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yocto_latitude.py
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yocto_latitude.py
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#*********************************************************************
#*
#* $Id: yocto_latitude.py 23243 2016-02-23 14:13:12Z seb $
#*
#* Implements yFindLatitude(), the high-level API for Latitude 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.
#*
#* You may reproduce and distribute copies of this file in
#* 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.
#*
#* You should refer to Yoctopuce General Terms and Conditions
#* for additional information regarding your rights and
#* obligations.
#*
#* THE SOFTWARE AND DOCUMENTATION ARE PROVIDED 'AS IS' WITHOUT
#* WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING
#* WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY, FITNESS
#* FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO
#* EVENT SHALL LICENSOR BE LIABLE FOR ANY INCIDENTAL, SPECIAL,
#* INDIRECT OR CONSEQUENTIAL DAMAGES, LOST PROFITS OR LOST DATA,
#* COST OF PROCUREMENT OF SUBSTITUTE GOODS, TECHNOLOGY OR
#* SERVICES, ANY CLAIMS BY THIRD PARTIES (INCLUDING BUT NOT
#* LIMITED TO ANY DEFENSE THEREOF), ANY CLAIMS FOR INDEMNITY OR
#* CONTRIBUTION, OR OTHER SIMILAR COSTS, WHETHER ASSERTED ON THE
#* BASIS OF CONTRACT, TORT (INCLUDING NEGLIGENCE), BREACH OF
#* WARRANTY, OR OTHERWISE.
#*
#*********************************************************************/
__docformat__ = 'restructuredtext en'
from yocto_api import *
#--- (YLatitude class start)
#noinspection PyProtectedMember
class YLatitude(YSensor):
"""
The Yoctopuce class YLatitude allows you to read the latitude from Yoctopuce
geolocalization sensors. It inherits from the YSensor class the core functions to
read measurements, register callback functions, access the autonomous
datalogger.
"""
#--- (end of YLatitude class start)
#--- (YLatitude return codes)
#--- (end of YLatitude return codes)
#--- (YLatitude dlldef)
#--- (end of YLatitude dlldef)
#--- (YLatitude definitions)
#--- (end of YLatitude definitions)
def __init__(self, func):
super(YLatitude, self).__init__(func)
self._className = 'Latitude'
#--- (YLatitude attributes)
self._callback = None
#--- (end of YLatitude attributes)
#--- (YLatitude implementation)
def _parseAttr(self, member):
super(YLatitude, self)._parseAttr(member)
@staticmethod
def FindLatitude(func):
"""
Retrieves a latitude 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 latitude sensor is online at the time
it is invoked. The returned object is nevertheless valid.
Use the method YLatitude.isOnline() to test if the latitude sensor is
indeed online at a given time. In case of ambiguity when looking for
a latitude 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 func : a string that uniquely characterizes the latitude sensor
@return a YLatitude object allowing you to drive the latitude sensor.
"""
# obj
obj = YFunction._FindFromCache("Latitude", func)
if obj is None:
obj = YLatitude(func)
YFunction._AddToCache("Latitude", func, obj)
return obj
def nextLatitude(self):
"""
Continues the enumeration of latitude sensors started using yFirstLatitude().
@return a pointer to a YLatitude object, corresponding to
a latitude sensor currently online, or a None pointer
if there are no more latitude sensors to enumerate.
"""
hwidRef = YRefParam()
if YAPI.YISERR(self._nextFunction(hwidRef)):
return None
if hwidRef.value == "":
return None
return YLatitude.FindLatitude(hwidRef.value)
#--- (end of YLatitude implementation)
#--- (Latitude functions)
@staticmethod
def FirstLatitude():
"""
Starts the enumeration of latitude sensors currently accessible.
Use the method YLatitude.nextLatitude() to iterate on
next latitude sensors.
@return a pointer to a YLatitude object, corresponding to
the first latitude sensor currently online, or a None pointer
if there are none.
"""
devRef = YRefParam()
neededsizeRef = YRefParam()
serialRef = YRefParam()
funcIdRef = YRefParam()
funcNameRef = YRefParam()
funcValRef = YRefParam()
errmsgRef = YRefParam()
size = YAPI.C_INTSIZE
#noinspection PyTypeChecker,PyCallingNonCallable
p = (ctypes.c_int * 1)()
err = YAPI.apiGetFunctionsByClass("Latitude", 0, p, size, neededsizeRef, errmsgRef)
if YAPI.YISERR(err) or not neededsizeRef.value:
return None
if YAPI.YISERR(
YAPI.yapiGetFunctionInfo(p[0], devRef, serialRef, funcIdRef, funcNameRef, funcValRef, errmsgRef)):
return None
return YLatitude.FindLatitude(serialRef.value + "." + funcIdRef.value)
#--- (end of Latitude functions)

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