www.gusucode.com > simulinkcoder 案例源码程序 matlab代码 > simulinkcoder/IntegrateExCFuncsThatPassArgsAsMultiDimSignalsExample.m
%% Integrate External C Functions That Pass Arguments as Multi-Dimensional Signals % This example shows how to use the Legacy Code Tool to integrate legacy C % functions with multi-dimensional Signals. % % With the Legacy Code Tool, you can: % % * Provide the legacy function specification. % * Generate a C-MEX S-function that calls the legacy code during % simulation. % * Compile and build the generated S-function for simulation. % * Generate a TLC block file and optional rtwmakecfg.m file that specifies % how the generated code for a model calls the legacy code. % % Copyright 1990-2015 The MathWorks, Inc. %% Provide the Legacy Function Specification % Legacy Code Tool functions take a specific data structure or array of % structures as the argument. You can initialize the data structure by % calling the function legacy_code() using 'initialize' as the first input. % After initializing the structure, 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 is: % % void array3d_add(real_T *y1, real_T *u1, real_T *u2, int32_T nbRows, int32_T nbCols, int32_T nbPages); % % real_T is a typedef to double, and int32_T is a typedef to a % 32-bit integer. The legacy source code is 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'}; %% % 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. %% Generate an S-Function for Simulation % To generate a C-MEX S-function according to the description provided by % the input argument 'def', call the function legacy_code() again with the % first input set to 'sfcn_cmex_generate'. The S-function calls the legacy % functions during simulation. % The source code for the S-function is in the file % <matlab:rtwdemo_lct_util('edit','rtwdemo_sfun_ndarray_add.c') rtwdemo_sfun_ndarray_add.c>. legacy_code('sfcn_cmex_generate', def); %% Compile the Generated S-Function for Simulation % After you generate the C-MEX S-function source file, to compile the % S-function for simulation with Simulink(R), call the function % legacy_code() again with the first input set to 'compile'. legacy_code('compile', def); %% Generate a TLC Block File for Code Generation % After you compile the S-function and use it in simulation, you can call % the function legacy_code() again with the first input set to % 'sfcn_tlc_generate' to generate a TLC block file. The block file % specifies how the generated code for a model calls the legacy code. If % you do not generate a TLC block file and you try to generate code for a % model that includes the S-function, code generation fails. 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); %% Generate an rtwmakecfg.m File for Code Generation % After you create the TLC block file, you can call the function % legacy_code() again with the first input set to 'rtwmakecfg_generate' to % generate an rtwmakecfg.m file to support code generation. If the required % source and header files for the S-function are not in the same folder as % the S-function, and you want to add these dependencies in the makefile % produced during code generation, generate the rtwmakecfg.m file. legacy_code('rtwmakecfg_generate', def); %% Generate a Masked S-Function Block for Calling the Generated S-Function % After you compile the C-MEX S-function source, you can call the function % legacy_code() again with the first input set to 'slblock_generate' to % generate a masked S-function block that calls that S-function. The % software places the block in a new model. From there you can copy it 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 of the model 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')