Overview

Description

Topics

Newly uploaded the application note "RX Family Sample Program Using FIR Filter to Perform Frequency Band Judgement".

Using the DSP library, Digital Signal Processing such as FIR, IIR filters and FFT can be performed easily on RX Family MCUs. RX Family MCUs support DSP instructions that execute Multiply-and-accumulate operation etc. necessary for Digital Signal Processing at high speed.

Components

  • DSP library
  • User's Manual (Explain detail API)
  • Application Notes (Describe how to install the library, resource requirements and execution cycle counts)
  • Sample Programs (Projects run on IDE)

Features

Release Information

Target Devices

Documentation

Title Type Date
PDF923 KB日本語
Related Files:
Application Note
PDF114 KB日本語
Tool News - Release

Design & Development

Sample Code

Sample Code

Title Type Date
ZIP20.53 MB日本語
Related Files:
Compiler: CC-RX
IDE: e2 studio
Sample Code

Videos & Training

FFT Demo Using RX Family DSP Library

Directly input analog signal to RX231 and perform FFT in real time.

Additional Details

Rich Data Type Support

Complex FFT case:
int32_t R_DSP_FFT_<intype> <outtype>(r_dsp_fft_t * handle, .. ), where <intype> and <outtype> are the following combinations.
<intype> <outtype>
ci16 ci16 or ci32
ci32 ci32
cf32 cf32

ci16: complex data type of integer 16-bit data | ci32: complex data type of integer 32-bit data

Fine-grained Option Support

Complex FFT R_DSP_FFT_ci16ci16 case:
  • scaling: division by 2 at the output of every stage of the FFT, or every other stage, or no scaling
  • coefficients: 16-bit or 32-bit

Functions

RX Family DSP Library APIs

Image
dsplibrary-api

Applications

Image
dsplibrary-applications

Related Application Notes / Sample Code

RX Family RXv2 CPU Products An example of C-language program to use DSP instructions Rev.1.00 - Sample Code (ZIP | English, 日本語)
RX Family RXv2 CPU Products An example of C-language program to use DSP instructions Rev.1.00 (PDF | English, 日本語)
Sample program with DSP instructions defined as assembly-language inline functions to allow their use in programs written in C.
RX Family Sample Program for Performing FFT on Analog Input Signals Rev.1.10 - Sample Code (ZIP | English, 日本語)
RX Family Sample Program for Performing FFT on Analog Input Signals Rev.1.10 (PDF | English, 日本語)
Sample project for performing A/D conversion and FFT processing on analog input signals using a single RX MCU. Working on Renesas Starter Kit for RX231.
RX Family Demonstration of Digital Signal Analysis and Judgement Using FFT Rev.1.60 (ZIP | English, 日本語)
RX Family Demonstration of Digital Signal Analysis and Judgement Using FFT Rev.1.60 (PDF | English, 日本語)
Sample project for performing A/D conversion, FFT, IIR Filter and HMI processing using a single RX MCU. Working on Renesas Starter Kit for RX231 or Target Board for RX231. Refer to the demonstration video "FFT Demo using RX Family DSP Library" using this sample project.
RX Family Sample Program Using FIR Filter to Perform Frequency Band Judgement Rev.1.01 (PDF | English, 日本語)
RX Family Sample Program Using FIR Filter to Perform Frequency Band Judgement Rev.1.01 (ZIP)
A sample project of FIR filter. Using three FIR filters, it determines the frequency band (low/middle/high) of signals input to a RX microcontroller by A/D conversion.Working on Target Board for RX140.