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%% set_code
% set the script of an embedded matlab block to an inputed
% string of eml code, create the inputs and outputs for the
% subsystem to connect to the eml block
% inputs:
% block_handle:handle - handle block to update
% code:string - eml code
% function_name:string - name of the function
% outputs:
% eml_handle:handle - handle of eml block, as this function may
% create a new block.
function eml_handle = set_code(block_handle,code,function_name)
% unlink the block from the library, this is necessary if
% we
% want to change the subsystem of the block.
set_param(block_handle,'LinkStatus','none')
% determine if the name already exists in the model
if (~strcmp(get(block_handle,'Name'),function_name))
try
set_param(block_handle,'Name',function_name);
catch exception
msgbox(exception.message);
end
end
% embedded matlab code block store code in stateflow states so
% we need to get the root hande
S = sfroot;
% get the path of the code block
code_block = sprintf('%s/code',getfullname(block_handle));
% determine if code block already exists
code_blocks = find_system(getfullname(block_handle),'LookUnderMasks','all','BlockType','SubSystem','Name','code');
% if the code block does not already exists we need to create a
% new one
if (isempty(code_blocks))
code_blocks = add_block('simulink/User-Defined Functions/Embedded MATLAB Function',code_block);
end
eml_handle = code_blocks
% find the state of the code block and update it to the new
% code
myState = S.find('-isa','Stateflow.EMChart', '-and', 'Path', code_block); % find which one we want to edit
if (~isempty(myState))
myState.Script = sprintf('%s',code);
end
% delete any lines that are unconnected and one end or both
% code from
% http://www.mathworks.com/matlabcentral/fileexchange/12352-delete-unconnected-lines
% Copyright (c) 2009, Per-Anders Ekström
% delete all the lines
lines = find_system( getfullname(block_handle), ...
'LookUnderMasks', 'all', ...
'FindAll', 'on', ...
'Type', 'line' ) ;
% for each line, call delete_recursive if handle still exist
for i=1:length( lines )
if ishandle( lines( i ) )
TableBlock.delete_recursive( lines( i ) )
end
end
% end copyright
% we need to determine which of the inports and outports we
% need to create and delete. Whenever we delete a port anything
% connected with this port is unconnected, other blocks, scopes
% etc. We would like to avoid this if possible because it can
% be quite annoying.
% First loop through all the inport blocks, if there does not
% exists an inport in the code block of the same name then
% delete the inport block
inports = find_system(getfullname(block_handle),'LookUnderMasks','all','SearchDepth',1,'FindAll','On','BlockType','Inport');
for i=1:size(inports,1)
found = 0;
in_handles=find_system(code_block, 'SearchDepth',1,'FindAll','On','FollowLinks','On','LookUnderMasks','All','BlockType','Inport');
for j=1:size(in_handles,1)
if strcmp(get_param(inports(i),'Name'),get_param(in_handles(j),'Name'))
found = 1;
end
end
if (~found)
% old inport no longer exists
delete_block(inports(i));
end
end
% now we loop through all the inports in the code block if
% there is an inport block of the same name then connect them,
% else create a new inport block and connect them
in_handles=find_system(code_block, 'SearchDepth',1,'FindAll','On','FollowLinks','On','LookUnderMasks','All','BlockType','Inport');
for j = 1:size(in_handles,1)
found = 0;
inports = find_system(getfullname(block_handle),'LookUnderMasks','all','SearchDepth',1,'BlockType','Inport');
for i = 1:size(inports,1)
if strcmp(get_param(inports(i),'Name'),get_param(in_handles(j),'Name'))
found = 1;
% draw the line
new_port_num = sprintf('%s/1',get_param(in_handles(j),'Name'));
dest_port = sprintf('%s/%d','code',j);
try
add_line(getfullname(block_handle),new_port_num,dest_port);
end
end
end
if (~found)
new_port = sprintf('%s/%s',getfullname(block_handle),get_param(in_handles(j),'Name'));
add_block('simulink/Sources/In1',new_port)
new_port_num = sprintf('%s/1',get_param(in_handles(j),'Name'));
dest_port = sprintf('%s/%d','code',j);
% sometimes line will be created automatically
try
add_line(getfullname(block_handle),new_port_num,dest_port);
end
end
end
% Next we do the same thing with the outputs
outports = find_system(getfullname(block_handle),'LookUnderMasks','all','SearchDepth',1,'FindAll','On','BlockType','Outport');
for i=1:size(outports,1)
found = 0;
out_handles=find_system(code_block, 'SearchDepth',1,'FindAll','On','FollowLinks','On','LookUnderMasks','All','BlockType','Outport');
for j=1:size(out_handles,1)
if strcmp(get_param(outports(i),'Name'),get_param(out_handles(j),'Name'))
found = 1;
end
end
if (~found)
% old inport no longer exists
delete_block(outports(i));
end
end
out_handles=find_system(code_block, 'SearchDepth',1,'FindAll','On','FollowLinks','On','LookUnderMasks','All','BlockType','Outport');
for j = 1:size(out_handles,1)
found = 0;
outports = find_system(getfullname(block_handle),'LookUnderMasks','all','SearchDepth',1,'BlockType','Outport');
for i = 1:size(outports,1)
if strcmp(get_param(outports(i),'Name'),get_param(out_handles(j),'Name'))
found = 1;
% draw the line
new_port_num = sprintf('%s/1',get_param(out_handles(j),'Name'));
dest_port = sprintf('%s/%d','code',j);
try
add_line(getfullname(block_handle),dest_port,new_port_num);
end
end
end
if (~found)
new_port = sprintf('%s/%s',getfullname(block_handle),get_param(out_handles(j),'Name'));
add_block('simulink/Sinks/Out1',new_port)
new_port_num = sprintf('%s/1',get_param(out_handles(j),'Name'));
dest_port = sprintf('%s/%d','code',j);
try
add_line(getfullname(block_handle),dest_port,new_port_num);
end
end
end
% delete any lines that are unconnected and one end or both
% again sometimes extra lines are created
% code from
% http://www.mathworks.com/matlabcentral/fileexchange/12352-delete-unconnected-lines
% Copyright (c) 2009, Per-Anders Ekström
% delete all the lines
lines = find_system( getfullname(block_handle), ...
'LookUnderMasks', 'all', ...
'FindAll', 'on', ...
'Type', 'line' ) ;
% for each line, call delete_recursive if handle still exist
for i=1:length( lines )
if ishandle( lines( i ) )
TableBlock.delete_recursive( lines( i ) )
end
end
% end copyright
end