In Depth Analysis of an ARM Cortex-M4 Program

I’ve been working with ARM Cortex-M4 microprocessors for a little over a year and a half now. Despite reading popular embedded books and blogs, I have yet to come across an end-to-end overview of the creation and execution of a program.

STM32F4 Chip

For my own education and reference I’ve created such a docume…

Date: January 24th, 2018 at 5:40pm
Author: Terence Darwen
Tags: Embedded, ARM-Cortex-M4, STM32, STM32F4

Cross-Platform Audio Analysis Tool

I've been working on an audio analysis tool, lately. Here's a screenshot:

AAT Screenshot on MacOS

One of my interests involves creating software algorithms that manipulate audio in various ways. This frequently involves analyzing various numerical data.

Tired with writing specialized scripts corralling specific data and…

Date: December 14th, 2017 at 2:47pm
Author: Terence Darwen
Tags: Audio Analysis Tool, Audio Software, Cross-Platform Development, C++ Development

STM32 Gyroscope / Accelerometer Demo (Video Included)

A number of the STM32 development boards come equipped with a MEMS gyroscope and accelerometer. As shown in the video below, I've written software which displays values from both of these devices in realtime.


In my example, I'm using an STM32F411 development board. As shown on the databri

Date: December 3rd, 2017 at 6:37pm
Author: Terence Darwen
Tags: Embedded, STM32, STM32F4, ARM-Cortex-M4, STM32F411, Gyroscope, Accelerometer

Various STM32 Projects

I've been working on a number of smaller STM32 projects to get to know the processsor and peripherals better. These include UART communication, DMA, configuring various interrupts, clock speeds and more.

STM32F411 Discovery Board

These projects can be found in my GitHub repo. They're well commented to explain what the c…

Date: November 17th, 2017 at 6:53pm
Author: Terence Darwen
Tags: Embedded, STM32, STM32F4, ARM-Cortex-M4, STM32F411

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