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User Guide

DS70005605A - 1

Introducon

This document outlines the DSP library for PIC32A MCU devices, which oers a suite of pre-optimized software

routines tailored to streamline digital signal processing tasks. This library delivers ecient implementations

of intricate mathematical functions and algorithms, empowering developers to boost the performance and

capabilities of PIC32A MCU devices in applications, such as advanced sensing and control, power conversion,

audio processing, telecommunications and motor control. The DSP Library currently supports a total of 52

functions.

DSP Library User Guide for PIC32A Microcontrollers

User Guide

DS70005605A - 2

Table of Contents

Introduction...........................................................................................................................................................................1

1. DSP Library for PIC32A MCU........................................................................................................................................3

1.1. C Code Applications...........................................................................................................................................3

1.2. Using the DSP Library........................................................................................................................................3

2. Vector Functions............................................................................................................................................................7

2.1. Fractional Vector Operations............................................................................................................................7

2.2. Additional Remarks............................................................................................................................................8

2.3. Functions.............................................................................................................................................................8

3. Window Functions.......................................................................................................................................................20

3.1. Window Operations.........................................................................................................................................20

3.2. User Considerations........................................................................................................................................ 20

3.3. Functions...........................................................................................................................................................20

4. Matrix Functions..........................................................................................................................................................24

4.1. Fractional Matrix Operations......................................................................................................................... 24

4.2. User Considerations........................................................................................................................................ 25

4.3. Additional Remarks......................................................................................................................................... 25

4.4. Functions...........................................................................................................................................................25

5. Filtering Functions.......................................................................................................................................................31

5.1. Fractional Filter Operations............................................................................................................................ 31

5.2. FIR and IIR Filter Implementations.................................................................................................................32

5.3. Single Sample Filtering.................................................................................................................................... 32

5.4. User Considerations........................................................................................................................................ 32

5.5. Functions...........................................................................................................................................................33

6. Transform Functions...................................................................................................................................................51

6.1. Fractional Transform Operations.................................................................................................................. 51

6.2. Fractional Complex Vectors ...........................................................................................................................52

6.3. User Considerations........................................................................................................................................ 52

6.4. Functions...........................................................................................................................................................52

7. Control Functions........................................................................................................................................................ 69

7.1. Proportional Integral Derivative (PID) Control............................................................................................. 69

7.2. Functions...........................................................................................................................................................71

8. Conversion Functions................................................................................................................................................. 74

8.1. Fract2Float........................................................................................................................................................ 74

8.2. Float2Fract........................................................................................................................................................ 74

Microchip Information....................................................................................................................................................... 76

Trademarks.................................................................................................................................................................. 76

Legal Notice..................................................................................................................................................................76

Microchip Devices Code Protection Feature............................................................................................................76