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

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16-Bit C Compiler User’s Guide D.15 Calling Conventions ................................................................................. 207 D.16 Startup Code ............................................................................................ 207 D.17 Compiler-Managed Resources ................................................................ 207 D.18 Optimizations ........................................................................................... 208 D.19 Object Module Format ............................................................................. 208 D.20 Implementation-Defined Behavior ........................................................... 208 D.21 Bit fields ................................................................................................... 209 Appendix E. Deprecated Features E.1 Introduction ................................................................................................ 211 E.2 Highlights ................................................................................................... 211 E.3 Predefined Constants ................................................................................ 211 Appendix F. ASCII Character Set .............................................................................213 Appendix G. GNU Free Documentation License G.1 Preamble ................................................................................................... 215 G.2 Applicability and Definitions ....................................................................... 215 G.3 Verbatim Copying ...................................................................................... 217 G.4 Copying in Quantity ................................................................................... 217 G.5 Modifications .............................................................................................. 217 G.6 Combining Documents .............................................................................. 219 G.7 Collections of Documents .......................................................................... 219 G.8 Aggregation with Independent Works ........................................................ 219 G.9 Translation ................................................................................................. 220 G.10 Termination .............................................................................................. 220 G.11 Future Revisions of this License .............................................................. 220 Glossary .....................................................................................................................221 Index ...........................................................................................................................229 Worldwide Sales and Service ...................................................................................238 DS51284H-page vi © 2008 Microchip Technology Inc.
INTRODUCTION MPLAB ® C COMPILER FOR PIC24 MCUs AND dsPIC ® DSCs USER’S GUIDE Preface NOTICE TO CUSTOMERS All documentation becomes dated, and this manual is no exception. Microchip tools and documentation are constantly evolving to meet customer needs, so some actual dialogs and/or tool descriptions may differ from those in this document. Please refer to our web site (www.microchip.com) to obtain the latest documentation available. Documents are identified with a “DS” number. This number is located on the bottom of each page, in front of the page number. The numbering convention for the DS number is “DSXXXXXA”, where “XXXXX” is the document number and “A” is the revision level of the document. For the most up-to-date information on development tools, see the MPLAB ® IDE on-line help. Select the Help menu, and then Topics to open a list of available on-line help files. This chapter contains general information that will be useful to know before using the MPLAB C Compiler for PIC24 MCUs and dsPIC DSCs. Items discussed include: • Document Layout • Conventions Used in this Guide • Recommended Reading • The Microchip Web Site • Development Systems Customer Change Notification Service • Customer Support © 2008 Microchip Technology Inc. DS51284H-page 1
Page 1 and 2: MPLAB ® C COMPILER FOR PIC24 MCUs
Page 5: Table of Contents A.5 Identifiers .
Page 9 and 10: CONVENTIONS USED IN THIS GUIDE The
Page 11 and 12: THE MICROCHIP WEB SITE Preface C Re
Page 13 and 14: 1.1 INTRODUCTION 1.2 HIGHLIGHTS MPL
Page 15 and 16: 1.5 COMPILER FEATURE SET Compiler O
Page 19 and 20: Differences Between 16-Bit Device C
Page 41 and 42: Using the Compiler on the Command L
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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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5.1 INTRODUCTION 5.2 HIGHLIGHTS MPL
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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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Interrupts 2. Unsafe: read bar inte
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LATGbits.LATG2 = 0; /* No problem l
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MPLAB ® C COMPILER FOR PIC24 MCUs
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Mixing Assembly Language and C Modu
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A.5 IDENTIFIERS A.6 CHARACTERS Impl
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Implementation-Defined Behavior The
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A.15 PREPROCESSING DIRECTIVES Imple
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A.17 SIGNALS A.18 STREAMS AND FILES
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A.24 GETENV A.25 SYSTEM A.26 STRERR
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B.1 INTRODUCTION MPLAB ® C COMPILE
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__builtin_btg Built-in Functions De
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__builtin_clr_prefetch Argument: xp
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__builtin_dmaoffset Built-in Functi
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__builtin_fbcl Built-in Functions A
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__builtin_modsd Argument: dividend
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__builtin_mpy Error Messages An err
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__builtin_mulss Built-in Functions
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__builtin_psvoffset Built-in Functi
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__builtin_subab Built-in Functions
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__builtin_tblwth Built-in Functions
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C.1 INTRODUCTION C.2 ERRORS MPLAB
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Diagnostics ambiguous abbreviation
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Diagnostics cast specifies function
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F Diagnostics ‘identifier’ fail
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Diagnostics initializer for static
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Diagnostics invalid use of undefine
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N Diagnostics negative width in bit
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R Diagnostics redeclaration of ‘i
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Diagnostics symbol ‘symbol’ not
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Diagnostics void expression between
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Diagnostics anonymous union declare
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Diagnostics comparison between sign
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duplicate ‘const’ The ‘const
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Diagnostics function might be possi
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Diagnostics ‘identifier’ is nar
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Diagnostics library function ‘ide
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P Diagnostics parameter has incompl
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Diagnostics shift count >= width of
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Diagnostics too many arguments for
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V Diagnostics __VA_ARGS__ can only
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MPLAB C Compiler for PIC18 MCUs vs.
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E.1 INTRODUCTION E.2 HIGHLIGHTS MPL
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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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