72 lines
2.6 KiB
Matlab
72 lines
2.6 KiB
Matlab
function varargout = mcaget(varargin)
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%MCAGET - read values from PV's
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%
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% VALUE = MCAGET(HANDLE) returns a value of a PV specified by integer HANDLE.
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% Type of return value depends on the native type and the number of elements
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% in the EPICS record:
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%
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% EPICS strings are returned as MATLAB strings
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% EPICS array of strings - MATLAB cell array of strings
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% All numeric EPICS types are returned as MATLAB double arrays
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%
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% VALUES = MCAGET(HANDLES) an easy get for a group of scalar numeric PV's
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% HANDLES - array of handles
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% VALUES - numeric array of values.
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% If any of the PVs is a waveform,
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% only the first element is returned
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%
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% [VALUE1, ... VALUEN] = MCAGET(HANDLE1, ... , HANDLEN)
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% returns values of multiple PV's of any type and length
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% Number of outputs must match the number of inputs
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%
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% Error handling:
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% A matlab exception will be thrown when any of the PVs are invalid,
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% i.e. not the result of a successful MCAOPEN.
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% Furthermore, an error can result from a 'get' timeout,
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% configurable via MCATIMEOUT.
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% In addition, an error can result from a network disconnect.
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% In principle, one can check beforehand via MCASTATE, but since
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% a disconnect might happen just between the sucessful MCASTATE call
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% and the following MCAGET, the only safe thing might be to surround
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% MCAGET calls with TRY....CATCH.
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%
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% See also TRY, CATCH, MCASTATE, MCATIMEOUT, MCAPUT
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if nargin<1
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error('No arguments were specified in mcaget')
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elseif nargin==1
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if length(varargin{1})>1
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[a, isallOK]=mocha('getScalarArray', varargin{1}, 'double');
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varargout{1} = [a]; %mocha('getScalarArray', varargin{1}); %mca(51,varargin{1});
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else
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chInfo=mocha('getInfo', varargin{1});
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if( strcmp(chInfo.dataType,'DBR_ENUM') )
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varargout{1} = mocha('get', varargin{1},'double');
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else
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varargout{1} = mocha('get', varargin{1}); %mca(50,varargin{1});
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end
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end
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elseif nargin>1
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if nargin ~= nargout
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error('Number of outputs must match the number of inputs')
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end
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[a, isallOK]=mocha('getStructArray', [varargin{:}]);
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for k=1:length(a)
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chInfo=mocha('getInfo', varargin{k});
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if( length(a(k).val) ==1 && strcmp(chInfo.dataType,'DBR_ENUM') )
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varargout{k}=mocha('getCache', varargin{k}, 'double');
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%if (length(a(k).val)==1 && iscell(a(k).val))
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% varargout{k}=a(k).val{1};
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else
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if (length(a(k).val)==1 && iscell(a(k).val))
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varargout{k}=a(k).val{1};
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else
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varargout{k}=a(k).val;
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end
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end
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end
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%[varargout{1:nargin}] mca(50,varargin{:});
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end
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