Callback Functions for Custom Reference Design doesn't work

Hello,

Define Custom Parameters and Callback Functions for Custom Reference Design described at link https://it.mathworks.com/help/hdlcoder/ug/define-custom-reference-design-with-custom-parameters-and-callback-functions.html works well only if the path has only one package folder (e.g. .../+my_ref_design/callback_CustomizeReferenceDesign.m)

function hRD = plugin_rd()
% ....
    hRD.addParameter( ...
    'ParameterID',   'param', ...
    'DisplayName',   'DispName', ...
    'DefaultValue',  'On', ...
    'ParameterType',  hdlcoder.ParameterType.Dropdown, ...
    'Choice',       {'On','Off'});
 hRD.CustomizeReferenceDesignFcn  =@my_ref_design.callback_CustomizeReferenceDesign;
end

if the board path is .../+my_board/+my_ref_design/ callback_CustomizeReferenceDesign.m

and

function hRD = plugin_rd()
% ....
    hRD.addParameter( ...
    'ParameterID',   'param', ...
    'DisplayName',   'DispName', ...
    'DefaultValue',  'On', ...
    'ParameterType',  hdlcoder.ParameterType.Dropdown, ...
    'Choice',       {'On','Off'});
 hRD.CustomizeReferenceDesignFcn  =@my_board.my_ref_design.callback_CustomizeReferenceDesign;
end	

the hdl workflow advisor (1.1. Set Target Device and Synthesis Tool in) gives the following error

Warning: Invalid plugin "MyBoardRegistration.Vivado2021_2.plugin_rd" is detected with error message "Function
callback_CustomizeReferenceDesign does not exist.". 
> In hdlturnkey.plugin/PluginListBase/reportInvalidPlugin
In hdlturnkey.plugin/ReferenceDesignList/buildRDList
In hdlturnkey.ip/IPDriver/initIPPlatform
In downstream.DownstreamIntegrationDriver/loadIPPlatform
In downstream.DownstreamIntegrationDriver/initBoard
In downstream.DownstreamIntegrationDriver/setBoardName
In downstream.DownstreamIntegrationDriver/setOptionValue
In downstream.DownstreamIntegrationDriver/set
In paramTargetDevice
In ModelAdvisor.Node/handleCheckEvent

surely the error is here

hRD.CustomizeReferenceDesignFcn  =@my_board.my_ref_design.callback_CustomizeReferenceDesign;

but I don't know the right syntax

[borzack]

solved with

rehash toolbox

detail here https://it.mathworks.com/matlabcentral/answers/480267-error-unable-to-resolve-name-issue

Answer 1

[Wang Chen]

Hi borzack,

As you commented, this is likely caused by that MATLAB cannot find my_board.my_ref_design.callback_CustomizeReferenceDesign on MATLAB search path. rehash toolbox will refresh MATLAB search path and fix this issue.

Your syntax on the callback function specification is correct.

Thanks,

Wang