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yocto_segmenteddisplay.py
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yocto_segmenteddisplay.py
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#*********************************************************************
#*
#* $Id: yocto_segmenteddisplay.py 23243 2016-02-23 14:13:12Z seb $
#*
#* Implements yFindSegmentedDisplay(), the high-level API for SegmentedDisplay 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 *
#--- (YSegmentedDisplay class start)
#noinspection PyProtectedMember
class YSegmentedDisplay(YFunction):
"""
The SegmentedDisplay class allows you to drive segmented displays.
"""
#--- (end of YSegmentedDisplay class start)
#--- (YSegmentedDisplay return codes)
#--- (end of YSegmentedDisplay return codes)
#--- (YSegmentedDisplay dlldef)
#--- (end of YSegmentedDisplay dlldef)
#--- (YSegmentedDisplay definitions)
DISPLAYEDTEXT_INVALID = YAPI.INVALID_STRING
DISPLAYMODE_DISCONNECTED = 0
DISPLAYMODE_MANUAL = 1
DISPLAYMODE_AUTO1 = 2
DISPLAYMODE_AUTO60 = 3
DISPLAYMODE_INVALID = -1
#--- (end of YSegmentedDisplay definitions)
def __init__(self, func):
super(YSegmentedDisplay, self).__init__(func)
self._className = 'SegmentedDisplay'
#--- (YSegmentedDisplay attributes)
self._callback = None
self._displayedText = YSegmentedDisplay.DISPLAYEDTEXT_INVALID
self._displayMode = YSegmentedDisplay.DISPLAYMODE_INVALID
#--- (end of YSegmentedDisplay attributes)
#--- (YSegmentedDisplay implementation)
def _parseAttr(self, member):
if member.name == "displayedText":
self._displayedText = member.svalue
return 1
if member.name == "displayMode":
self._displayMode = member.ivalue
return 1
super(YSegmentedDisplay, self)._parseAttr(member)
def get_displayedText(self):
"""
Returns the text currently displayed on the screen.
@return a string corresponding to the text currently displayed on the screen
On failure, throws an exception or returns YSegmentedDisplay.DISPLAYEDTEXT_INVALID.
"""
if self._cacheExpiration <= YAPI.GetTickCount():
if self.load(YAPI.DefaultCacheValidity) != YAPI.SUCCESS:
return YSegmentedDisplay.DISPLAYEDTEXT_INVALID
return self._displayedText
def set_displayedText(self, newval):
"""
Changes the text currently displayed on the screen.
@param newval : a string corresponding to the text currently displayed on the screen
@return YAPI.SUCCESS if the call succeeds.
On failure, throws an exception or returns a negative error code.
"""
rest_val = newval
return self._setAttr("displayedText", rest_val)
def get_displayMode(self):
if self._cacheExpiration <= YAPI.GetTickCount():
if self.load(YAPI.DefaultCacheValidity) != YAPI.SUCCESS:
return YSegmentedDisplay.DISPLAYMODE_INVALID
return self._displayMode
def set_displayMode(self, newval):
rest_val = str(newval)
return self._setAttr("displayMode", rest_val)
@staticmethod
def FindSegmentedDisplay(func):
"""
Retrieves a segmented display 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 segmented displays is online at the time
it is invoked. The returned object is nevertheless valid.
Use the method YSegmentedDisplay.isOnline() to test if the segmented displays is
indeed online at a given time. In case of ambiguity when looking for
a segmented display 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 segmented displays
@return a YSegmentedDisplay object allowing you to drive the segmented displays.
"""
# obj
obj = YFunction._FindFromCache("SegmentedDisplay", func)
if obj is None:
obj = YSegmentedDisplay(func)
YFunction._AddToCache("SegmentedDisplay", func, obj)
return obj
def nextSegmentedDisplay(self):
"""
Continues the enumeration of segmented displays started using yFirstSegmentedDisplay().
@return a pointer to a YSegmentedDisplay object, corresponding to
a segmented display currently online, or a None pointer
if there are no more segmented displays to enumerate.
"""
hwidRef = YRefParam()
if YAPI.YISERR(self._nextFunction(hwidRef)):
return None
if hwidRef.value == "":
return None
return YSegmentedDisplay.FindSegmentedDisplay(hwidRef.value)
#--- (end of YSegmentedDisplay implementation)
#--- (SegmentedDisplay functions)
@staticmethod
def FirstSegmentedDisplay():
"""
Starts the enumeration of segmented displays currently accessible.
Use the method YSegmentedDisplay.nextSegmentedDisplay() to iterate on
next segmented displays.
@return a pointer to a YSegmentedDisplay object, corresponding to
the first segmented displays 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("SegmentedDisplay", 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 YSegmentedDisplay.FindSegmentedDisplay(serialRef.value + "." + funcIdRef.value)
#--- (end of SegmentedDisplay functions)

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