MATLAB REAL-TIME WORKSHOP 7 - TARGET LANGUAGE COMPILER Manuale di Servizio Pagina 26
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2
Working with the Target Language
2-6
Compiler Directives
Syntax
A target language file consists of a series of statements of the form
%keyword [argument1, argument2, …]
where keyword represents one of the Target Language Compiler’s directives,
and
[argument1, argument2, …] represents expressions that define any
required parameters. For example,
%assign sysNumber = sysIdx + 1
uses the %assign directive to change the value of the sysNumber parameter.
A target language directive must be the first nonblank character on a line and
always begins with the
% character. Beginning a line with %% lets you include a
comment on a line.
Table 2-1 shows the complete set of TLC directives. The remainder of this
chapter describes each directive in detail.
Table 2-1: Target Language Compiler Directives
Type Construct
Comments
/% %/
%%
Target language
expressions
%<expression>
Formatting
%realformat string
- SIMULINK 1
- How to Contact The MathWorks: 2
- Contents 3
- Introduction 10
- Real-Time Workshop 12
- Target Language Compiler 12
- A Basic Example 13
- System Target Files 18
- Block Target Files 19
- Where to Go from Here 20
- Working with the 21
- Target Language 21
- The model.rtw File 23
- Compiler Directives 26
- Conditional inclusion 27
- Multiple inclusion 27
- Object-oriented 27
- Comments 28
- Line Continuation 29
- Target Language Values 30
- Target Language Expressions 33
- Formatting 37
- Conditional Inclusion 38
- %foreach 39
- Output File Control 47
- Input File Control 48
- Built-In Functions and Values 49
- FEVAL Function 55
- Macro Definition 57
- Identifier Definition 57
- Creating Records 59
- Variable Scoping 62
- Target Language Functions 64
- Filenames and Search Paths 71
- Target Language Debug Mode 71
- Writing Target 75
- Language Files 75
- Block Functions 81
- Coding Conventions 82
- Writing a Block Target File 89
- BlockTypeSetup(block, system) 90
- Enable(block, system) 91
- Disable(block, system) 91
- Start(block, system) 92
- Outputs(block, system) 92
- Update(block, system) 93
- Derivatives(block, system) 93
- Terminate(block, system) 93
- LibCacheDefine(buffer) 96
- LibIsDiscrete(tid) 96
- Writing Target Language Files 100
- The RTW TLC Function Library 101
- STRINGOF(value) 104
- EXISTS("name") 104
- SIZE(value, n) 104
- Inlining an S-Function 105
- An Example 106
- Unnecessary call to 108
- in foogain.c 108
- Configurable RTW Variables 114
- Matrix Parameters in RTW 115
- Loop Rolling 118
- Function Library Reference 123
- LibBlockFunctionExists 124
- LibBlockInputSignal 125
- LibBlockIWork 126
- LibBlockMatrixParameterAddr 127
- LibBlockMatrixParameter 128
- LibBlockMode 129
- LibBlockOutportLocation 130
- LibBlockOutputSignal 132
- LibBlockParameter 133
- LibBlockParameterAddr 135
- LibBlockPWork 136
- LibBlockRWork 137
- LibBlockSrcSignalIsDiscrete 138
- LibCacheDefine 139
- LibCacheFunctionPrototype 140
- LibCacheGlobalPrmData 141
- LibCacheInclude 142
- LibCacheNonFiniteAssignment 143
- LibContinuousState 144
- LibControlPortInputSignal 145
- LibConvertZCDirection 146
- Arguments 146
- Description 146
- LibDataInputPortWidth 147
- LibDataOutputPortWidth 148
- LibDataStoreMemory 149
- LibDeclareRollVariables 150
- See Also 151
- LibDefineIWork 152
- LibDefinePWork 153
- LibDefineRWork 154
- into block states 155
- LibExternalResetSignal 156
- LibHeaderFileCustomCode 157
- LibIndexStruct 158
- LibIsDiscrete 159
- LibIsEmpty 160
- LibIsEqual 161
- LibIsFinite 162
- LibMapSignalSource 163
- LibMaxBlockIOWidth 164
- LibMaxDataInputPortWidth 165
- LibMaxDataOutputPortWidth 166
- LibMdlRegCustomCode 167
- LibMdlStartCustomCode 168
- LibMdlTerminateCustomCode 169
- LibOptionalMatrixWidth 170
- LibOptionalVectorWidth 171
- LibPathName 172
- LibPrevZCState 173
- LibPrmFileCustomCode 174
- LibRegFileCustomCode 175
- LibRenameParameter 176
- LibSourceFileCustomCode 177
- LibSystemDerivativeCustomCode 178
- LibSystemDisableCustomCode 179
- LibSystemEnableCustomCode 180
- LibSystemInitializeCustomCode 181
- LibSystemOutputCustomCode 182
- LibSystemUpdateCustomCode 183
- Model.rtw File Contents 186
- SampleTime { 189
- ]. Only written if 193
- Parameter { 211
- ColIdxOfNonZeroD 237
- D matrix 237
- Error Messages 239
- Ambiguous reference to 242
- Unrecognized type " 259
- " for function 259
- Unterminated string 259
- option if the variable does 261
- Library Error Messages 263
- Invalid location: 267
- See model.rtw 276
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