce humidity sensors.
 * It inherits from YSensor class the core functions to read measurements,
 * to register callback functions, and to access the autonomous datalogger.
 */
export declare class YHumidity extends YSensor {
    _className: string;
    _relHum: number;
    _absHum: number;
    _valueCallbackHumidity: YHumidity.ValueCallback | null;
    _timedReportCallbackHumidity: YHumidity.TimedReportCallback | null;
    readonly RELHUM_INVALID: number;
    readonly ABSHUM_INVALID: number;
    static readonly RELHUM_INVALID: number;
    static readonly ABSHUM_INVALID: number;
    constructor(yapi: YAPIContext, func: string);
    imm_parseAttr(name: string, val: any): number;
    /**
     * Changes the primary unit for measuring humidity. That unit is a string.
     * If that strings starts with the letter 'g', the primary measured value is the absolute
     * humidity, in g/m3. Otherwise, the primary measured value will be the relative humidity
     * (RH), in per cents.
     *
     * Remember to call the saveToFlash() method of the module if the modification
     * must be kept.
     *
     * @param newval : a string corresponding to the primary unit for measuring humidity
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    set_unit(newval: string): Promise<number>;
    /**
     * Returns the current relative humidity, in per cents.
     *
     * @return a floating point number corresponding to the current relative humidity, in per cents
     *
     * On failure, throws an exception or returns YHumidity.RELHUM_INVALID.
     */
    get_relHum(): Promise<number>;
    /**
     * Returns the current absolute humidity, in grams per cubic meter of air.
     *
     * @return a floating point number corresponding to the current absolute humidity, in grams per cubic meter of air
     *
     * On failure, throws an exception or returns YHumidity.ABSHUM_INVALID.
     */
    get_absHum(): Promise<number>;
    /**
     * Retrieves a humidity sensor for a given identifier.
     * The identifier can be specified using several formats:
     *
     * - FunctionLogicalName
     * - ModuleSerialNumber.FunctionIdentifier
     * - ModuleSerialNumber.FunctionLogicalName
     * - ModuleLogicalName.FunctionIdentifier
     * - ModuleLogicalName.FunctionLogicalName
     *
     *
     * This function does not require that the humidity sensor is online at the time
     * it is invoked. The returned object is nevertheless valid.
     * Use the method YHumidity.isOnline() to test if the humidity sensor is
     * indeed online at a given time. In case of ambiguity when looking for
     * a humidity sensor by logical name, no error is notified: the first instance
     * found is returned. The search is performed first by hardware name,
     * then by logical name.
     *
     * If a call to this object's is_online() method returns FALSE although
     * you are certain that the matching device is plugged, make sure that you did
     * call registerHub() at application initialization time.
     *
     * @param func : a string that uniquely characterizes the humidity sensor, for instance
     *         YCO2MK02.humidity.
     *
     * @return a YHumidity object allowing you to drive the humidity sensor.
     */
    static FindHumidity(func: string): YHumidity;
    /**
     * Retrieves a humidity sensor for a given identifier in a YAPI context.
     * The identifier can be specified using several formats:
     *
     * - FunctionLogicalName
     * - ModuleSerialNumber.FunctionIdentifier
     * - ModuleSerialNumber.FunctionLogicalName
     * - ModuleLogicalName.FunctionIdentifier
     * - ModuleLogicalName.FunctionLogicalName
     *
     *
     * This function does not require that the humidity sensor is online at the time
     * it is invoked. The returned object is nevertheless valid.
     * Use the method YHumidity.isOnline() to test if the humidity sensor is
     * indeed online at a given time. In case of ambiguity when looking for
     * a humidity sensor by logical name, no error is notified: the first instance
     * found is returned. The search is performed first by hardware name,
     * then by logical name.
     *
     * @param yctx : a YAPI context
     * @param func : a string that uniquely characterizes the humidity sensor, for instance
     *         YCO2MK02.humidity.
     *
     * @return a YHumidity object allowing you to drive the humidity sensor.
     */
    static FindHumidityInContext(yctx: YAPIContext, func: string): YHumidity;
    /**
     * Registers the callback function that is invoked on every change of advertised value.
     * The callback is then invoked only during the execution of ySleep or yHandleEvents.
     * This provides control over the time when the callback is triggered. For good responsiveness,
     * remember to call one of these two functions periodically. The callback is called once juste after beeing
     * registered, passing the current advertised value  of the function, provided that it is not an empty string.
     * To unregister a callback, pass a null pointer as argument.
     *
     * @param callback : the callback function to call, or a null pointer. The callback function should take two
     *         arguments: the function object of which the value has changed, and the character string describing
     *         the new advertised value.
     * @noreturn
     */
    registerValueCallback(callback: YHumidity.ValueCallback | null): Promise<number>;
    _invokeValueCallback(value: string): Promise<number>;
    /**
     * Registers the callback function that is invoked on every periodic timed notification.
     * The callback is invoked only during the execution of ySleep or yHandleEvents.
     * This provides control over the time when the callback is triggered. For good responsiveness, remember to call
     * one of these two functions periodically. To unregister a callback, pass a null pointer as argument.
     *
     * @param callback : the callback function to call, or a null pointer. The callback function should take two
     *         arguments: the function object of which the value has changed, and an YMeasure object describing
     *         the new advertised value.
     * @noreturn
     */
    registerTimedReportCallback(callback: YHumidity.TimedReportCallback | null): Promise<number>;
    _invokeTimedReportCallback(value: YMeasure): Promise<number>;
    /**
     * Continues the enumeration of humidity sensors started using yFirstHumidity().
     * Caution: You can't make any assumption about the returned humidity sensors order.
     * If you want to find a specific a humidity sensor, use Humidity.findHumidity()
     * and a hardwareID or a logical name.
     *
     * @return a pointer to a YHumidity object, corresponding to
     *         a humidity sensor currently online, or a null pointer
     *         if there are no more humidity sensors to enumerate.
     */
    nextHumidity(): YHumidity | null;
    /**
     * Starts the enumeration of humidity sensors currently accessible.
     * Use the method YHumidity.nextHumidity() to iterate on
     * next humidity sensors.
     *
     * @return a pointer to a YHumidity object, corresponding to
     *         the first humidity sensor currently online, or a null pointer
     *         if there are none.
     */
    static FirstHumidity(): YHumidity | null;
    /**
     * Starts the enumeration of humidity sensors currently accessible.
     * Use the method YHumidity.nextHumidity() to iterate on
     * next humidity sensors.
     *
     * @param yctx : a YAPI context.
     *
     * @return a pointer to a YHumidity object, corresponding to
     *         the first humidity sensor currently online, or a null pointer
     *         if there are none.
     */
    static FirstHumidityInContext(yctx: YAPIContext): YHumidity | null;
}
export declare namespace YHumidity {
    interface ValueCallback {
        (func: YHumidity, value: string): void;
    }
    interface TimedReportCallback {
        (func: YHumidity, measure: YMeasure): void;
    }
}
