Microchip PIC32AK1216GC41064 handleiding
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DSP Library for PIC32A MCU
User Guide
© 2025 Microchip Technology Inc. and its subsidiaries
DS70005605A - 3
1. DSP Library for PIC32A MCU
1.1. C Code Applicaons
The DSP library for PIC32A devices is included with the XC32 compiler. Within the compiler install
directory, the library and its related les can be found at:
• pic32a\lib\libdsp-elf.a – DSP library/archive le
• pic32a\src\libdsp.zip – zipped source code for library functions, including a batch le to rebuild the
library
• pic32a\support\generic\h\dsp.h – header le for DSP library
1.2. Using the DSP Library
Read the following document sections before using the DSP library in specic user or conventional
applications.
• Building with the DSP Library
• Memory Models
• DSP Library Function Calling Convention
• Data Types
• Data Memory Usage
• CORCON Register Usage
• Overow and Saturation Handling
• Integrating with Interrupts and an RTOS
• Rebuilding the DSP Library
• DSP Library Functions
1.2.1. Building with the DSP Library
Building an application which utilizes the DSP Library requires only two les:
dsp.h
and
libdsp-elf.a
.
dsp.h is a header le which provides all the function prototypes, #denes and typedefs used by the
library. libdsp-elf.a is the archived library le which contains all the individual object les for each
library function. (See the “MPLAB
®
XC32 Libraries Reference Manual for PIC32A MCU”, DS50003838, for
more on ELF-specic libraries.)
When compiling an application,
dsp.h
must be referenced (using #include) by all source les which
call a function in the DSP Library or use its symbols or typedefs. When linking an application,
libdsp-elf.a
must be provided as an input to the linker (using the
--library dsp
or
-ldsp
linker
switch), so the functions used by the application be linked to the project.
The linker will place the functions of the DSP library into a special text section named .libdsp. This
can be seen in the map le generated by the linker.
1.2.2. Memory Models
The DSP Library is built using the small code and small data memory models to minimize the
library footprint. Some functions within the DSP library are written in C and utilize the compiler’s
oating-point library. Consequently, the compiler linker script les position the .libm and .libdsp
text sections adjacent to each other. This ensures that the DSP library can safely call the RCALL
instruction to invoke the necessary oating-point routines from the oating-point library.
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Productinformatie
| Merk | Microchip |
| Model | PIC32AK1216GC41064 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 11302 MB |
