The Definitive Guide to ARM® Cortex®-M3 and Cortex®-M4 Processors, 3rd Edition

Chapter 21

ARM^® Cortex^®-M4 and DSP Applications

Abstract

This chapter covers the DSP capability of the ARM^® Cortex^®-M3 and Cortex-M4 processors, and how this compares to traditional DSPs. It also covers the data type representations and the DSP instructions on the Cortex-M4 processor, and how to implement DSP operations.

Keywords

DSP; Dot product; data type; SIMD; fractional; filter; transform; arithmetic; Biquad; FFT

Chapter Outline

21.1 DSP on a microcontroller?

21.2 Dot product example

21.3 Architecture of a traditional DSP processor

21.4 Cortex^®-M4 DSP instructions

21.4.1 Registers and data types

21.4.2 Fractional arithmetic

21.4.3 SIMD data

21.4.4 Load and store instructions

21.4.5 Arithmetic instructions

32-bit integer instructions

16-bit ...