www.gusucode.com > rtwdemos 工具箱matlab源码程序 > rtwdemos/rtwdemo_lct_ndarray_script.m
%% Multi-Dimensional Signals % This example shows you how to use the Legacy Code Tool to integrate legacy C % functions with Multi-Dimensional Signals. % % The Legacy Code Tool allows you to: % % * Provide the legacy function specification, % * Generate a C-MEX S-function that is used during simulation to call the legacy code, and % * Compile and build the generated S-function for simulation. % * Generate a block TLC file and optional rtwmakecfg.m file that is used during code generation to call the legacy code. % % Copyright 1990-2012 The MathWorks, Inc. %% Providing the Legacy Function Specification % Functions provided with the Legacy Code Tool take a specific data % structure or array of structures as the argument. The data structure is % initialized by calling the function legacy_code() using 'initialize' as the % first input. After initializing the structure, you have to assign its % properties to values corresponding to the legacy code being integrated. % For detailed help on the properties, call % <matlab:legacy_code('help') legacy_code('help')>. The % prototype of the legacy functions being called in this example are: % % void array3d_add(real_T *y1, real_T *u1, real_T *u2, int32_T nbRows, int32_T nbCols, int32_T nbPages); % % where real_T is a typedef to double, and int32_T is a typedef to a % 32-bit integer. The legacy source code is found in the % files <matlab:rtwdemo_lct_util('edit','rtwdemo_lct_src/ndarray_ops.h') ndarray_ops.h>, and % <matlab:rtwdemo_lct_util('edit','rtwdemo_lct_src/ndarray_ops.c') ndarray_ops.c>. % rtwdemo_sfun_ndarray_add def = legacy_code('initialize'); def.SFunctionName = 'rtwdemo_sfun_ndarray_add'; def.OutputFcnSpec = ['void array3d_add(double y1[size(u1,1)][size(u1,2)][size(u1,3)], ',... 'double u1[][][], double u2[][][], ' ... 'int32 size(u1,1), int32 size(u1,2), int32 size(u1,3))']; def.HeaderFiles = {'ndarray_ops.h'}; def.SourceFiles = {'ndarray_ops.c'}; def.IncPaths = {'rtwdemo_lct_src'}; def.SrcPaths = {'rtwdemo_lct_src'}; %% % where y1 is a 3-D output signal of same dimensions as the 3-D input signal % u1. Note that the last 3 arguments passed to the legacy function % correspond to the number of element in each dimension of the 3-D input % signal u1. %% Generating S-Functions for Use During Simulation % The function legacy_code() is called again with the first input set to % 'sfcn_cmex_generate' in order to automatically generate C-MEX S-function % according to the description provided by the input argument 'def'. % This S-function is used to call the legacy function in simulation. % The source code for the S-function is found in the file % <matlab:rtwdemo_lct_util('edit','rtwdemo_sfun_ndarray_add.c') rtwdemo_sfun_ndarray_add.c>. legacy_code('sfcn_cmex_generate', def); %% Compiling the Generated S-Function for Simulation % After the C-MEX S-function source files are generated, the function % legacy_code() is called again with the first input set to 'compile' in order % to compile the S-function for simulation with Simulink(R). legacy_code('compile', def); %% Generating a TLC Block File for Code Generation % After the S-function is compiled and used in simulation, the function % legacy_code() can be called again with the first input set to % 'sfcn_tlc_generate' in order to generate a TLC block file to support % code generation through Simulink(R) Coder(TM). Code generation will fail % if the TLC block file is not created and you try to generate code for a model % that includes the S-function. The TLC block file for the S-function is: % <matlab:rtwdemo_lct_util('edit','rtwdemo_sfun_ndarray_add.tlc') rtwdemo_sfun_ndarray_add.tlc>. legacy_code('sfcn_tlc_generate', def); %% Generating an rtwmakecfg.m File for Code Generation % After the TLC block file is created, the function % legacy_code() can be called again with the first input set to % 'rtwmakecfg_generate' in order to generate an rtwmakecfg.m file to support % code generation through Simulink(R) Coder(TM). Generate the rtwmakecfg.m % file if the required source and header files for the S-functions are not % in the same directory as the S-functions, and you want to add these % dependencies in the makefile produced during code generation. legacy_code('rtwmakecfg_generate', def); %% Generating a masked S-Function block for calling the generated S-Function % After the C-MEX S-function source is compiled, the function % legacy_code() can be called again with the first input set to 'slblock_generate' in order % to generate a masked S-function block that is configured to call that % S-function. The block is placed in a new model and can be copied to an % existing model. % legacy_code('slblock_generate', def); %% Showing the Generated Integration with Legacy Code % The model <matlab:rtwdemo_lct_ndarray rtwdemo_lct_ndarray> % shows integration with the legacy % code. The subsystem ndarray_add serves as a harness for the call to the % legacy C function. open_system('rtwdemo_lct_ndarray') open_system('rtwdemo_lct_ndarray/ndarray_add') sim('rtwdemo_lct_ndarray')