/*********************************************************************
 *
 *  $Id: yocto_longitude.h 41625 2020-08-31 07:09:39Z seb $
 *
 *  Declares yFindLongitude(), the high-level API for Longitude functions
 *
 *  - - - - - - - - - License information: - - - - - - - - -
 *
 *  Copyright (C) 2011 and beyond by Yoctopuce Sarl, Switzerland.
 *
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 *  non-exclusive license to use, modify, copy and integrate this
 *  file into your software for the sole purpose of interfacing
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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
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 *  for additional information regarding your rights and
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#include "yocto_api.h"
CF_EXTERN_C_BEGIN
NS_ASSUME_NONNULL_BEGIN

@class YLongitude;

//--- (YLongitude globals)
typedef void (*YLongitudeValueCallback)(YLongitude *func, NSString *functionValue);
typedef void (*YLongitudeTimedReportCallback)(YLongitude *func, YMeasure *measure);
//--- (end of YLongitude globals)

//--- (YLongitude class start)
/**
 * YLongitude Class: longitude sensor control interface, available for instance in the Yocto-GPS-V2
 *
 * The YLongitude class allows you to read and configure Yoctopuce longitude sensors.
 * It inherits from YSensor class the core functions to read measurements,
 * to register callback functions, and to access the autonomous datalogger.
 */
@interface YLongitude : YSensor
//--- (end of YLongitude class start)
{
@protected
//--- (YLongitude attributes declaration)
    YLongitudeValueCallback _valueCallbackLongitude;
    YLongitudeTimedReportCallback _timedReportCallbackLongitude;
//--- (end of YLongitude attributes declaration)
}
// Constructor is protected, use yFindLongitude factory function to instantiate
-(id)    initWith:(NSString*) func;

//--- (YLongitude private methods declaration)
// Function-specific method for parsing of JSON output and caching result
-(int)             _parseAttr:(yJsonStateMachine*) j;

//--- (end of YLongitude private methods declaration)
//--- (YLongitude yapiwrapper declaration)
//--- (end of YLongitude yapiwrapper declaration)
//--- (YLongitude public methods declaration)
/**
 * Retrieves a longitude sensor for a given identifier.
 * The identifier can be specified using several formats:
 * <ul>
 * <li>FunctionLogicalName</li>
 * <li>ModuleSerialNumber.FunctionIdentifier</li>
 * <li>ModuleSerialNumber.FunctionLogicalName</li>
 * <li>ModuleLogicalName.FunctionIdentifier</li>
 * <li>ModuleLogicalName.FunctionLogicalName</li>
 * </ul>
 *
 * This function does not require that the longitude sensor is online at the time
 * it is invoked. The returned object is nevertheless valid.
 * Use the method YLongitude.isOnline() to test if the longitude sensor is
 * indeed online at a given time. In case of ambiguity when looking for
 * a longitude 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 longitude sensor, for instance
 *         YGNSSMK2.longitude.
 *
 * @return a YLongitude object allowing you to drive the longitude sensor.
 */
+(YLongitude*)     FindLongitude:(NSString*)func;

/**
 * Registers the callback function that is invoked on every change of advertised value.
 * 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 nil pointer as argument.
 *
 * @param callback : the callback function to call, or a nil 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
 */
-(int)     registerValueCallback:(YLongitudeValueCallback _Nullable)callback;

-(int)     _invokeValueCallback:(NSString*)value;

/**
 * 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 nil pointer as argument.
 *
 * @param callback : the callback function to call, or a nil 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
 */
-(int)     registerTimedReportCallback:(YLongitudeTimedReportCallback _Nullable)callback;

-(int)     _invokeTimedReportCallback:(YMeasure*)value;


/**
 * Continues the enumeration of longitude sensors started using yFirstLongitude().
 * Caution: You can't make any assumption about the returned longitude sensors order.
 * If you want to find a specific a longitude sensor, use Longitude.findLongitude()
 * and a hardwareID or a logical name.
 *
 * @return a pointer to a YLongitude object, corresponding to
 *         a longitude sensor currently online, or a nil pointer
 *         if there are no more longitude sensors to enumerate.
 */
-(nullable YLongitude*) nextLongitude
NS_SWIFT_NAME(nextLongitude());
/**
 * Starts the enumeration of longitude sensors currently accessible.
 * Use the method YLongitude.nextLongitude() to iterate on
 * next longitude sensors.
 *
 * @return a pointer to a YLongitude object, corresponding to
 *         the first longitude sensor currently online, or a nil pointer
 *         if there are none.
 */
+(nullable YLongitude*) FirstLongitude
NS_SWIFT_NAME(FirstLongitude());
//--- (end of YLongitude public methods declaration)

@end

//--- (YLongitude functions declaration)
/**
 * Retrieves a longitude sensor for a given identifier.
 * The identifier can be specified using several formats:
 * <ul>
 * <li>FunctionLogicalName</li>
 * <li>ModuleSerialNumber.FunctionIdentifier</li>
 * <li>ModuleSerialNumber.FunctionLogicalName</li>
 * <li>ModuleLogicalName.FunctionIdentifier</li>
 * <li>ModuleLogicalName.FunctionLogicalName</li>
 * </ul>
 *
 * This function does not require that the longitude sensor is online at the time
 * it is invoked. The returned object is nevertheless valid.
 * Use the method YLongitude.isOnline() to test if the longitude sensor is
 * indeed online at a given time. In case of ambiguity when looking for
 * a longitude 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 longitude sensor, for instance
 *         YGNSSMK2.longitude.
 *
 * @return a YLongitude object allowing you to drive the longitude sensor.
 */
YLongitude* yFindLongitude(NSString* func);
/**
 * Starts the enumeration of longitude sensors currently accessible.
 * Use the method YLongitude.nextLongitude() to iterate on
 * next longitude sensors.
 *
 * @return a pointer to a YLongitude object, corresponding to
 *         the first longitude sensor currently online, or a nil pointer
 *         if there are none.
 */
YLongitude* yFirstLongitude(void);

//--- (end of YLongitude functions declaration)
NS_ASSUME_NONNULL_END
CF_EXTERN_C_END

