Audio Output with the STM32F411 Microcontroller

I obtained an STM32F411 development board recently. Among other peripherals, it has a Cirrus CS43L22 audio DAC on the board and a typical 1/8" adapter allowing you to plug in headphones or typical PC speakers as shown below.

STM32F411 Connected to Speakers

Searching the web, I found a couple of code examples using audio with the…

Date: October 18th, 2017 at 7:04pm
Author: Terence Darwen
Tags: Embedded, STM32, STM32F4, ARM-Cortex-M4, CS43L22, Audio

My PhaseVocoder on GitHub

My PhaseVocoder project is now available on GitHub here. In addition to placing the project on GitHub I've also added some general documentation on how the phase vocoding process works. Please see this PDF for more information.

PhaseVocoder on GitHub

The PhaseVocoder uses CMake to build on various platforms. I've pers…

Date: September 15th, 2017 at 7:06pm
Author: Terence Darwen
Tags: Audio Software, Cross-Platform Development, Phase Vocoder, Transient Detection, Digital Signal Processing, DSP, C++

Presenting at St. Louis C++ Meetup on August 9th

I'll be presenting some of my experiences using C++ for embedded development, specifically my ARM Cortex-M4F Synthesizer project, at the St. Louis C++ Meetup next month (August 2017). The meeting is free and open to the public. Please RSVP on the Meetup site here.

St. Louis C++ Meetup

My ARM Cortex-M4F Synthesizer (s…

Date: July 24th, 2017 at 10:10am
Author: Terence Darwen
Tags: C++, C++ Meetup, Embedded, Tiva LaunchPad, TM4C123G, ARM-Cortex-M4, Synthesizer, Synth

My ARM Cortex-M4F Synthesizer (Video Included)

Here's the current status of my ARM Cortex-M4F Synthesizer. Using a Tiva LaunchPad (ARM Cortex-M4F) development board and some various circuitry for MIDI input and audio output I've created a fully functioning synthesizer as shown in the video demonstration below.

The code is written in C…
Date: July 9th, 2017 at 4:59pm
Author: Terence Darwen
Tags: Embedded, Tiva LaunchPad, TM4C123G, ARM-Cortex-M4, Synthesizer, Synth, Sabbatical

Tiva LaunchPad (ARM Cortex-M4) LCD Menu System - Video Included

I've interfaced my Tiva LaunchPad (ARM Cortex-M4) development board with a small LCD screen as shown in the video below. The LCD screen is a Newhaven display, model number NHD-0420H1Z-FL-GBW-33V3.

Below is a circuit diagram I've drawn to show how everything is setup. It's fairly simple as…

Date: June 18th, 2017 at 8:12pm
Author: Terence Darwen
Tags: Embedded, Tiva LaunchPad, TM4C123G, ARM-Cortex-M4, LCD, Menu System, Sabbatical