custom library HX711 Index exceeds the number of array elements. Index must not exceed 2.

% Copyright 2018, Nicholas Giacoboni
%
% Redistribution and use in source and binary forms, with or without
% modification, are permitted provided that the following conditions are met:
%
% 1. Redistributions of source code must retain the above copyright
% notice, this list of conditions and the following disclaimer.
%
% 2. Redistributions in binary form must reproduce the above copyright
% notice, this list of conditions and the following disclaimer in the
% documentation and/or other materials provided with the distribution.
%
% THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
% AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
% WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
% IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
% INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
% NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
% PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
% WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
% ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
% OF SUCH DAMAGE.
%**************************************************************************
classdef basic_HX711 < matlabshared.addon.LibraryBase
properties(Access = protected)
Pins %Data and Clock pin
end
properties (Access = private, Constant = true)
READ_HX711 = hex2dec(’01’)
end
properties(Access = protected, Constant = true)
LibraryName = ‘basicHX711/basic_HX711’
DependentLibraries = {}
LibraryHeaderFiles = {}
CppHeaderFile = fullfile(arduinoio.FilePath(mfilename(‘fullpath’)), ‘src’, ‘basic_HX711.h’)
CppClassName = ‘basic_HX711’
end

methods(Hidden, Access = public)
function obj = basic_HX711(parentObj,inputPins)
obj.Parent = parentObj;
obj.Pins = getTerminalsFromPins(obj.Parent,inputPins);
configurePin(parentObj,inputPins{2},’DigitalInput’); % Data Pin
configurePin(parentObj,inputPins{3},’DigitalOutput’); % Clock Pin
end
end

methods(Access = public)
function force = read_HX711(obj)
cmdID = obj.READ_HX711;
inputs = obj.Pins;
value = sendCommand(obj, obj.LibraryName, cmdID, inputs);
value(3)=bitshift(value(3),16);
value(2)=bitshift(value(2),8);
force = bitor(value(3),bitor(value(2),value(1)));
end
end
end
%**************************************************************************

listArduinoLibraries

ans =

12×1 cell array

{‘APDS9960’ }
{‘Adafruit/MotorShieldV2’}
{‘CAN’ }
{‘I2C’ }
{‘MotorCarrier’ }
{‘RotaryEncoder’ }
{‘SPI’ }
{‘Serial’ }
{‘Servo’ }
{‘ShiftRegister’ }
{‘Ultrasonic’ }
{‘basicHX711/basic_HX711’}

a = arduino(‘COM6’, ‘Uno’, ‘Libraries’,’basicHX711/basic_HX711′,’ForceBuildOn’,’True’);
>> Loadcell = addon(a,’basicHX711/basic_HX711′,{‘D2′,’D3’})
Index exceeds the number of array elements. Index must not exceed 2.
%**************************************************************************

I’m currently working on creating a custom library for the HX711 sensor, but I’m encountering an issue with the ‘Index exceeds the number of array elements. Index must not exceed 2.’ I hope someone can help me troubleshoot.% Copyright 2018, Nicholas Giacoboni
%
% Redistribution and use in source and binary forms, with or without
% modification, are permitted provided that the following conditions are met:
%
% 1. Redistributions of source code must retain the above copyright
% notice, this list of conditions and the following disclaimer.
%
% 2. Redistributions in binary form must reproduce the above copyright
% notice, this list of conditions and the following disclaimer in the
% documentation and/or other materials provided with the distribution.
%
% THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
% AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
% WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
% IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
% INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
% NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
% PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
% WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
% ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
% OF SUCH DAMAGE.
%**************************************************************************
classdef basic_HX711 < matlabshared.addon.LibraryBase
properties(Access = protected)
Pins %Data and Clock pin
end
properties (Access = private, Constant = true)
READ_HX711 = hex2dec(’01’)
end
properties(Access = protected, Constant = true)
LibraryName = ‘basicHX711/basic_HX711’
DependentLibraries = {}
LibraryHeaderFiles = {}
CppHeaderFile = fullfile(arduinoio.FilePath(mfilename(‘fullpath’)), ‘src’, ‘basic_HX711.h’)
CppClassName = ‘basic_HX711’
end

listArduinoLibraries

ans =

12×1 cell array

I’m currently working on creating a custom library for the HX711 sensor, but I’m encountering an issue with the ‘Index exceeds the number of array elements. Index must not exceed 2.’ I hope someone can help me troubleshoot. % Copyright 2018, Nicholas Giacoboni
%
% Redistribution and use in source and binary forms, with or without
% modification, are permitted provided that the following conditions are met:
%
% 1. Redistributions of source code must retain the above copyright
% notice, this list of conditions and the following disclaimer.
%
% 2. Redistributions in binary form must reproduce the above copyright
% notice, this list of conditions and the following disclaimer in the
% documentation and/or other materials provided with the distribution.
%
% THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
% AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
% WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
% IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
% INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
% NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
% PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
% WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
% ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
% OF SUCH DAMAGE.
%**************************************************************************
classdef basic_HX711 < matlabshared.addon.LibraryBase
properties(Access = protected)
Pins %Data and Clock pin
end
properties (Access = private, Constant = true)
READ_HX711 = hex2dec(’01’)
end
properties(Access = protected, Constant = true)
LibraryName = ‘basicHX711/basic_HX711’
DependentLibraries = {}
LibraryHeaderFiles = {}
CppHeaderFile = fullfile(arduinoio.FilePath(mfilename(‘fullpath’)), ‘src’, ‘basic_HX711.h’)
CppClassName = ‘basic_HX711’
end

listArduinoLibraries

ans =

12×1 cell array

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