MPLAB C Compiler for PIC24 MCUs and dsPIC DSCs ... - Microchip

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16-Bit C Compiler User’s Guide B bit-field ‘identifier’ has invalid type Bit-fields must be of enumerated or integral type. bit-field ‘identifier’ width not an integer constant Bit-field widths must be integer constants. both long and short specified for ‘identifier’ A variable cannot be of type long and of type short. both signed and unsigned specified for ‘identifier’ A variable cannot be both signed and unsigned. braced-group within expression allowed only inside a function It is illegal to have a braced-group within expression outside a function. break statement not within loop or switch Break statements must only be used within a loop or switch. __builtin_longjmp second argument must be 1 __builtin_longjmp requires its second argument to be 1. C called object is not a function Only functions may be called in C. cannot convert to a pointer type The expression cannot be converted to a pointer type. cannot put object with volatile field into register It is not legal to put an object with a volatile field into a register. cannot reload integer constant operand in ‘asm’ The asm statement is invalid. cannot specify both near and far attributes The attributes near and far are mutually exclusive, only one may be used for a function or variable. cannot take address of bit-field ‘identifier’ It is not legal to attempt to take address of a bit-field. can’t open ‘file’ for writing The system cannot open the specified ‘file’. Possible causes are not enough disk space to open the file, the directory does not exist, or there is no write permission in the destination directory. can’t set ‘attribute’ attribute after definition The ‘attribute’ attribute must be used when the symbol is defined. case label does not reduce to an integer constant Case labels must be compile-time integer constants. case label not within a switch statement Case labels must be within a switch statement. cast specifies array type It is not permissible for a cast to specify an array type. DS51284H-page 166 © 2008 Microchip Technology Inc.
Diagnostics cast specifies function type It is not permissible for a cast to specify a function type. cast to union type from type not present in union When casting to a union type, do so from type present in the union. char-array initialized from wide string Char-arrays should not be initialized from wide strings. Use ordinary strings. file: compiler compiler not installed on this system Only the C compiler is distributed; other high-level languages are not supported. complex invalid for ‘identifier’ The complex qualifier may only be applied to integral and floating types. conflicting types for ‘identifier’ Multiple, inconsistent declarations exist for identifier. continue statement not within loop Continue statements must only be used within a loop. conversion to non-scalar type requested Type conversion must be to a scalar (not aggregate) type. D data type of ‘name’ isn’t suitable for a register The data type does not fit into the requested register. declaration for parameter ‘identifier’ but no such parameter Only parameters in the parameter list may be declared. declaration of ‘identifier’ as array of functions It is not legal to have an array of functions. declaration of ‘identifier’ as array of voids It is not legal to have an array of voids. ‘identifier’ declared as function returning a function Functions may not return functions. ‘identifier’ declared as function returning an array Functions may not return arrays. decrement of pointer to unknown structure Do not decrement a pointer to an unknown structure. ‘default’ label not within a switch statement Default case labels must be within a switch statement. ‘symbol’ defined both normally and as an alias A ‘symbol’ can not be used as an alias for another symbol if it has already been defined. ‘defined’ cannot be used as a macro name The macro name cannot be called ‘defined’. dereferencing pointer to incomplete type A dereferenced pointer must be a pointer to an incomplete type. division by zero in #if Division by zero is not computable. © 2008 Microchip Technology Inc. DS51284H-page 167
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MPLAB ® C COMPILER FOR PIC24 MCUs
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Table of Contents A.5 Identifiers .
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INTRODUCTION MPLAB ® C COMPILER FO
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CONVENTIONS USED IN THIS GUIDE The
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THE MICROCHIP WEB SITE Preface C Re
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1.1 INTRODUCTION 1.2 HIGHLIGHTS MPL
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1.5 COMPILER FEATURE SET Compiler O
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Differences Between 16-Bit Device C
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Using the Compiler on the Command L
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3.6 ENVIRONMENT VARIABLES Using the
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4.1 INTRODUCTION 4.2 HIGHLIGHTS 4.3
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4.5 MEMORY SPACES Run Time Environm
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Run Time Environment 1. It is possi
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4.8 SOFTWARE STACK Run Time Environ
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FIGURE 4-2: CALL OR RCALL Stack gro
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4.11 FUNCTION CALL CONVENTIONS Run
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Run Time Environment The compiler a
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4.14.2 String Literals as Arguments
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6.1 INTRODUCTION MPLAB ® C COMPILE
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6.3 PMP POINTERS Additional C Point
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6.4 EXTERNAL POINTERS 6.3.3 Define
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ead_external16 Additional C Pointer
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Additional C Pointer Types } else {
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7.5 USING SFRS Device Support Files
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7.6 USING MACROS Device Support Fil
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EXAMPLE 7-2: EEDATA ACCESS VIA PSV
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Interrupts When using the interrupt
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8.4.1 dsPIC30F DSCs (Non-SMPS) Inte
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8.4.3 PIC24F MCUs Interrupt Vectors
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Interrupts TABLE 8-3: INTERRUPT VEC
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Interrupts TABLE 8-4: INTERRUPT VEC
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85 _Interrupt85 _AltInterrupt85 Res
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8.8 ENABLING/DISABLING INTERRUPTS I
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Page 127 and 128: Mixing Assembly Language and C Modu
Page 137 and 138: A.5 IDENTIFIERS A.6 CHARACTERS Impl
Page 139 and 140: Implementation-Defined Behavior The
Page 141 and 142: A.15 PREPROCESSING DIRECTIVES Imple
Page 143 and 144: A.17 SIGNALS A.18 STREAMS AND FILES
Page 145 and 146: A.24 GETENV A.25 SYSTEM A.26 STRERR
Page 147 and 148: B.1 INTRODUCTION MPLAB ® C COMPILE
Page 149 and 150: __builtin_btg Built-in Functions De
Page 151 and 152: __builtin_clr_prefetch Argument: xp
Page 153 and 154: __builtin_dmaoffset Built-in Functi
Page 155 and 156: __builtin_fbcl Built-in Functions A
Page 157 and 158: __builtin_modsd Argument: dividend
Page 159 and 160: __builtin_mpy Error Messages An err
Page 161 and 162: __builtin_mulss Built-in Functions
Page 163 and 164: __builtin_psvoffset Built-in Functi
Page 165 and 166: __builtin_subab Built-in Functions
Page 167 and 168: __builtin_tblwth Built-in Functions
Page 169 and 170: C.1 INTRODUCTION C.2 ERRORS MPLAB
Page 171: Diagnostics ambiguous abbreviation
Page 175 and 176: F Diagnostics ‘identifier’ fail
Page 177 and 178: Diagnostics initializer for static
Page 179 and 180: Diagnostics invalid use of undefine
Page 181 and 182: N Diagnostics negative width in bit
Page 183 and 184: R Diagnostics redeclaration of ‘i
Page 185 and 186: Diagnostics symbol ‘symbol’ not
Page 187 and 188: Diagnostics void expression between
Page 189 and 190: Diagnostics anonymous union declare
Page 191 and 192: Diagnostics comparison between sign
Page 193 and 194: duplicate ‘const’ The ‘const
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Page 199 and 200: Diagnostics library function ‘ide
Page 201 and 202: P Diagnostics parameter has incompl
Page 203 and 204: Diagnostics shift count >= width of
Page 205 and 206: Diagnostics too many arguments for
Page 207 and 208: V Diagnostics __VA_ARGS__ can only
Page 211 and 212: MPLAB C Compiler for PIC18 MCUs vs.
Page 217 and 218: E.1 INTRODUCTION E.2 HIGHLIGHTS MPL
Page 221 and 222: G.1 PREAMBLE MPLAB ® C COMPILER FO
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G.3 VERBATIM COPYING G.4 COPYING IN
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GNU Free Documentation License incl
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Glossary File Registers On-chip dat
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Glossary Machine Language A set of
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Glossary Stack, Software Memory use
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Symbols __builtin_add..............
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-fpack-struct .....................
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-idirafter.........................
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Peephole Optimization..............
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-Wsequence-point...................
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MPLAB C Compiler for PIC24 MCUs and dsPIC DSCs ... - Microchip

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